CN106874415A - Environmental sensitive area database construction method and server based on generalized information system - Google Patents
Environmental sensitive area database construction method and server based on generalized information system Download PDFInfo
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- CN106874415A CN106874415A CN201710050030.7A CN201710050030A CN106874415A CN 106874415 A CN106874415 A CN 106874415A CN 201710050030 A CN201710050030 A CN 201710050030A CN 106874415 A CN106874415 A CN 106874415A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
Abstract
The present invention discloses environmental sensitive area database construction method and server based on generalized information system, and wherein the method is completed in server, including：Obtain environmental sensitive area thematic data and store to ground chart；A unique ID is distributed in each environmental sensitive area in chart over the ground, and respective environment sensitizing range thematic data is associated with ID；Ground chart is divided into the map layer table of equal number number for quantity according to environmental sensitive area, and each map layer table is associated with an ID and a corresponding environmental sensitive area, finally constructs environmental sensitive area database；Each map layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and per map layer table in data be used for showing the cartographic information of respective environment sensitizing range after client call.The present invention build environmental sensitive area database cover environmentally sensitive areas distribution can real-time update and expansion.
Description
Technical field
The invention belongs to substation sensitizing range data processing field, more particularly to a kind of environment based on generalized information system
Sensitizing range database construction method and server.
Background technology
As the development of China's power industry, the capacity of power network are increasing, the distance of conveying is more and more remote, transmission line of electricity
Voltage class also improving constantly, the construction scale of high voltage substation and overhead transmission line constantly expands.Along with economy
The influence of the social factor such as development and population growth, newly-built project of transmitting and converting electricity is gradually approached to densely populated area and had become greatly
Gesture is become.Many cities are powered the reorganization and expansion of power network in recent years, and transformer station is gradually built to urban district, high pressure by city suburbs
Overhead transmission line spreads all over the place in Urban Public playground and residential block, transformer station and the issuable environment of transmission line of electricity
Influence is increasingly subject to the concern of people, and the environmental protection work to project of transmitting and converting electricity proposes requirement higher.
In project of transmitting and converting electricity environmental impact assessment and design phase, relevant data are distributed due to lacking environmentally sensitive areas,
In project of transmitting and converting electricity addressing route selection and process of construction, measure and pipe that part engineering is taken in terms of environmentally sensitive areas avoidance
Reason supporting method is not enough；Project of transmitting and converting electricity environmental impact prediction technology is not high in terms of automation, the level of informatization, in addressing choosing
Line stage and path cannot quickly, timely and accurately assess the influence of project of transmitting and converting electricity environmentally sensitive point when adjusting.
In sum, it is necessary to set up renewable, the database expanded for covering environmentally sensitive areas distribution, for for based on
The automatic identification of the project of transmitting and converting electricity environment sensitive spot of existing power network GIS platform, sorting technique and project of transmitting and converting electricity electromagnetism, noise
Influence automatic Prediction analysis offers precise data basis to improve information-based, the essence of State Grid Corporation of China's power network environmental protection management
Benefitization, intelligent level.
The content of the invention
In order to solve the shortcoming of prior art, it is quick that the first object of the present invention is to provide a kind of environment based on generalized information system
Sensillary area data base management system.
A kind of environmental sensitive area database construction method based on generalized information system of the invention, the method is complete in server
Into it is specifically included：
Step 1：Obtain environmental sensitive area thematic data and store to ground chart；The environmental sensitive area thematic data bag
Include the base attribute information of environmental sensitive area and the geographical location information of the environmental sensitive area detected by generalized information system；Wherein,
The base attribute information of environmental sensitive area includes rank, membership setup time and the protection object information of environmental sensitive area；
Step 2：A unique ID is distributed in each environmental sensitive area in chart over the ground, and respective environment sensitizing range is special
Topic data are associated with ID；
Step 3：Ground chart is divided into the map layer table of equal number number for quantity according to environmental sensitive area, each
Map layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environmental sensitive area database；Each ground
Figure layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and data quilt in every map layer table
It is used for showing the cartographic information of respective environment sensitizing range after client call.
Further, the method also includes：Base attribute information and geographical location information according to environmental sensitive area, to every
Individual map layer table sets up a corresponding spatial index table, for assisting to carry out spatial analysis, to accelerate spatial analysis
Speed.
Further, the method also includes：Environmental sensitive area thematic data is input into using raster data vector quantization mode
To server or it is manually inputted into server.
Environmental sensitive area thematic data of the invention using raster data vector inputting, be manually entered two ways and carry out
Treatment.For the situation of all papery data of environmental sensitive area thematic data, this papery data cannot be used directly, it is necessary to
First carry out rasterizing operation, papery data be converted into number format, by development platform by the geographical position of all kinds of sensitizing ranges,
In the data entry systems such as border.But when rasterizing is operated, due to the problem of scanning accuracy, do not have coordinate on map in addition
Parameter, therefore, the data after rasterizing occur that border is not inconsistent and digital topography map is not matched in input system, often
A series of problems, it is necessary to by artificial means, to the sensitizing range thematic map after rasterizing, determine that several are positioned first on border
Point, is corrected according to the thematic information collected to sensitizing range border stationary point, finally realize sensitizing range information in system with
Data in thematic information can reach identical precision on same ratio chi.Meanwhile, enter in the relevant information to sensitizing range
Attribute data during row artificial correction also to each sensitizing range carries out typing, be finally completed the construction of sensitizing range database with
Correction work.
Further, middle type of ground objects according to the map, by the ground of the corresponding environmental sensitive area of each map layer table memory storage
Reason positional information is divided into node class geographical location information, segmental arc class geographical location information and polygon class geographical location information；
Node class geographical location information is corresponding with punctual geo-objects, and segmental arc class geographical location information is corresponding with linear ground object, polygon
Class geographical location information is corresponding with area feature.Type of ground objects and corresponding geographical location information can so be carried out
Match somebody with somebody, corresponding atural object can be more accurately shown on map.
Further, the spatial index table uses BSP tree, R trees or R+ tree constructions.
BSP tree, R trees or R+ tree constructions are the spatial indexs for dividing space from up to down, step by step.
BSP tree (Binary Space Partitioning Tree, two-dimensional space partition tree) is one kind step by step by space
The binary tree being divided into two, the distribution situation that it can be well with spatial object is adapted.And BSP tree depth is general all very big,
Influence the efficiency of various operations.
R trees are another forms that B-tree develops to hyperspace, and it is divided spatial object by scope, each node pair
A region and a disk page are answered, the regional extent of its all child node, non-leaf node are stored in the disk page of non-leaf node
The region of all child nodes all fall within its regional extent；Stored within its regional extent in the disk page of leaf node
The boundary rectangle of all spatial objects.The child node number that each node to be possessed has upper and lower limit, and lower limit ensures empty to disk
Between effective utilization, the upper limit ensures each node correspondence one disk page, but inserts the sky that new node causes certain node requirement
Between more than disk page when, the node is divided into two.R trees are a kind of dynamic indexing structures, i.e.,：Its inquiry can with insertion or
Delete is carried out simultaneously, and regularly tree construction need not be reorganized.
R+ trees are similar with R trees, and the corresponding area of space of sibling is non-overlapping in differring primarily in that R+ trees, so divide
Space eliminate R trees because allowing node between overlap " dead zone " that produces (node is in that without this node data
White space), invalid inquiry number is reduced, the efficiency of spatial index is provided significantly, but for insertion, the behaviour of deletion spatial object
Make, then to ensure that area of space is non-overlapping and efficiency is reduced by operation.R+ trees are to trans-regional space object data storage simultaneously
Have a redundancy, and with database data increase, redundancy constantly increases.
The second object of the present invention is to provide a kind of server for building the environmental sensitive area database based on generalized information system.
A kind of server for building the environmental sensitive area database based on generalized information system of the invention, including：
Data memory module, it is used to obtain environmental sensitive area thematic data and store to ground chart；The environment is quick
Sensillary area thematic data includes the base attribute information of environmental sensitive area and the geography of the environmental sensitive area detected by generalized information system
Positional information；Wherein, the rank of the base attribute information of environmental sensitive area including environmental sensitive area, membership setup time and
Protection object information；
A unique ID is distributed in ID distribute modules, each environmental sensitive area that it is used in chart over the ground, and will be corresponding
Environmental sensitive area thematic data is associated with ID；
Map layer table builds module, and it is used to the quantity according to environmental sensitive area ground chart is divided into equal number
Several map layer tables, each map layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environment quick
Sensillary area database；Each map layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and
Data are used for showing the cartographic information of respective environment sensitizing range after client call in per map layer table.
Further, the server also includes：Spatial index table sets up module, and it is used for the base according to environmental sensitive area
This attribute information and geographical location information, a corresponding spatial index table are set up to each map layer table, for assisting
Spatial analysis is carried out, to accelerate the speed of spatial analysis.
Further, the server also includes：Data input module, it is used to utilize environmental sensitive area thematic data
Raster data vector quantization mode is input into server or is manually inputted into server.
Environmental sensitive area thematic data of the invention using raster data vector inputting, be manually entered two ways and carry out
Treatment.For the situation of all papery data of environmental sensitive area thematic data, this papery data cannot be used directly, it is necessary to
First carry out rasterizing operation, papery data be converted into number format, by development platform by the geographical position of all kinds of sensitizing ranges,
In the data entry systems such as border.But when rasterizing is operated, due to the problem of scanning accuracy, do not have coordinate on map in addition
Parameter, therefore, the data after rasterizing occur that border is not inconsistent and digital topography map is not matched in input system, often
A series of problems, it is necessary to by artificial means, to the sensitizing range thematic map after rasterizing, determine that several are positioned first on border
Point, is corrected according to the thematic information collected to sensitizing range border stationary point, finally realize sensitizing range information in system with
Data in thematic information can reach identical precision on same ratio chi.Meanwhile, enter in the relevant information to sensitizing range
Attribute data during row artificial correction also to each sensitizing range carries out typing, be finally completed the construction of sensitizing range database with
Correction work.
Further, the server also includes：Geographical location information sort module, it is used for species according to the map middlely
Type, node class geographical position letter is divided into by the geographical location information of the corresponding environmental sensitive area of each map layer table memory storage
Breath, segmental arc class geographical location information and polygon class geographical location information；Node class geographical location information is relative with punctual geo-objects
Should, segmental arc class geographical location information is corresponding with linear ground object, and polygon class geographical location information is corresponding with area feature.This
Sample can be matched type of ground objects with corresponding geographical location information, can more accurately be shown accordingly on map
Thing.
Further, the spatial index table that the spatial index table is set up in module uses BSP tree, R trees or R+ tree constructions.
BSP tree, R trees or R+ tree constructions are the spatial indexs for dividing space from up to down, step by step.
BSP tree (Binary Space Partitioning Tree, two-dimensional space partition tree) is one kind step by step by space
The binary tree being divided into two, the distribution situation that it can be well with spatial object is adapted.And BSP tree depth is general all very big,
Influence the efficiency of various operations.
R trees are another forms that B-tree develops to hyperspace, and it is divided spatial object by scope, each node pair
A region and a disk page are answered, the regional extent of its all child node, non-leaf node are stored in the disk page of non-leaf node
The region of all child nodes all fall within its regional extent；Stored within its regional extent in the disk page of leaf node
The boundary rectangle of all spatial objects.The child node number that each node to be possessed has upper and lower limit, and lower limit ensures empty to disk
Between effective utilization, the upper limit ensures each node correspondence one disk page, but inserts the sky that new node causes certain node requirement
Between more than disk page when, the node is divided into two.R trees are a kind of dynamic indexing structures, i.e.,：Its inquiry can with insertion or
Delete is carried out simultaneously, and regularly tree construction need not be reorganized.
R+ trees are similar with R trees, and the corresponding area of space of sibling is non-overlapping in differring primarily in that R+ trees, so divide
Space eliminate R trees because allowing node between overlap " dead zone " that produces (node is in that without this node data
White space), invalid inquiry number is reduced, the efficiency of spatial index is provided significantly, but for insertion, the behaviour of deletion spatial object
Make, then to ensure that area of space is non-overlapping and efficiency is reduced by operation.R+ trees are to trans-regional space object data storage simultaneously
Have a redundancy, and with database data increase, redundancy constantly increases.
Beneficial effects of the present invention are：
(1) present invention is by the environmental sensitive area thematic data of acquisition and stores to ground chart；It is every in chart over the ground again
A unique ID is distributed in individual environmental sensitive area, and respective environment sensitizing range thematic data is associated with ID；According to environment
Ground chart is divided into the quantity of sensitizing range the map layer table of equal number number, and each map layer table is associated with an ID
And one environmental sensitive area of correspondence, finally construct environmental sensitive area database；Each map layer table internal memory contains correspondence environment
The base attribute information and geographical location information of sensitizing range, and per map layer table in data be used for showing phase after client call
Answer the cartographic information of environmental sensitive area；The environmental sensitive area database of structure cover environmentally sensitive areas distribution can real-time update
And expand；By the consistency operation of system, all geography information, environmental sensitive area data can be entered with the behaviour such as edlin, increase and decrease
Make, by setting up multistage auditing mechanism, database data can be made to be upgraded in time, in time reflection Around actual conditions,
It is preferably engineering feasibility study, plans evaluation service.
(2) the base attribute information and geographical location information always according to environmental sensitive area of the invention, to each map layer table
Set up a corresponding spatial index table, for assist carry out spatial analysis, to accelerate the speed of spatial analysis, be based on
The automatic identification of the project of transmitting and converting electricity environment sensitive spot of existing power network GIS platform, sorting technique provide accurate dynamic change
Data basis, finally realize informationization, lean, the intelligent level of State Grid Corporation of China's power network environmental protection management.
Brief description of the drawings
Fig. 1 is a kind of environmental sensitive area database construction method flow chart based on generalized information system of the invention.
Fig. 2 is a kind of server architecture figure for building the environmental sensitive area database based on generalized information system of the invention.
Specific embodiment
The present invention will be further described with embodiment below in conjunction with the accompanying drawings：
Environmental sensitive area involved in the present invention, refers to that all types of constituted by law is natural, culture protection ground, and right
Certain class pollution factor of construction project or the especially sensitive region of the ecology influence factor.
Environmental sensitive area includes：
(1) nature reserve area, scenic spot, Place of world cultural and natural heritage, drinking water source protection zone；
(2) Basic Farmland Conservation Zones, basic grassland, Forest Park, geological park, Important Wetland, wildwood, rare be on the point of
The natural areal concentration of danger wild animals and plants, the natural spawning field of important aquatile, feeding ground, wintering ground and migration passage,
Natural fishing ground, resources water shortage area, soil erosion keypoint control area, sandy land close protection zone, closing and semi-enclosed sea
Domain, eutrophic water；
(3) it is the region of major function, historical relic's protection with inhabitation, health care, culture and education, scientific research, administrative office etc.
Unit, with special history, culture, science, national meaning protecting field.
According to《Environmental Impact Assessment of Construction Items Classification Management register》(2015 editions), the environment that project of transmitting and converting electricity is related to is quick
Sensillary area is mainly (first) class and (three) class.With reference to the environmental impact assessment of company power network construction project, checking and accepting reality, this problem is by
(1) the relevant content in class and (three) class is merged, by nature reserve area, scenic spot, drinking water source protection
The environmental sensitive area that the engineerings such as area, cultural relics and historic sites are paid close attention to individually sets class, due to being evaluated in environmental impact assessment in project of transmitting and converting electricity
The sensitive targets such as Forest Park are often also related to, therefore, although the environment sensitive that Forest Park is not related in project of transmitting and converting electricity
In area's type, but also search money and develop when the relevant information of Forest Park is collected and arranged, be incorporated into nature protect
In shield area.In view of data volume and sensitive zone properties, cultural relics and historic sites, Place of world cultural and natural heritage are merged into cultural relics and historic sites
Figure layer, meanwhile, for convenience for the inquiry and management in the wire historic site such as ancient Great Wall, combining environmental sensitizing range database is built
If increased wire historic site class figure layer.As for resident residential area, hospital, school, Office Area paid close attention in engineering construction etc. with people
Sensitizing range based on group, its relevant location information, boundary information are mainly displaying in the topographic map after vector quantization, therefore,
In database design, such sensitizing range information is included into the map vector data storehouse of stratum, and the data of the part sensitizing range are by state's net
The GIS unified platforms are provided.
Fig. 1 is a kind of environmental sensitive area database construction method flow chart based on generalized information system of the invention.
The environmental sensitive area database construction method of generalized information system is based on as shown in Figure 1, and the method is completed in server,
It is specifically included：
Step 1：Obtain environmental sensitive area thematic data and store to ground chart；The environmental sensitive area thematic data bag
Include the base attribute information of environmental sensitive area and the geographical location information of the environmental sensitive area detected by generalized information system；Wherein,
The base attribute information of environmental sensitive area includes rank, membership setup time and the protection object information of environmental sensitive area.
Step 2：A unique ID is distributed in each environmental sensitive area in chart over the ground, and respective environment sensitizing range is special
Topic data are associated with ID.
Step 3：Ground chart is divided into the map layer table of equal number number for quantity according to environmental sensitive area, each
Map layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environmental sensitive area database；Each ground
Figure layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and data quilt in every map layer table
It is used for showing the cartographic information of respective environment sensitizing range after client call.
Wherein：
A. atlas table：The table that whole system has, it can be as the highest level form in an atlas, in reality
Now going up can be as the overall planning form of multiple databases.Itself has the reference and description information of each map.
B. chart：The table that each map has, it can as management one engineering in map highest form,
It is realized with an overall planning forms mode for database.The table has each layer reference, description and reference information.
C. map layer table：Each map layer has such a table, and it is used as one form of figure layer of management.The form has
There are the spatial object of basic figure layer and the corresponding description information of each spatial object.
D. spatial index table：Each map layer one spatial index table of correspondence, it carries out spatial analysis for assistance, to add
The speed of fast spatial analysis.
In another embodiment, the method also includes：Base attribute information and geographical position letter according to environmental sensitive area
Breath, a corresponding spatial index table is set up to each map layer table, for assisting to carry out spatial analysis, to accelerate space
The speed of analysis.
Wherein, spatial index table uses BSP tree, R trees or R+ tree constructions.
BSP tree, R trees or R+ tree constructions are the spatial indexs for dividing space from up to down, step by step.
BSP tree (Binary Space Partitioning Tree, two-dimensional space partition tree) is one kind step by step by space
The binary tree being divided into two, the distribution situation that it can be well with spatial object is adapted.And BSP tree depth is general all very big,
Influence the efficiency of various operations.
R trees are another forms that B-tree develops to hyperspace, and it is divided spatial object by scope, each node pair
A region and a disk page are answered, the regional extent of its all child node, non-leaf node are stored in the disk page of non-leaf node
The region of all child nodes all fall within its regional extent；Stored within its regional extent in the disk page of leaf node
The boundary rectangle of all spatial objects.The child node number that each node to be possessed has upper and lower limit, and lower limit ensures empty to disk
Between effective utilization, the upper limit ensures each node correspondence one disk page, but inserts the sky that new node causes certain node requirement
Between more than disk page when, the node is divided into two.R trees are a kind of dynamic indexing structures, i.e.,：Its inquiry can with insertion or
Delete is carried out simultaneously, and regularly tree construction need not be reorganized.
R+ trees are similar with R trees, and the corresponding area of space of sibling is non-overlapping in differring primarily in that R+ trees, so divide
Space eliminate R trees because allowing node between overlap " dead zone " that produces (node is in that without this node data
White space), invalid inquiry number is reduced, the efficiency of spatial index is provided significantly, but for insertion, the behaviour of deletion spatial object
Make, then to ensure that area of space is non-overlapping and efficiency is reduced by operation.R+ trees are to trans-regional space object data storage simultaneously
Have a redundancy, and with database data increase, redundancy constantly increases.
In another embodiment, the method also includes：Environmental sensitive area thematic data is utilized into raster data vector quantization side
Formula is input into server or is manually inputted into server.
Environmental sensitive area thematic data of the invention using raster data vector inputting, be manually entered two ways and carry out
Treatment.For the situation of all papery data of environmental sensitive area thematic data, this papery data cannot be used directly, it is necessary to
First carry out rasterizing operation, papery data be converted into number format, by development platform by the geographical position of all kinds of sensitizing ranges,
In the data entry systems such as border.But when rasterizing is operated, due to the problem of scanning accuracy, do not have coordinate on map in addition
Parameter, therefore, the data after rasterizing occur that border is not inconsistent and digital topography map is not matched in input system, often
A series of problems, it is necessary to by artificial means, to the sensitizing range thematic map after rasterizing, determine that several are positioned first on border
Point, is corrected according to the thematic information collected to sensitizing range border stationary point, finally realize sensitizing range information in system with
Data in thematic information can reach identical precision on same ratio chi.Meanwhile, enter in the relevant information to sensitizing range
Attribute data during row artificial correction also to each sensitizing range carries out typing, be finally completed the construction of sensitizing range database with
Correction work.
In another embodiment, middle type of ground objects according to the map, by the corresponding environment sensitive of each map layer table memory storage
The geographical location information in area is divided into node class geographical location information, segmental arc class geographical location information and polygon class geographical position
Information；Node class geographical location information is corresponding with punctual geo-objects, and segmental arc class geographical location information is corresponding with linear ground object, many
Side shape class geographical location information is corresponding with area feature.Type of ground objects can so be carried out with corresponding geographical location information
Matching, can more accurately show corresponding atural object on map.
The Object-relational Database model of environmental sensitive area data of the invention：
A. the atural object feature model of object-oriented
From geometric aspects divide map various atural objects can abstract be：Punctual geo-objects, linear ground object, area feature and mixed
Close the complicated atural object for constituting.Then map M can simply be expressed as node class, segmental arc class, polygon class with the mode of object-oriented.
B. the attribute data model of object-oriented
On the basis of relation DBMS, increase the functions such as encapsulation, succession and the Information Communication of object oriented data model.
C. topological relation and object oriented programming model
Adjacent, incidence relation between usual atural object can be implied by the data sharing of common node, public segmental arc
Expression.
In traditional map making system, typically deposit figure and attribute data are completely separable hereof, but
As graph data amount is increasingly huge, the especially requirement of map data sets management and service has made this separation management
The need for current map data management can not be met.
Compared with file system management, database of the invention has advantages below：Retrieval capability is high, easily realize data
Safety management, data integrity inspection, con current control, data sharing, the integrated management of figure and attribute data, additionally it is possible to
Operating system is closely integrated.
The present embodiment is by the environmental sensitive area thematic data of acquisition and stores to ground chart；Over the ground in chart each again
A unique ID is distributed in environmental sensitive area, and respective environment sensitizing range thematic data is associated with ID；It is quick according to environment
Ground chart is divided into the quantity of sensillary area the map layer table of equal number number, each map layer table be associated with an ID and
One environmental sensitive area of correspondence, finally constructs environmental sensitive area database；It is quick that each map layer table internal memory contains correspondence environment
The base attribute information and geographical location information of sensillary area, and per map layer table in data be used for after client call showing it is corresponding
The cartographic information of environmental sensitive area；The environmental sensitive area database of structure cover environmentally sensitive areas distribution can real-time update with
And expand；By the consistency operation of system, all geography information, environmental sensitive area data can be entered with the operation such as edlin, increase and decrease,
By setting up multistage auditing mechanism, database data can be made to be upgraded in time, in time reflection Around actual conditions, more preferably
Be engineering feasibility study, planning evaluation service.
Fig. 2 is a kind of server architecture figure for building the environmental sensitive area database based on generalized information system of the invention.
The server of the environmental sensitive area database based on generalized information system is built as shown in Figure 2, including：
Data memory module, it is used to obtain environmental sensitive area thematic data and store to ground chart；The environment is quick
Sensillary area thematic data includes the base attribute information of environmental sensitive area and the geography of the environmental sensitive area detected by generalized information system
Positional information；Wherein, the rank of the base attribute information of environmental sensitive area including environmental sensitive area, membership setup time and
Protection object information；
A unique ID is distributed in ID distribute modules, each environmental sensitive area that it is used in chart over the ground, and will be corresponding
Environmental sensitive area thematic data is associated with ID；
Map layer table builds module, and it is used to the quantity according to environmental sensitive area ground chart is divided into equal number
Several map layer tables, each map layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environment quick
Sensillary area database；Each map layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and
Data are used for showing the cartographic information of respective environment sensitizing range after client call in per map layer table.
In one embodiment, the server also includes：Spatial index table sets up module, and it is used for according to environment sensitive
The base attribute information and geographical location information in area, a corresponding spatial index table is set up to each map layer table, is used
In assisting to carry out spatial analysis, to accelerate the speed of spatial analysis.
Wherein, the spatial index table that spatial index table is set up in module uses BSP tree, R trees or R+ tree constructions.
BSP tree, R trees or R+ tree constructions are the spatial indexs for dividing space from up to down, step by step.
BSP tree (Binary Space Partitioning Tree, two-dimensional space partition tree) is one kind step by step by space
The binary tree being divided into two, the distribution situation that it can be well with spatial object is adapted.And BSP tree depth is general all very big,
Influence the efficiency of various operations.
R trees are another forms that B-tree develops to hyperspace, and it is divided spatial object by scope, each node pair
A region and a disk page are answered, the regional extent of its all child node, non-leaf node are stored in the disk page of non-leaf node
The region of all child nodes all fall within its regional extent；Stored within its regional extent in the disk page of leaf node
The boundary rectangle of all spatial objects.The child node number that each node to be possessed has upper and lower limit, and lower limit ensures empty to disk
Between effective utilization, the upper limit ensures each node correspondence one disk page, but inserts the sky that new node causes certain node requirement
Between more than disk page when, the node is divided into two.R trees are a kind of dynamic indexing structures, i.e.,：Its inquiry can with insertion or
Delete is carried out simultaneously, and regularly tree construction need not be reorganized.
R+ trees are similar with R trees, and the corresponding area of space of sibling is non-overlapping in differring primarily in that R+ trees, so divide
Space eliminate R trees because allowing node between overlap " dead zone " that produces (node is in that without this node data
White space), invalid inquiry number is reduced, the efficiency of spatial index is provided significantly, but for insertion, the behaviour of deletion spatial object
Make, then to ensure that area of space is non-overlapping and efficiency is reduced by operation.R+ trees are to trans-regional space object data storage simultaneously
Have a redundancy, and with database data increase, redundancy constantly increases.
In one embodiment, the server also includes：Data input module, it is used for environmental sensitive area special topic number
It is input into server or is manually inputted into server according to using raster data vector quantization mode.
Environmental sensitive area thematic data of the invention using raster data vector inputting, be manually entered two ways and carry out
Treatment.For the situation of all papery data of environmental sensitive area thematic data, this papery data cannot be used directly, it is necessary to
First carry out rasterizing operation, papery data be converted into number format, by development platform by the geographical position of all kinds of sensitizing ranges,
In the data entry systems such as border.But when rasterizing is operated, due to the problem of scanning accuracy, do not have coordinate on map in addition
Parameter, therefore, the data after rasterizing occur that border is not inconsistent and digital topography map is not matched in input system, often
A series of problems, it is necessary to by artificial means, to the sensitizing range thematic map after rasterizing, determine that several are positioned first on border
Point, is corrected according to the thematic information collected to sensitizing range border stationary point, finally realize sensitizing range information in system with
Data in thematic information can reach identical precision on same ratio chi.Meanwhile, enter in the relevant information to sensitizing range
Attribute data during row artificial correction also to each sensitizing range carries out typing, be finally completed the construction of sensitizing range database with
Correction work.
In one embodiment, the server also includes：Geographical location information sort module, during it is used for according to the map
Type of ground objects, node class geography position is divided into by the geographical location information of the corresponding environmental sensitive area of each map layer table memory storage
Confidence breath, segmental arc class geographical location information and polygon class geographical location information；Node class geographical location information and punctual geo-objects
Corresponding, segmental arc class geographical location information is corresponding with linear ground object, and polygon class geographical location information is relative with area feature
Should.Type of ground objects can so be matched with corresponding geographical location information, phase can be more accurately shown on map
The atural object answered.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. a kind of environmental sensitive area database construction method based on generalized information system, it is characterised in that the method is complete in server
Into it is specifically included：
Step 1：Obtain environmental sensitive area thematic data and store to ground chart；The environmental sensitive area thematic data includes ring
The base attribute information of border sensitizing range and the geographical location information of the environmental sensitive area detected by generalized information system；Wherein, environment
The base attribute information of sensitizing range includes rank, membership setup time and the protection object information of environmental sensitive area；
Step 2：A unique ID is distributed in each environmental sensitive area in chart over the ground, and by the thematic number in respective environment sensitizing range
It is associated according to ID；
Step 3：Ground chart is divided into the map layer table of equal number number, each map for quantity according to environmental sensitive area
Layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environmental sensitive area database；Each map layer
Table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and per map layer table in data by client
Hold after calling for showing the cartographic information of respective environment sensitizing range.
2. a kind of environmental sensitive area database construction method based on generalized information system as claimed in claim 1, it is characterised in that
The method also includes：Base attribute information and geographical location information according to environmental sensitive area, one is set up to each map layer table
Individual corresponding spatial index table, for assisting to carry out spatial analysis, to accelerate the speed of spatial analysis.
3. a kind of environmental sensitive area database construction method based on generalized information system as claimed in claim 1, it is characterised in that
Environmental sensitive area thematic data is input into server or is manually inputted into server using raster data vector quantization mode.
4. a kind of environmental sensitive area database construction method based on generalized information system as claimed in claim 1, it is characterised in that
Middle type of ground objects, section is divided into by the geographical location information of the corresponding environmental sensitive area of each map layer table memory storage according to the map
Point class geographical location information, segmental arc class geographical location information and polygon class geographical location information；Node class geographical location information
Corresponding with punctual geo-objects, segmental arc class geographical location information is corresponding with linear ground object, polygon class geographical location information and face
Shape atural object is corresponding.
5. a kind of environmental sensitive area database construction method based on generalized information system as claimed in claim 2, it is characterised in that
The spatial index table uses BSP tree, R trees or R+ tree constructions.
6. a kind of structure is based on the server of the environmental sensitive area database of generalized information system, it is characterised in that including：
Data memory module, it is used to obtain environmental sensitive area thematic data and store to ground chart；The environmental sensitive area
Thematic data includes the base attribute information of environmental sensitive area and the geographical position of the environmental sensitive area detected by generalized information system
Information；Wherein, the base attribute information of environmental sensitive area includes rank, membership setup time and the protection of environmental sensitive area
Object information；
A unique ID is distributed in ID distribute modules, each environmental sensitive area that it is used in chart over the ground, and by respective environment
Sensitizing range thematic data is associated with ID；
Map layer table builds module, and it is used to the quantity according to environmental sensitive area ground chart is divided into equal number number
Map layer table, each map layer table is associated and a corresponding environmental sensitive area with an ID, finally constructs environmental sensitive area
Database；Each map layer table internal memory contains the base attribute information and geographical location information of correspondence environmental sensitive area, and per ground
Data are used for showing the cartographic information of respective environment sensitizing range after client call in figure layer table.
7. server as claimed in claim 6, it is characterised in that the server also includes：Spatial index table sets up module,
It is used for base attribute information and geographical location information according to environmental sensitive area, each map layer table is set up one it is right with it
The spatial index table answered, for assisting to carry out spatial analysis, to accelerate the speed of spatial analysis.
8. server as claimed in claim 6, it is characterised in that the server also includes：Data input module, it is used for
Environmental sensitive area thematic data is input into server or is manually inputted into server using raster data vector quantization mode.
9. server as claimed in claim 6, it is characterised in that the server also includes：Geographical location information classification mould
Block, it is used for middle type of ground objects according to the map, and the geographical position of the corresponding environmental sensitive area of each map layer table memory storage is believed
Breath is divided into node class geographical location information, segmental arc class geographical location information and polygon class geographical location information；Node class ground
Reason positional information is corresponding with punctual geo-objects, and segmental arc class geographical location information is corresponding with linear ground object, polygon class geography position
Confidence breath is corresponding with area feature.
10. server as claimed in claim 7, it is characterised in that the spatial index that the spatial index table is set up in module
Table uses BSP tree, R trees or R+ tree constructions.
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