CN107220768A - A kind of construction land Space Expanding method and system - Google Patents
A kind of construction land Space Expanding method and system Download PDFInfo
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Abstract
The present invention discloses a kind of construction land Space Expanding method and system.Methods described includes：Multifactor evaluation is carried out to target area according to different types of evaluation points, prolongable first land area is obtained；When first land area is less than demand land area, repetition adjusts one or more evaluation points, multifactor evaluate is carried out to target area according to the evaluation points after adjustment, obtain prolongable second land area, when the second land area is more than the demand land area, calculating is overlapped to the first land area and the second land area, prolongable soil position and area is obtained.Method and system of the present invention, can be according to construction land demand, counter to release the soil position that used as construction land and area, so that available construction land is not limited only to existing usable land, expand construction land expands scope.
Description
Technical field
It is more particularly to a kind of the present invention relates to construction land suitability evaluation and construction land Space Expanding technical field
Construction land Space Expanding method and system.
Background technology
Construction land suitability evaluation is an important basic work in overall city planning, it may be determined that research
The maximum quantity delivered and distribution situation of regional construction land used, instruct land use planning, land-use structure adjustment, determine soil most
Suitability, scientific basis is provided for science adjustment land-use structure.For treasuring and rationally being increased using soil, solution construction land
Plus play an important roll with the contradiction such as cultivated land area, the ecological balance.Domestic and foreign scholars have carried out largely grinding from different perspectives to this
Study carefully, foreign countries more pay close attention to the selection of certain land used, i.e., based on certain specific land suitability evaluation built purposes and carried out, China
It is that preliminary judgement is made in whether being built to land used for carrying out for all construction activities that construction land suitability evaluation is then mostly, no
Consider specific construction purposes.
For a long time, most of method of construction land suitability evaluation is all to analyze soil conduct from single index
The suitability of construction land, such as based on appraisal of land suitability, or with ecological security assessment or with Land Capability Evaluation
Based on, without analyzing its suitability from many aspects, so the practicality of analysis result will be caused poor.And current institute
Have method be all from front analytical derivation go out land suitability, ecological safety in terms of restrictive condition so that analyzing soil is
The no construction land that is suitable as is used, and can only must thus have the suitability in soil.But, for existing usable land base
Originally it is finished, the area in soil built is not can be used to substantially, these methods can not solves how to find usable land at all
Problem.Such as current China much industrializes the area or the less area of land area itself of high development, such as eight mountains one
The Fujian Province in one point of field of water, construction land seldom, can not have been found available with conventional construction land suitability evaluation methods
Construction land.Therefore, for the not enough place of these construction land areas, available construction land how is found, as needing badly
The a great problem of solution.
The content of the invention
It is an object of the invention to provide a kind of construction land Space Expanding method and system, according to the demand of construction land,
On the basis of a variety of restriction factors such as land suitability, ecological and geological disaster are considered, fitted by changing construction land
The restrictive condition of suitable property evaluation finds the soil as construction land, and these soils are carried out into a certain degree of transformation, just may be used
It is supplied to construction to use.This method can help those existing soils to meet the area of construction land demand, expand it
The space of construction land.
To achieve the above object, the invention provides following scheme：
A kind of construction land Space Expanding method, methods described includes：
Multifactor evaluation is carried out to target area according to different types of evaluation points, the first construction land space is obtained and opens up
Open up map of Complex evaluation；
Prolongable first land area is calculated according to the first construction land Space Expanding map of Complex evaluation；
Judge whether first land area is less than demand land area, obtain the first judged result；
When first judged result is to be, one or more evaluation points are adjusted, according to after adjustment
Evaluation points carry out multifactor evaluation to target area, obtain the second construction land Space Expanding map of Complex evaluation；
Prolongable second land area is calculated according to the second construction land Space Expanding map of Complex evaluation；
Judge whether second land area is less than the demand land area, obtain the second judged result；
When second judged result when being, to return to the one or more evaluation points of adjustment, according to adjustment
The evaluation points afterwards carry out multifactor evaluation to target area, obtain the second construction land Space Expanding map of Complex evaluation
Step；
When second judged result for it is no when, to the second construction land Space Expanding map of Complex evaluation and described the
One construction land Space Expanding map of Complex evaluation is overlapped calculating, obtains prolongable soil position and area.
Optionally, it is described that multifactor evaluation is carried out to target area according to different types of evaluation points, obtain first and build
If land used Space Expanding map of Complex evaluation, is specifically included：
The digital raster image that the papery map data of the target area is scanned into is obtained, using ArcGIS platforms to institute
State digital raster image and carry out space geometry accuracy registration and correction, then will to each geography in the digital raster image
Element carries out vector quantization, sets up the vector database of target area；
By 1:Contour point figure layer in 10000 target area Digital Topographic Map ', which is imported into ArcGIS platforms, generates number
Word elevation model；
Use gridding method to be divided the target area with 15m × 15m grid cell on ArcGIS platforms, obtain
Obtain single evaluation points and evaluate figure layer；Wherein, each cell of acquisition is an evaluation unit, each evaluation points pair
Answer a figure layer in ArcGIS platforms；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, using difference
The evaluation points of type carry out the multifactor multiple suitability evaluations point evaluated, obtain each evaluation points to target area
Value；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, using level
Analytic approach calculates and obtains the corresponding multiple weights of each evaluation points；
According to the multiple suitability evaluation score value and the multiple weight, calculating obtains the first construction land Space Expanding
Map of Complex evaluation.
Optionally, it is described according to the vector database, the digital elevation model and single evaluation points evaluation figure
Layer, multifactor evaluation is carried out to target area using different types of evaluation points, obtains the multiple suitable of each evaluation points
Suitable property evaluates score value, specifically includes：
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, to the mesh
Mark region and carry out Evaluation for Suitability of Land Resources, obtain Evaluation for Suitability of Land Resources score value；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, to the mesh
Mark region and carry out land ecosystem services and ecological security assessment, obtain land ecosystem services and ecological security assessment point
Value；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, to the mesh
Mark region and carry out land use calamity source assessment, obtain land use calamity source point value of evaluation.
Optionally, figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, it is right
The target area carries out Evaluation for Suitability of Land Resources, obtains Evaluation for Suitability of Land Resources score value, specifically includes：
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, using the limit
General evaluation method calculates the Evaluation for Suitability of Land Resources score value of the target area；
The calculation formula of the general evaluation method of the limit is as follows：
Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent the evaluation unit
The quantization score value of i general factor, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent described to evaluate
The quantization score value of j-th of limiting factor of unit, n represents the number of the general factor, and m represents the number of the limiting factor.
Optionally, described according to the multiple suitability evaluation score value and the multiple weight, calculating obtains the first construction
Land used Space Expanding map of Complex evaluation, is specifically included：
Using multifactor overlay analysis method, the multiple suitability evaluation score value and the multiple weight are overlapped,
Obtain the first construction land Space Expanding map of Complex evaluation；
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
Wherein, S represents the first construction land Space Expanding overall merit score value, UiRepresent evaluation points described in i-th
Weight, XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points
The invention also discloses a kind of construction land Space Expanding system, the system includes：
First construction land Space Expanding map of Complex evaluation acquisition module, for according to different types of evaluation points to mesh
Mark region and carry out multifactor evaluation, obtain the first construction land Space Expanding map of Complex evaluation；
First land area acquisition module, can for being calculated according to the first construction land Space Expanding map of Complex evaluation
The first land area expanded；
First judged result acquisition module, for judging whether first land area is less than demand land area, is obtained
To the first judged result；
Second construction land Space Expanding map of Complex evaluation acquisition module, during for being when first judged result,
One or more evaluation points are adjusted, multifactor evaluation is carried out to target area according to the evaluation points after adjustment,
Obtain the second construction land Space Expanding map of Complex evaluation；
Second land area acquisition module, can for being calculated according to the second construction land Space Expanding map of Complex evaluation
The second land area expanded；
Second judged result acquisition module, for judging whether second land area is less than the demand ground
Product, obtains the second judged result；
Adjusting module is returned, during for being when second judged result, the second construction land space is returned to and opening up
Map of Complex evaluation acquisition module is opened up, the one or more evaluation points of adjustment are performed, according to the evaluation after adjustment
Factor pair target area carries out multifactor evaluation, the step of obtaining the second construction land Space Expanding map of Complex evaluation；
Prolongable soil position and area acquisition module, for when second judged result for it is no when, to described the
Two construction land Space Expanding map of Complex evaluation are overlapped calculating with the first construction land Space Expanding map of Complex evaluation,
Obtain prolongable soil position and area.
Optionally, the first construction land Space Expanding map of Complex evaluation acquisition module is specifically included：
Vector database setting up submodule, for obtaining the digital grid that the papery map data of the target area is scanned into
Table images, carry out space geometry accuracy registration and correction, then to described using ArcGIS platforms to the digital raster image
Each geographic element in digital raster image carries out vector quantization, sets up the vector database of target area；
Digital elevation model setting up submodule, for by 1:Contour point in 10000 target area Digital Topographic Map '
Figure layer imported into ArcGIS platforms and generates digital elevation model；
Single evaluation points evaluate figure layer setting up submodule, for using gridding method on ArcGIS platforms by the target
Domain is divided with 15m × 15m grid cell, is obtained single evaluation points and is evaluated figure layer；Wherein, each cell of acquisition
For an evaluation unit, a figure layer in each evaluation points corresponding A rcGIS platforms；
Suitability evaluation score value acquisition submodule, for according to the vector database, the digital elevation model and institute
State single evaluation points and evaluate figure layer, multifactor evaluation is carried out to target area using different types of evaluation points, each institute is obtained
State multiple suitability evaluation score values of evaluation points；
Weight Acquisition submodule, for according to the vector database, the digital elevation model and it is described it is single evaluate because
Son evaluates figure layer, is calculated using analytic hierarchy process (AHP) and obtains the corresponding multiple weights of each evaluation points；
First construction land Space Expanding map of Complex evaluation acquisition submodule, for according to the multiple suitability evaluation point
Value and the multiple weight, calculating obtain the first construction land Space Expanding map of Complex evaluation.
Optionally, the suitability evaluation score value acquisition submodule is specifically included：
Evaluation for Suitability of Land Resources score value acquiring unit, for according to the vector database, the digital elevation mould
Type and single evaluation points evaluate figure layer, carry out Evaluation for Suitability of Land Resources to the target area, obtain land resource
Suitability evaluation score value；
Land ecosystem services and ecological security assessment score value acquiring unit, for according to the vector database, institute
State digital elevation model and single evaluation points evaluate figure layer, land ecosystem services and life are carried out to the target area
State safety evaluation, obtains land ecosystem services and ecological security assessment score value；
Land use calamity source point value of evaluation acquiring unit, for according to the vector database, the digital elevation
Model and single evaluation points evaluate figure layer, carry out land use calamity source assessment to the target area, obtain soil
Utilize calamity source point value of evaluation.
Optionally, the Evaluation for Suitability of Land Resources score value acquiring unit, is specifically included：
Evaluation for Suitability of Land Resources score value obtains subelement, for according to the vector database, the digital elevation
Model and single evaluation points evaluate figure layer, and the land resource of the target area is calculated using the general evaluation method of the limit
Suitability evaluation score value；
The calculation formula of the general evaluation method of the limit is as follows：
Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent the evaluation unit
The quantization score value of i general factor, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent described to evaluate
The quantization score value of j-th of limiting factor of unit, n represents the number of the general factor, and m represents the number of the limiting factor.
Optionally, the first construction land Space Expanding map of Complex evaluation acquisition submodule, is specifically included：
First construction land Space Expanding map of Complex evaluation acquiring unit, for using multifactor overlay analysis method, by institute
State multiple suitability evaluation score values and the multiple weight is overlapped, obtain the first construction land Space Expanding synthesis and comment
Valency figure；
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
Wherein, S represents the first construction land Space Expanding overall merit score value, UiRepresent evaluation points described in i-th
Weight, XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points.
The specific embodiment provided according to the present invention, the invention discloses following technique effect：
1st, according to the demand of construction land, considering land suitability, a variety of limitations such as ecological and geological disaster because
On the basis of son, the soil as construction land is found by changing the restrictive condition of construction land suitability evaluation, can
Help those existing soils to meet the area of construction land demand, expand the space of its construction land.
2nd, it is many-sided from land resource suitability, land ecosystem services and ecological safety and land use calamity source
Target area is evaluated, can obtain more fully, accurate analysis result, changing construction land suitability evaluation
During restrictive condition, one or more restriction factors are adjusted according to local actual conditions, practicality is stronger.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of method flow diagram of construction land Space Expanding method of the embodiment of the present invention；
Fig. 2 is a kind of system construction drawing of construction land Space Expanding system of the embodiment of the present invention；
Fig. 3 is construction land Space Expanding System of Comprehensive Evaluation schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
It is an object of the invention to provide a kind of construction land Space Expanding method and system.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Construction land suitability evaluation is an important basic work in overall city planning, it may be determined that target
The maximum quantity delivered and distribution situation of regional construction land used.According to the difference that interaction property is expanded to construction land, herein by shadow
The factor for ringing construction land suitability evaluation is divided into three major types：Evaluation for Suitability of Land Resources, Ecosystem Service are pacified with ecological
It is complete to evaluate and land use Hazard Risk Assessment.
Evaluation points analysis based on Evaluation for Suitability of Land Resources, proposes key area and space that construction land is expanded
Distributed data, is that construction land Space Expanding overall merit and the former integration planning of mountain and sea provide scientific basis.
Land ecology function services and ecological security assessment method, screening construction land Space Expanding Land ecological is about
Beam area, is that construction land Space Expanding overall merit and the former integration planning of mountain and sea provide ecological safety decision-making foundation.
Land use Hazard Risk Analysis, screening construction land Space Expanding land use calamity source area, is used to build
Ground Space Expanding overall merit and the former integration planning of mountain and sea provide land use calamity source decision-making foundation.
The present invention chooses various types of evaluation points composition construction land space on the basis of three class factors and opened up
System of Comprehensive Evaluation is opened up, the construction land Space Expanding System of Comprehensive Evaluation is as shown in Figure 3.Comprehensive construction land used
The suitability evaluation factor, land ecology function services and the ecological security assessment factor, the land use Hazard Risk Assessment factor etc.
Constraints, sets up construction land Space Expanding comprehensive evaluation index and model, target area is evaluated.
A kind of evaluation procedure of construction land Space Expanding method of the present invention is divided into two stages：
First stage：The routine evaluations stage, including：
1) assay.Utilize conventional appraisal of land suitability, land ecosystem services and ecological security assessment, soil
Ground is evaluated target area using calamity source appraisal procedure and integrated evaluating method, is obtained the first construction land space and is opened up
Open up map of Complex evaluation；
2) Calculation Estimation result.Collect statistics suitably build area, conveniently build area and general suitably construction area's area；
3) assay result.If collect statistics area is more than or equal to construction land demand area, terminates this and comment
Valency, if collect statistics area is less than construction land demand area, into second stage.
Second stage：The evaluation phase constrained based on evaluation points, including：
4) restrictive condition is evaluated in adjustment.Analytic routines appraisal of land suitability, land ecosystem services and ecological safety
The result that evaluation, land use calamity source are assessed, finds out its restrictive condition (limitation evaluation points), changes these limitation bars
Part；
5) appraisal of land suitability, land ecosystem services are used again according to the evaluation points changed after restrictive condition
Target area is evaluated with ecological security assessment, land use calamity source appraisal procedure and integrated evaluating method, obtained
Second construction land Space Expanding map of Complex evaluation；
6) assay result.If collect statistics area is less than construction land demand area, it is back to 4).If converged
Total statistics area is more than or equal to construction land demand area, then into 7)；
7) soil that need to be transformed is obtained.The first construction land Space Expanding map of Complex evaluation is built with described second
Land used Space Expanding map of Complex evaluation is overlapped analysis, obtains the soil position for needing to transform and area.
A kind of construction land Space Expanding method provided referring specifically to Fig. 1, the present invention, methods described includes：
Step 101：Multifactor evaluation is carried out to target area according to different types of evaluation points, the first construction use is obtained
Ground Space Expanding map of Complex evaluation.
The step 101 is specifically included：
Step 1011：The digital raster image that the papery map data of the target area is scanned into is obtained, is utilized
ArcGIS platforms carry out space geometry accuracy registration and correction to the digital raster image, then to the digital raster image
In each geographic element carry out vector quantization, set up the vector database of target area.
The vector database includes geographical spatial data and Non-spatial Data, all types of specific ginsengs of evaluating data requirement
It is shown in Table 1, table 2, table 3, table 4：
The Evaluation for Suitability of Land Resources data demand of table 1
| Sequence number | Data name | Data type | Data format | Resolution ratio |
| 1 | Terrain data | Spatial data | Grid | 15m |
| 2 | Geologic data | Spatial data | Vector | -- |
| 3 | Traffic data | Spatial data | Vector | -- |
| 4 | Present status of land utilization | Spatial data | Vector | -- |
| 5 | Ecological data | Spatial data | Vector | -- |
| 6 | Protection zone data | Spatial data | Vector | -- |
The Ecosystem Service of table 2 and ecological security assessment data demand
The land use Hazard Risk Assessment data demand of table 3
| Sequence number | Data name | Data type | Data format | Resolution ratio |
| 1 | Altitude data | Spatial data | Grid | 8m/16m |
| 2 | Remote sensing image | Spatial data | Grid | 8m/16m |
| 3 | Present status of land utilization | Spatial data | Vector | -- |
| 4 | All kinds of disaster distributions | Spatial data | Vector | -- |
The construction land Space Expanding overall merit data demand of table 4
| Sequence number | Data name | Data type | Data format | Resolution ratio |
| 1 | Evaluation for Suitability of Land Resources data | Spatial data | Grid | 8m/16m |
| 2 | Ecology service and safety evaluation data | Spatial data | Grid | 8m/16m |
| 3 | Land use Hazard Risk Assessment data | Spatial data | Grid | 8m/16m |
Step 1012：By 1:Contour point figure layer in 10000 target area Digital Topographic Map ' imported into ArcGIS and put down
Digital elevation model is generated in platform.
Step 1013：Gridding method is used to enter the target area with 15m × 15m grid cell on ArcGIS platforms
Row is divided, and is obtained single evaluation points and is evaluated figure layer；Wherein, each cell of acquisition is an evaluation unit, each described
A figure layer in evaluation points corresponding A rcGIS platforms.
Step 1014：Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points,
Multifactor evaluation is carried out to target area using different types of evaluation points, multiple suitabilities of each evaluation points are obtained
Evaluate score value.
The step 1014 includes：According to the vector database, the digital elevation model and single evaluation points
Figure layer is evaluated, Evaluation for Suitability of Land Resources is carried out to the target area, Evaluation for Suitability of Land Resources score value is obtained.
The calculating of the Evaluation for Suitability of Land Resources score value is using the general evaluation method of the limit.Evaluation index should be divided into
Extreme factors and general sexual factor.Extreme factors region, is divided into pole and is not suitable for area, the region without extreme factors, should
Suitability grades are divided according to the Evaluation for Suitability of Land Resources score value.
The calculation formula of the general evaluation method of the limit is as follows：
Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent the evaluation unit
The quantization score value of i general factor, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent described to evaluate
The quantization score value of j-th of limiting factor of unit, n represents the number of the general factor, and m represents the number of the limiting factor.
Wherein, the general factor is calculated using cumulative summing mode, and the limiting factor is calculated using quadrature mode.Institute
There is key element index result of calculation to switch to raster data, overall merit score value is calculated to facilitate.The weight coefficient is using level point
Analysis method is determined.
The step 1014 also includes：According to the vector database, the digital elevation model and it is described it is single evaluate because
Son evaluates figure layer, carries out land ecosystem services and ecological security assessment to the target area, obtains land ecology service
Function and ecological security assessment score value.
The calculating of the land ecosystem services and ecological security assessment score value uses equivalence factor method, different distinguishing
On the basis of species ecosystem service function, the various service functions of the different type ecosystem are built based on quantifiable standard
Value equivalent, be estimated with reference to the spatial distribution of the ecosystem.
Wherein, the calculating of land ecosystem services evaluation score value uses below equation：
Pij=eijPa (3)
Wherein, i=1,2 ..., 9, j=1,2 ..., 9, PaRepresent the economic value of single value of services equivalence factor
Amount；PiRepresent the production value of the i-th class land ecosystem unit area；PijRepresent the i-th class jth kind land ecosystem certain
The unit area value of service function；eijRepresent the equivalents of i-th class jth kind land ecosystem certain service function.
The total value of services in region is represented with V.The total value of services in region is calculated using following equation：
Wherein, V represents Land in Regional Land ecosystems services total value；AiRepresent the i-th class Ecosystem area；AijI-th class
The amendment of jth kind ecosystem service function unit area is worth.
Based on vegetation coverage size amendment land-based area cell Ecosystem Service Value spatial distribution.The amendment is applied to agriculture
The land use pattern of the vegetative coverages such as field, forest land, meadow, field.Correction formula is as follows：
Wherein, fviRepresent cell vegetation coverage modifying factor；fijRepresent i-th cell lattice jth class ecosystem vegetation
Coverage；fjRepresent jth class ecosystem vegetative coverage average degree average value.
Index calculation uses below equation：
Wherein, T represents topographic index；α represents to flow through domatic any point unit contour length catchment area；β represents stream
Through the gradient at domatic any point.
Height above sea level index calculates and uses below equation：
E=-lg Δs H (7)
Wherein, E represents regional height above sea level index；Δ H represents regional depth displacement.
Index factor dimensionization chooses the theoretical foundation that extreme difference standardized method unitizes as dimension.Index factor dimension
Change uses procedure below：
The standardization of involved factor uses below equation：
Wherein, Z represents the standardized value of involved factor；XiRepresent index factor value；XmaxRepresent index factor maximum；
XminRepresent index factor minimum value.
If the quantization modulation value environmental quality concept implication of certain factor is opposite with above formula sign, (such as soil erosion amount is more
Overall situation quality is poorer), then involved factor standardization quantitative formula should use below equation：
Wherein, Z represents the standardized value of involved factor；XiRepresent index factor value；XmaxRepresent index factor maximum；
XminRepresent index factor minimum value.
According to the characteristics of the ecosystem index factor of target area, entropy-weights coefficient method is chosen true as evaluation criterion weight
Determine foundation.
Each index contributes different to evaluation unit, need to act on size according to index and give different weights respectively.Entropic coefficient
Method determines index weights according to the relative intensity of variation of index to system entire effect.
E-government Network determines that the weight process of each index is as follows：
Assuming that there is m evaluation sample, n evaluation indexes are then represented with Evaluations matrix [Y]={ yj } m × n, wherein the i-th (i
=1,2 ..., n) the weight calculation formula of item index is：
Wherein, EiRepresent index output entropy；wiRepresent index weights.
The step 1014 also includes：According to the vector database, the digital elevation model and it is described it is single evaluate because
Son evaluates figure layer, and land use calamity source assessment is carried out to the target area, obtains the assessment point of land use calamity source
Value.
The weight calculation of the land use calamity source evaluation factor uses PCA, by each evaluation points
Analyzed with the disaster density figure that is generated respectively by all kinds of disaster distributing vector figures, obtain each evaluation points and occur with disaster
Correlation and each factor between coefficient correlation.
In order to remove interdependence effects between the factor, two factors of correlation maximum between the factor are incorporated as a factor
Participate in calculating.
The standardized calculation of the corresponding evaluation points coefficient correlation of each Disasters Type, should use below equation：
Wherein,Represent the weighted value of j-th of evaluation points of i-th kind of disaster；I-th kind of expression, j-th of disaster is evaluated
The coefficient correlation that the factor occurs with disaster；N represents the evaluation points quantity of i-th kind of disaster.
All kinds of Hazard Assessment factors are divided into Flood inducing factors, hazard-affected body and the part of historical disaster density three, should be used respectively
Fuzzy mathematics method, carries out land use Hazard Risk Assessment and is subordinate to rating calculation.
The land use Hazard Risk Assessment for calculating all kinds of disasters is subordinate to grade and uses below equation：
Wherein, QiRepresent that i-th kind of disaster is subordinate to grade (be divided into 1,2,3 grades), numerical value is bigger, and risk class is higher；Represent
J-th of evaluation points weighted value of i-th kind of disaster；Represent that i-th kind of disaster, j-th of evaluation points numerical value is under the jurisdiction of m grades
Degree of membership；N represents i-th kind of Hazard Assessment factor quantity；M represents that land use Hazard Risk Assessment is subordinate to grade, m={ 1 (peaces
Entirely), 2 (safer), 3 (danger) }.
Flood inducing factors, hazard-affected body are subordinate to grade with historical disaster density three to be added, and obtain the soil profit of all kinds of calamity kinds
It is subordinate to grade with Hazard Risk Assessment, score value is 3-9.
Land use Hazard Risk Assessment classification rule is as shown in table 5.
The land use Hazard Risk Assessment of table 5 classification rule
Step 1015：Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points,
Calculated using analytic hierarchy process (AHP) and obtain the corresponding multiple weights of each evaluation points.
The corresponding relation of Evaluation for Suitability of Land Resources index system and weight is as shown in table 6：
The Evaluation for Suitability of Land Resources index system of table 6 and weight
Step 1016：According to the multiple suitability evaluation score value and the multiple weight, calculating obtains the first construction use
Ground Space Expanding map of Complex evaluation.
Step 1016 is specifically included：
Using multifactor overlay analysis method, by the multiple suitability evaluation score value and the multiple weight in ArcGIS
It is overlapped by formula (14), many evaluation points construction land Space Expanding overall merits point of target area is obtained based on GIS
Value.Land valuation unit comprehensive score value is obtained according to the evaluation points and the construction land Space Expanding overall merit score value
Frequency histogram.On the basis of the land valuation unit comprehensive score value frequency histogram, find out wherein score value and drastically change
Region, as the class boundaries of construction land Space Expanding overall merit, obtain the first construction land Space Expanding integrate comment
Valency figure.
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
Wherein, S represents construction land Space Expanding overall merit score value, UiThe weight of evaluation points described in i-th is represented,
XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points.
The first construction land Space Expanding map of Complex evaluation answers classification display, including suitably builds area, conveniently builds
If area, the general area, limitation of suitably building build area, can not build area's Pyatyi, coloring should meet the regulation of table 7.
Table 7 evaluates result map legend graph coloring value and sets table
| Sequence number | Assessment grade title | Colour title | R values | G values | B values |
| 1 | Suitably build area | It is dark green | 56 | 167 | 0 |
| 2 | Conveniently build area | It is dark green | 64 | 215 | 0 |
| 3 | Typically suitably build area | It is light green | 152 | 229 | 0 |
| 4 | Area is built in limitation | It is orange | 255 | 170 | 1 |
| 5 | Area can not be built | White | 255 | 255 | 255 |
Step 102：Prolongable first soil face is calculated according to the first construction land Space Expanding map of Complex evaluation
Product.
From the construction land Space Expanding map of Complex evaluation, it can suitably be built area, conveniently build area, one
As suitably build area, limitation and build area and can not build position and the size in area.
Area will can be suitably built according to actual needs, conveniently built in area, general suitably construction area and limitation construction area
One or more region divisions for region can be expanded so that according to the first construction land Space Expanding map of Complex evaluation,
It can calculate and obtain prolongable first land area and position, prolongable first land area and position belong to existing
Available construction land.
Step 103：Judge whether first land area is less than demand land area, obtain the first judged result.
Demand land area is set in advance, judges whether first land area is less than the size of demand land area,
Obtain the first judged result.
Step 104：When first judged result is to be, one or more evaluation points are adjusted, according to adjustment
The evaluation points afterwards carry out multifactor evaluation to target area, obtain the second construction land Space Expanding map of Complex evaluation.
The evaluation points according to after adjustment carry out multifactor evaluation to target area, obtain the second construction land
The method of Space Expanding map of Complex evaluation is evaluated with foregoing according to different types of evaluation points are multifactor to target area progress,
The method for obtaining the first construction land Space Expanding map of Complex evaluation is identical.Simply the evaluation points are adjusted.
When first judged result is no, terminate to evaluate, directly will be according to the first construction land Space Expanding
Map of Complex evaluation calculates obtained prolongable first land area and position as prolongable soil position and area.
Step 105：Prolongable second soil face is calculated according to the second construction land Space Expanding map of Complex evaluation
Product.
It is described that prolongable second land area is calculated according to the second construction land Space Expanding map of Complex evaluation
Method and the foregoing side that prolongable first land area is calculated according to the first construction land Space Expanding map of Complex evaluation
Method is identical.
Step 106：Judge whether second land area is less than the size of the demand land area, obtain second and sentence
Disconnected result.
Step 107：When second judged result when being, to return to the one or more evaluation points of adjustment,
Multifactor evaluation is carried out to target area according to the evaluation points after adjustment, the second construction land Space Expanding synthesis is obtained
The step of evaluating figure.
When second judged result when being, to continue to adjust one or more evaluation points, after adjustment
The evaluation points continue to carry out target area multifactor evaluation, obtain the second construction land Space Expanding map of Complex evaluation,
Prolongable second land area is calculated according to the second construction land Space Expanding map of Complex evaluation, continuation judges described the
Whether two land areas are less than the size of the demand land area, obtain the second judged result, until the described second judgement knot
Fruit is no.
Step 108：When second judged result is no, to the second construction land Space Expanding map of Complex evaluation
Calculating is overlapped with the first construction land Space Expanding map of Complex evaluation, prolongable soil position and area is obtained.
Obtained prolongable first soil face can be calculated according to the first construction land Space Expanding map of Complex evaluation
Product and position, obtained prolongable second soil face can be calculated according to the second construction land Space Expanding map of Complex evaluation
Product and position, are overlapped calculating with second land area and position by first land area and position, are typically
First land area is subtracted with second land area, the prolongable soil position of the invention finally to be obtained is obtained
And area, also just obtain prolongable construction land space.Then according to the evaluation points condition of adjustment, it can be opened up described in improvement
Some natural qualities in the construction land space of exhibition, can be used as construction land, so that available construction land
Existing usable land is not limited only to, the prolongable scope of construction land is expanded.
The above-mentioned technical proposal of the present invention is based on two stage Computation schema：First stage, enter with conventional method of analysis
Row is evaluated, and obtains the expansible soil under conventional method；Second stage, changes restrictive condition (evaluation points), obtains according to demand
The soil of construction demand is obtained, the soil for needing to transform is found, so that it is proposed that the scheme of its transformation.Present inventive concept and existing skill
The difference of art is that the research method of existing construction land Space Expanding is substantially according to the various natural shapes such as existing soil
Condition is evaluated, and to find the soil that can be used for building, and the method for the invention is that, according to construction land demand, carrying out counter push away needs
Which which it can be used after the natural quality for improving soil as construction land, so that available construction land is simultaneously
Existing usable land is not limited solely to, the expansible scope of construction land is expanded.
Fig. 2 is a kind of system construction drawing of construction land Space Expanding system of the embodiment of the present invention.
Referring to Fig. 2, a kind of construction land Space Expanding system, including：
First construction land Space Expanding map of Complex evaluation acquisition module 201, for according to different types of evaluation points
Multifactor evaluation is carried out to target area, the first construction land Space Expanding map of Complex evaluation is obtained；
First land area acquisition module 202, based on according to the first construction land Space Expanding map of Complex evaluation
Calculate prolongable first land area；
First judged result acquisition module 203, for judging whether first land area is less than demand land area
Size, obtain the first judged result；
Second construction land Space Expanding map of Complex evaluation acquisition module 204, for being yes when first judged result
When, one or more evaluation points are adjusted, multifactor comment is carried out to target area according to the evaluation points after adjustment
Valency, obtains the second construction land Space Expanding map of Complex evaluation；
Second land area acquisition module 205, based on according to the second construction land Space Expanding map of Complex evaluation
Calculate prolongable second land area；
Second judged result acquisition module 206, for judging whether second land area is less than the demand land used
The size of area, obtains the second judged result；
Adjusting module 207 being returned, during for being when second judged result, the second construction land space is returned to
Map of Complex evaluation acquisition module is expanded, the one or more evaluation points of adjustment are performed, according to institute's commentary after adjustment
Valency factor pair target area carries out multifactor evaluation, the step of obtaining the second construction land Space Expanding map of Complex evaluation；
Prolongable soil position and area acquisition module 208, for when second judged result is no, to described
Second construction land Space Expanding map of Complex evaluation is overlapped meter with the first construction land Space Expanding map of Complex evaluation
Calculate, obtain prolongable soil position and area.
Optionally, the first construction land Space Expanding map of Complex evaluation acquisition module 201 is specifically included：
Vector database setting up submodule, for obtaining the digital grid that the papery map data of the target area is scanned into
Table images, carry out space geometry accuracy registration and correction, then to described using ArcGIS platforms to the digital raster image
Each geographic element in digital raster image carries out vector quantization, sets up the vector database of target area；
Digital elevation model setting up submodule, for by 1:Contour point in 10000 target area Digital Topographic Map '
Figure layer imported into ArcGIS platforms and generates digital elevation model；
Single evaluation points evaluate figure layer setting up submodule, for using gridding method on ArcGIS platforms by the target
Domain is divided with 15m × 15m grid cell, is obtained single evaluation points and is evaluated figure layer；Wherein, each cell of acquisition
For an evaluation unit, a figure layer in each evaluation points corresponding A rcGIS platforms；
Suitability evaluation score value acquisition submodule, for according to the vector database, the digital elevation model and institute
State single evaluation points and evaluate figure layer, multifactor evaluation is carried out to target area using different types of evaluation points, each institute is obtained
State multiple suitability evaluation score values of evaluation points；
Weight Acquisition submodule, for according to the vector database, the digital elevation model and it is described it is single evaluate because
Son evaluates figure layer, is calculated using analytic hierarchy process (AHP) and obtains the corresponding multiple weights of each evaluation points；
First construction land Space Expanding map of Complex evaluation acquisition submodule, for according to the multiple suitability evaluation point
Value and the multiple weight, calculating obtain the first construction land Space Expanding map of Complex evaluation.
Optionally, the suitability evaluation score value acquisition submodule is specifically included：
Evaluation for Suitability of Land Resources score value acquiring unit, for according to the vector database, the digital elevation mould
Type and single evaluation points evaluate figure layer, carry out Evaluation for Suitability of Land Resources to the target area, obtain land resource
Suitability evaluation score value；
Land ecosystem services and ecological security assessment score value acquiring unit, for according to the vector database, institute
State digital elevation model and single evaluation points evaluate figure layer, land ecosystem services and life are carried out to the target area
State safety evaluation, obtains land ecosystem services and ecological security assessment score value；
Land use calamity source point value of evaluation acquiring unit, for according to the vector database, the digital elevation
Model and single evaluation points evaluate figure layer, carry out land use calamity source assessment to the target area, obtain soil
Utilize calamity source point value of evaluation.
Optionally, the Evaluation for Suitability of Land Resources score value acquiring unit, is specifically included：
Evaluation for Suitability of Land Resources score value obtains subelement, for according to the vector database, the digital elevation
Model and single evaluation points evaluate figure layer, and the land resource of the target area is calculated using the general evaluation method of the limit
Suitability evaluation score value；
The calculation formula of the general evaluation method of the limit is as follows：
Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent the evaluation unit
The quantization score value of i general factor, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent described to evaluate
The quantization score value of j-th of limiting factor of unit, n represents the number of the general factor, and m represents the number of the limiting factor.
Optionally, the first construction land Space Expanding map of Complex evaluation acquisition submodule, is specifically included：
First construction land Space Expanding map of Complex evaluation acquiring unit, for using multifactor overlay analysis method, by institute
State multiple suitability evaluation score values and the multiple weight is overlapped, obtain the first construction land Space Expanding synthesis and comment
Valency figure；
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
Wherein, S represents the first construction land Space Expanding overall merit score value, UiRepresent evaluation points described in i-th
Weight, XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points.
The above-mentioned technical proposal of the present invention, according to construction land demand come it is counter release need which soil of improvement which oneself
It can be used after right attribute as construction land, so that available construction land is not limited only to existing can use
Soil, expands the expansible scope of construction land.
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
The bright method and its core concept for being only intended to help to understand the present invention；Simultaneously for those of ordinary skill in the art, foundation
The thought of the present invention, will change in specific embodiments and applications.In summary, this specification content is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of construction land Space Expanding method, it is characterised in that methods described includes：
Multifactor evaluation is carried out to target area according to different types of evaluation points, the first construction land Space Expanding is obtained comprehensive
Close and evaluate figure；
Prolongable first land area is calculated according to the first construction land Space Expanding map of Complex evaluation；
Judge whether first land area is less than demand land area, obtain the first judged result；
When first judged result is to be, one or more evaluation points are adjusted, according to the evaluation after adjustment
Factor pair target area carries out multifactor evaluation, obtains the second construction land Space Expanding map of Complex evaluation；
Prolongable second land area is calculated according to the second construction land Space Expanding map of Complex evaluation；
Judge whether second land area is less than the demand land area, obtain the second judged result；
When second judged result when being, to return to the one or more evaluation points of adjustment, after adjustment
The evaluation points carry out multifactor evaluation to target area, obtain the step of the second construction land Space Expanding map of Complex evaluation
Suddenly；
When second judged result is no, the second construction land Space Expanding map of Complex evaluation is built with described first
If land used Space Expanding map of Complex evaluation is overlapped calculating, prolongable soil position and area are obtained.
2. according to the method described in claim 1, it is characterised in that it is described according to different types of evaluation points to target area
Multifactor evaluation is carried out, the first construction land Space Expanding map of Complex evaluation is obtained, specifically includes：
The digital raster image that the papery map data of the target area is scanned into is obtained, using ArcGIS platforms to the number
Word grating image carries out space geometry accuracy registration and correction, and then each geographic element in the digital raster image is entered
Row vector quantization, sets up the vector database of target area；
By 1:Contour point figure layer in 10000 target area Digital Topographic Map ', which is imported into ArcGIS platforms, generates numeral height
Journey model；
Use gridding method to be divided the target area with 15m × 15m grid cell on ArcGIS platforms, obtain single
Evaluation points evaluate figure layer；Wherein, each cell of acquisition is an evaluation unit, each evaluation points correspondence
A figure layer in ArcGIS platforms；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, using different type
Evaluation points to target area carry out it is multifactor evaluate, obtain multiple suitability evaluation score values of each evaluation points；
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, using step analysis
Method calculates and obtains the corresponding multiple weights of each evaluation points；
According to the multiple suitability evaluation score value and the multiple weight, calculating obtains the first construction land Space Expanding synthesis
Evaluate figure.
3. method according to claim 2, it is characterised in that described according to the vector database, the digital elevation
Model and single evaluation points evaluate figure layer, and multifactor evaluation is carried out to target area using different types of evaluation points,
Multiple suitability evaluation score values of each evaluation points are obtained, are specifically included：
Figure layer is evaluated according to the vector database, the digital elevation model and the single evaluation points, to the target
Domain carries out Evaluation for Suitability of Land Resources, obtains Evaluation for Suitability of Land Resources score value；
Figure layer is evaluated according to the vector database, the digital elevation model and the single evaluation points, to the target
Domain carries out land ecosystem services and ecological security assessment, obtains land ecosystem services and ecological security assessment score value；
Figure layer is evaluated according to the vector database, the digital elevation model and the single evaluation points, to the target
Domain carries out land use calamity source assessment, obtains land use calamity source point value of evaluation.
4. method according to claim 3, it is characterised in that according to the vector database, the digital elevation model
Figure layer is evaluated with single evaluation points, Evaluation for Suitability of Land Resources is carried out to the target area, land resource is obtained and fits
Suitable property evaluates score value, specifically includes：
Figure layer is evaluated according to the vector database, the digital elevation model and single evaluation points, it is general using the limit
Evaluation method calculate the Evaluation for Suitability of Land Resources score value of the target area；
The calculation formula of the general evaluation method of the limit is as follows：
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Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent i-th one of the evaluation unit
As the factor quantization score value, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent the evaluation unit
The quantization score value of j-th of limiting factor, n represents the number of the general factor, and m represents the number of the limiting factor.
5. method according to claim 4, it is characterised in that described according to the multiple suitability evaluation score value and described
Multiple weights, calculating obtains the first construction land Space Expanding map of Complex evaluation, specifically includes：
Using multifactor overlay analysis method, the multiple suitability evaluation score value and the multiple weight are overlapped, obtained
The first construction land Space Expanding map of Complex evaluation；
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
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Wherein, S represents the first construction land Space Expanding overall merit score value, UiThe weight of evaluation points described in i-th is represented,
XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points.
6. a kind of construction land Space Expanding system, it is characterised in that the system includes：
First construction land Space Expanding map of Complex evaluation acquisition module, for according to different types of evaluation points to target
Domain carries out multifactor evaluation, obtains the first construction land Space Expanding map of Complex evaluation；
First land area acquisition module, for calculating and can expand according to the first construction land Space Expanding map of Complex evaluation
The first land area；
First judged result acquisition module, for judging whether first land area is less than demand land area, obtains the
One judged result；
Second construction land Space Expanding map of Complex evaluation acquisition module, during for being when first judged result, adjustment
One or more evaluation points, carry out multifactor evaluation to target area according to the evaluation points after adjustment, obtain
Second construction land Space Expanding map of Complex evaluation；
Second land area acquisition module, for calculating and can expand according to the second construction land Space Expanding map of Complex evaluation
The second land area；
Second judged result acquisition module, for judging whether second land area is less than the demand land area, is obtained
To the second judged result；
Adjusting module being returned, during for being when second judged result, the second construction land Space Expanding is returned to comprehensive
Close and evaluate figure acquisition module, the one or more evaluation points of adjustment are performed, according to the evaluation points after adjustment
Multifactor evaluation, the step of obtaining the second construction land Space Expanding map of Complex evaluation are carried out to target area；
Prolongable soil position and area acquisition module, for when second judged result is no, being built to described second
If land used Space Expanding map of Complex evaluation is overlapped calculating with the first construction land Space Expanding map of Complex evaluation, obtain
Prolongable soil position and area.
7. system as claimed in claim 6, it is characterised in that the first construction land Space Expanding map of Complex evaluation is obtained
Module is specifically included：
Vector database setting up submodule, for obtaining the digital raster graphic that the papery map data of the target area is scanned into
Picture, carries out space geometry accuracy registration and correction, then to the numeral using ArcGIS platforms to the digital raster image
Each geographic element in grating image carries out vector quantization, sets up the vector database of target area；
Digital elevation model setting up submodule, for by 1:Contour point figure layer in 10000 target area Digital Topographic Map '
It imported into ArcGIS platforms and generates digital elevation model；
Single evaluation points evaluate figure layer setting up submodule, for use gridding method on ArcGIS platforms by the target area with
15m × 15m grid cell is divided, and is obtained single evaluation points and is evaluated figure layer；Wherein, each cell of acquisition is one
A figure layer in individual evaluation unit, each evaluation points corresponding A rcGIS platforms；
Suitability evaluation score value acquisition submodule, for according to the vector database, the digital elevation model and the list
Evaluation points evaluate figure layer, and multifactor evaluation is carried out to target area using different types of evaluation points, each institute's commentary is obtained
Multiple suitability evaluation score values of the valency factor；
Weight Acquisition submodule, for being commented according to the vector database, the digital elevation model and single evaluation points
Valency figure layer, is calculated using analytic hierarchy process (AHP) and obtains the corresponding multiple weights of each evaluation points；
First construction land Space Expanding map of Complex evaluation acquisition submodule, for according to the multiple suitability evaluation score value and
The multiple weight, calculating obtains the first construction land Space Expanding map of Complex evaluation.
8. system as claimed in claim 7, it is characterised in that the suitability evaluation score value acquisition submodule is specifically included：
Evaluation for Suitability of Land Resources score value acquiring unit, for according to the vector database, the digital elevation model and
Single evaluation points evaluate figure layer, carry out Evaluation for Suitability of Land Resources to the target area, obtain land resource suitable
Property evaluate score value；
Land ecosystem services and ecological security assessment score value acquiring unit, for according to the vector database, the number
Word elevation model and single evaluation points evaluate figure layer, and land ecosystem services are carried out to the target area and are pacified with ecological
It is complete to evaluate, obtain land ecosystem services and ecological security assessment score value；
Land use calamity source point value of evaluation acquiring unit, for according to the vector database, the digital elevation model
Figure layer is evaluated with single evaluation points, land use calamity source assessment is carried out to the target area, land use is obtained
Calamity source point value of evaluation.
9. system as claimed in claim 8, it is characterised in that the Evaluation for Suitability of Land Resources score value acquiring unit, tool
Body includes：
Evaluation for Suitability of Land Resources score value obtains subelement, for according to the vector database, the digital elevation model
Figure layer is evaluated with single evaluation points, the land resource for calculating the target area using the general evaluation method of the limit is suitable
Property evaluate score value；
The calculation formula of the general evaluation method of the limit is as follows：
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Wherein, M represents the Evaluation for Suitability of Land Resources score value of each evaluation unit, ViRepresent i-th one of the evaluation unit
As the factor quantization score value, WiRepresent the weight coefficient of described i-th of general factor of evaluation unit, XjRepresent the evaluation unit
The quantization score value of j-th of limiting factor, n represents the number of the general factor, and m represents the number of the limiting factor.
10. system as claimed in claim 9, it is characterised in that the first construction land Space Expanding overall merit
Figure acquisition submodule, is specifically included：
First construction land Space Expanding map of Complex evaluation acquiring unit, will be described more for using multifactor overlay analysis method
Individual suitability evaluation score value and the multiple weight are overlapped, and obtain the first construction land Space Expanding overall merit
Figure；
The calculation formula that the multiple suitability evaluation score value and the multiple weight are overlapped is：
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Wherein, S represents the first construction land Space Expanding overall merit score value, UiThe weight of evaluation points described in i-th is represented,
XiThe suitability evaluation score value of evaluation points described in i-th is represented, n represents the number of the evaluation points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385619.2A CN107220768A (en) | 2017-05-26 | 2017-05-26 | A kind of construction land Space Expanding method and system |
Applications Claiming Priority (1)
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| CN109767042A (en) * | 2019-01-17 | 2019-05-17 | 中国人民解放军陆军工程大学 | Works of service team for civil air defence's site selecting method based on land used assessment |
| CN110502593A (en) * | 2018-12-27 | 2019-11-26 | 厦门理工学院 | Multifactor assessment Self-service Library lays the method, device and equipment of suitability |
| CN114139996A (en) * | 2021-12-06 | 2022-03-04 | 云南瀚哲科技有限公司 | High-standard farmland construction evaluation method based on urban and rural global development |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107886216A (en) * | 2017-10-12 | 2018-04-06 | 天津大学 | A kind of land carrying capacity analysis method based on Evaluation of Land Use Suitability |
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| CN114139996A (en) * | 2021-12-06 | 2022-03-04 | 云南瀚哲科技有限公司 | High-standard farmland construction evaluation method based on urban and rural global development |
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