CN108665163A - Serve the ecological functions comprehensive estimation method of primary function area - Google Patents
Serve the ecological functions comprehensive estimation method of primary function area Download PDFInfo
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Abstract
The present invention provides a kind of ecological functions comprehensive estimation method for serving primary function area, which is characterized in that including:Step 1. structure serves the level Four index system of the ecological functions comprehensive assessment of primary function area;Step 2. collects basic data related with level Four index system using assessment unit as basic unit, builds the basic database of ecological functions comprehensive assessment;Step 3. determines the threshold value of all evaluation indexes using the evaluation index data of long series;Step 4. is standardized evaluation index data based on threshold value, obtains new data matrix after data normalization;Step 5. calculates the weight of each evaluation index;Data matrix new after standardization and each index weights are weighted summation by step 6., calculate the Index of ecological function of each assessment unit;Step 7. assesses national county domain level ecological functions according to Index of ecological function result of calculation.
Description
Technical field
The invention belongs to ecological environmental protection, space planning fields, and in particular to a kind of life for serving primary function area
State function synthesized appraisal procedure.
Technical background
《National main functionality section planning》By China's National land space:By development scheme, it is divided into Optimal Development region, emphasis is opened
Send out region, Limit exploitation region and non-development zones region;By exploitation content, it is divided into UrbaniZed Area, the main production districts off farm products and again
Point eco-functional regionalization.
Optimal development zones will optimize ecosystem pattern, using recovery ecology, environmental protection as the binding character that must be realized
Target;Key zones for development will preserve the ecological environment, and carry out ecological environmental protection planning in advance, reduce industrialization urbanization to ecology
The influence of environment avoids the occurrence of the problems such as soil excessively occupies, water resource is excessively developed and eco-environmental pressure is excessive, makes great efforts to carry
High environmental quality;The main production districts off farm products will protect ecology using enhancing overall productivity in agriculture as top priority;
Emphasis eco-functional regionalization must enhance Ecosystem Service, improve life using enhancing ecological product production capacity as top priority
State environmental quality mitigates pressure of the population to ecological environment.As it can be seen that optimal development zones, key zones for development, the main production districts off farm products and
The major function localization of emphasis eco-functional regionalization and the requirement of ecological protection have differences.
The consistency for how precisely assessing all kinds of primary function area functional localizations and its practical ecological functions, is scientific quantification
Ecological safety strategy pattern and primary function area build effect, actively promote primary function area strategic objective and are able to ensure realization
Key, and implement Ecological Civilization Construction and promote effective strategic system of China human mortality, economy and resource environment coordinated development
Important measure.However but lack all kinds of primary function area functional localizations of Scientific evaluation and its practical ecological functions in the prior art
The methods and techniques of consistency.
Invention content
The purpose of the present invention is to provide a kind of ecological functions comprehensive estimation method for serving primary function area, Neng Gouyou
Effect serves primary function area ecological functions comprehensive assessment, and pushes the realization of primary function area strategic objective, promotes space equal
Weighing apparatus development.
The present invention to achieve the goals above, uses following scheme:
The present invention provides a kind of ecological functions comprehensive estimation method for serving primary function area, which is characterized in that including
Following steps:
Step 1. builds comprehensive assessment index system
It is based on《National main functionality section planning》To Optimal Development region, priority programs, Limit exploitation region and taboo
Only four major class primary function area of developing zone in county domain level precisely landing about the positioning of ecology, development philosophy, strategic mesh
Mark and developing direction, structure serve 4 grades of index systems of ecological functions comprehensive assessment of primary function area;Structure serves main body
The level Four index system of the ecological functions comprehensive assessment of functional areas:First order index is ecological functions;Second level index includes:It is raw
State product, ecological space, population;Third level index includes successively accordingly:The ecological value, ecological space and mining inetesity, people
Mouth density;Fourth stage index includes successively accordingly:Forest land, water surface area, wetland, arable land, construction land, does not utilize meadow
Ground, forest land, meadow, waters, wetland, wild grass ground, sand ground, salt-soda soil, desert, construction land area, administrative area area, permanent people
Mouth, administrative area area;
Step 2. builds basic database
Using assessment unit as basic unit, collect social economy, population, land use these with level Four index system
Related basic data forms raw data matrix Xij, i represents assessment unit, and j represents evaluation index, and structure ecological functions are comprehensive
Close the basic database of assessment;
The basic database of the ecological functions comprehensive assessment built in this step specifically includes the permanent resident population being collected into, row
Administrative division area, forest land, meadow, water surface area, wetland, arable land, wild grass ground, sand ground, salt-soda soil, desert, construction land and not sharp
The data of land used;
Step 3. determines metrics-thresholds
Utilize the evaluation index X of long seriesijData, using big data computational methods, the prediction ecological value, ecological space,
The development trend of mining inetesity and the density of population in certain time scale determines each evaluation index XjThreshold value (maximum value, most
Small value);
The processing of step 4. data normalization
Evaluation index has different dimensional units, and nondimensional standardization, the standardization of data need to be carried out to it
(normalization) it is to be allowed to data bi-directional scaling to fall into a small specific sections:Based on each index XjThreshold value
(maximum value, minimum value) is to raw data matrix XijIt is standardized, obtains new data matrix after data normalization
X'ij, i represents assessment unit, and j represents evaluation index;
Step 5. parameter weight
Using the data after standardization, the weight w of each evaluation index is calculated based on Information Entropyj;
Step 6. builds Integrated Evaluation Model
Using multi index evaluation method by data matrix X' new after standardizationijWith each index weights wjAdded
Power summation, builds ecological functions Integrated Evaluation Model, and obtain the Index of ecological function F for calculating each assessment uniti;
Step 7. assesses ecological functions
According to Index of ecological function result of calculation, comprehensive assessment whole nation county domain level ecological functions;Form a set of whole nation system
One ecological functions comprehensive assessment system, the evaluation system can be applied to the ecological functions of any time whole nation county domain level
Comprehensive assessment.
Further, in the ecological functions comprehensive estimation method provided by the invention for serving primary function area, in step 4
In, the method for standardization is:
The positive index that value is the bigger the better is handled using following formula:
It is handled using following formula for being worth the smaller the better negative sense index:
In formula, XijIndicate the actual value of i-th of assessment unit jth item index;XminAnd XmaxBasis in step 3 is indicated respectively
Development trend in certain time scale, and the minimum value and maximum value of the index determined;X'ijIndicate the index after standardization
Value, value is between 0~1;In order to make the distribution of standardized value gather as far as possible, enhance the validity of data, original
Parameter f is introduced in Information Entropy formulaaAnd fb, wherein faTo standardize minimum value, fbTo standardize maximum value, in practical operation,
faAnd fbIt can be by adjusting ginseng to determine.
Ecological functions comprehensive assessment index is divided into positive index and negative sense index, positve term index value it is bigger to ecological functions more
Favorably, negatively correlated index value is smaller more advantageous to ecological functions.In ecological functions comprehensive assessment, the selected ecological value (habitat
Performance figure) and ecological space be positive index, the density of population and mining inetesity are negative sense index.
Further, in the ecological functions comprehensive estimation method provided by the invention for serving primary function area, in step 5
In, index weights wjComputational methods be:
Step 5-1. calculates the proportion of i-th of unit jth item index value:
Step 5-2. parameter comentropies:
Step 5-3. calculates comentropy redundancy:
dj=1-ej (6)
Step 5-4. parameter weights:
∑wj=1 (8)
In formula, X'ijIndicate the initial data standardized value of i-th of assessment unit jth item index, YijIndicate i-th of assessment
The proportion of unit jth item index value;M indicates assessment unit number;ejIndicate the indication information entropy (information entrained by one group of data
Amount, information content is bigger, and comentropy is higher);djIndicate that (information content entrained by data is less than data itself to comentropy redundancy
The data redundancy then reflected);N is index number;wjIndicate jth item index weights.
Further, the ecological functions comprehensive estimation method provided by the invention for serving primary function area, in step 6
The calculation formula of Index of ecological function is:
In formula, FiFor the Index of ecological function of i-th of assessment unit;x′ijFor the index of i-th assessment unit jth item
Initial data standardized value;wjThe weighted value for the index that participates in evaluation and electing for jth item;N is index number.
Further, the ecological functions comprehensive estimation method provided by the invention for serving primary function area, can also have
There are following characteristics:In step 7 according to Index of ecological function result of calculation, in conjunction with the practical county domain level ecological functions shape in the whole nation
Condition formulates ecological functions Pyatyi scoping rules, ecological functions is divided into quinary area:The Index of ecological function F in first order areai≥
75, illustrate that the ecological functions of assessment unit are high;The Index of ecological function F in second level areaiFor:75 > Fi>=55, illustrate assessment unit
Ecological functions it is higher;The Index of ecological function F in third level areaiFor:55 > Fi>=35, in the ecological functions for illustrating assessment unit
Deng;The Index of ecological function F in fourth stage areaiFor:35 > Fi>=20, illustrate that the ecological functions of assessment unit are relatively low;Level V area
Index of ecological function Fi< 20 illustrates that the ecological functions of assessment unit are low.
Refer to the Index of ecological function for calculating gained according to each district in the whole nation, in conjunction with the Pyatyi evaluation criteria of division, can be obtained
The subregion grade in each district, counts district number in different subregions grade, is finally completed and comments the synthesis of national ecological functions
Estimate.
The effect of invention
The ecological functions comprehensive estimation method provided by the present invention for serving primary function area, structure serve main body work(
The ecological functions comprehensive assessment level Four index system in energy area collects basic data and builds basic database, based on Information Entropy and greatly
Data algorithm determines the threshold value and power of each index of national county's domain level by analyzing each metric history data and future developing trend
Weight establishes Integrated Evaluation Model, calculates national county domain level Index of ecological function, is combined according to Index of ecological function result of calculation
The national practical ecological functions situation in county domain, it is final to obtain each district ecological functions grade subregion in the whole nation, carry out national county domain level
Ecological functions comprehensive assessment.This method can fully demonstrate the unbalanced of each department natural resources natural endowment difference and ecological functions
Property, each district ecological functions in cities and towns, agricultural and ecological three classes spatial framework are precisely assessed, while also can each district of scientific evaluation
Primary function area builds effect, helps to realize scientific and reasonable spatial planning system, and primary function area strategy pattern is pushed to exist
County domain level is precisely landed.
Description of the drawings
Fig. 1 is the flow of the ecological functions comprehensive estimation method for serving primary function area involved by the embodiment of the present invention
Figure;
Fig. 2 is the signal of each district ecological functions comprehensive evaluation result in the whole nation in 2009 involved by the embodiment of the present invention
Figure;
Fig. 3 is the signal of each district ecological functions comprehensive evaluation result in the whole nation in 2012 involved by the embodiment of the present invention
Figure;
Fig. 4 is the signal of each district ecological functions comprehensive evaluation result in the whole nation in 2015 involved by the embodiment of the present invention
Figure.
Specific implementation mode
Below in conjunction with attached drawing to the tool of the ecological functions comprehensive estimation method of the present invention for serving primary function area
Body embodiment is described in detail.
<Embodiment>
As shown in Figure 1, the ecological functions comprehensive estimation method packet for serving primary function area that the present embodiment is provided
Include following steps:
Step 1. builds comprehensive assessment index system
Foundation《National main functionality section planning》(hereinafter referred to as《Planning》) to Optimal Development region, priority programs,
Limit exploitation region and four major class primary function area of non-development zones region in county domain level precisely landing about the positioning of ecology,
Development philosophy, strategic objective, developing direction etc., specially:Optimal development zones will optimize ecosystem pattern, recovery is ecological,
Environmental protection is as the restrictive target that must be realized;Key zones for development will preserve the ecological environment, and carry out ecological environment guarantor in advance
Shield planning reduces influence of the industrialization urbanization to ecological environment, avoid the occurrence of that soil excessively occupies, water resource is excessively developed and
The problems such as eco-environmental pressure is excessive makes great efforts to improve environmental quality;The main production districts off farm products are enhancing overall productivity in agriculture
As top priority, while to protect ecology;It emphasis eco-functional regionalization must be using enhancing ecological product production capacity as head
Task is wanted, Ecosystem Service is enhanced, quality of improving the ecological environment mitigates pressure of the population to ecological environment.
Based on the requirement of above positioning, development philosophy, strategic objective, developing direction etc., structure one kind serving main body work(
4 grades of comprehensive assessment index systems of ecological functions comprehensive assessment in energy area, as shown in table 1 below.Ecological functions are ecological product and life
The concentrated expression of state space, in addition, population is also an important factor for influencing ecological functions.Ecological product refer to maintain ecological safety,
The physical features for ensureing Ecological regulation services, good living environment being provided, including pure and fresh air, clean water source and pleasant
Weather etc. can be quantified with the ecological value;What ecological space was referred to required for certain species in macroeconomic stability state or was occupied
Environment summation further spreads out as ecological space and mining inetesity;Population is weighed using the density of population of permanent resident population.
Table 1 serves the ecological functions level Four comprehensive assessment index system of primary function area
Wherein, the ecological value with《State of ecological environment assessment technology specification (tentative)》Habitat matter in (HJ 192-2015)
Volume index is calculated, habitat quality index=Abio× (0.35 × forest land+0.21 × meadow+0.28 × Wetland Area+0.11
× arable land+0.04 × construction land+0.01 × unused land)/region area, A in formulabioFor the normalization of habitat performance figure
Coefficient;Ecological space includes meadow, forest land, wetland, waters, wild grass ground, desert and salt-soda soil;Mining inetesity refers to a region and builds
If space accounts for the ratio of the region gross area;The density of population refers to the population of unit area.
Step 2. builds basic database
Using administrative areas at the county level as basic unit, monitoring and collection social economy related with level Four index system, soil profit
With, population-based data, raw data matrix X is formedij, i represents assessment unit, and j represents evaluation index, and structure ecological functions are comprehensive
Close the basic database of assessment;
The basic database of the ecological functions comprehensive assessment built in this step specifically includes the permanent resident population being collected into, row
Administrative division area, forest land, meadow, water surface area, wetland, arable land, wild grass ground, sand ground, salt-soda soil, desert, construction land and not sharp
The data of land used.
Step 3. determines metrics-thresholds
Utilize the evaluation index X of long seriesjData, using big data computational methods, analysis ecological product, ecological space and
The density of population, the development trend of the prediction ecological value, ecological space, mining inetesity and the density of population in certain time scale,
Determine all evaluation index XjThreshold value (maximum value, minimum value);
The processing of step 4. data normalization
Evaluation index has different dimensional units, and nondimensional standardization, the standardization of data need to be carried out to it
(normalization) it is to be allowed to data bi-directional scaling to fall into a small specific sections;Utilize XjThreshold value to assessment
Achievement data is standardized, and obtains new data matrix X' after data normalizationij;Specifically, standardization
Method is:
The positive index that value is the bigger the better is handled using following formula:
It is handled using following formula for being worth the smaller the better negative sense index:
In formula, XijIndicate i-th of assessment unit jth item index value;XminAnd XmaxIt indicates respectively in step 3 according to a timing
Between development trend in scale, and the minimum value and maximum value of the index determined;X'ijIndicate the index value after standardization, value
Between 0~1;In order to make the distribution of standardized value gather as far as possible, enhance the validity of data, in original Information Entropy public affairs
Parameter f is introduced in formulaaAnd fb, wherein faTo standardize minimum value, fbTo standardize maximum value, in practical operation, faAnd fbIt can
By adjusting ginseng to determine.
Ecological functions comprehensive assessment index is divided into positive index and negative sense index, positve term index value it is bigger to ecological functions more
Favorably, negatively correlated index value is smaller more advantageous to ecological functions.In ecological functions comprehensive assessment, the selected ecological value (habitat
Performance figure) and ecological space be positive index, the density of population and mining inetesity are negative sense index.
Step 5. parameter weight
Using the data after standardization, the weight w of each evaluation index is calculated using Information Entropyj, make wjMeet formula ∑ wj=1;
Index weights wjComputational methods be:
Step 5-1. calculates the proportion of i-th of unit jth item index value:
Step 5-2. parameter comentropies:
Step 5-3. calculates comentropy redundancy:
dj=1-ej(6)
Step 5-4. parameter weights:
∑wj=1 (8)
In formula, YijIndicate the proportion of i-th of assessment unit jth item index value;M indicates assessment unit number;ejExpression refers to
Mark comentropy (information content entrained by one group of data, information content is bigger, and comentropy is higher);djIndicate that comentropy redundancy (works as number
It is less than the data redundancy that data itself then reflect according to entrained information content);N is index number;wjIndicate jth item index
Weight.
Step 6. calculates Index of ecological function
Using multi index evaluation method by data matrix X' new after standardizationijWith each index weights wjAdded
Power summation, calculates the Index of ecological function F of each assessment uniti, calculation formula is:
In formula, FiFor the Index of ecological function of i-th of assessment unit;x′ijFor the index of i-th assessment unit jth item
Initial data standardized value;wjThe weighted value for the index that participates in evaluation and electing for jth item;N is index number.
Step 7. assesses ecological functions
According to Index of ecological function result of calculation, comprehensive assessment whole nation county domain level ecological functions.Form a set of whole nation system
One ecological functions comprehensive assessment system, the evaluation system can be applied to the ecological functions of any time whole nation county domain level
Comprehensive assessment.
Specifically, it is that ecological functions are divided into 5 grades of areas according to Index of ecological function result of calculation in this step:Such as
Shown in following table 2, the Index of ecological function F in first order areai>=75, illustrate that the ecological functions of assessment unit are high;Second level area
Index of ecological function FiFor:75 > Fi>=55, illustrate that the ecological functions of assessment unit are higher;The Index of ecological function in third level area
FiFor:55 > Fi>=35, illustrate that the ecological functions of assessment unit are medium;The Index of ecological function F in fourth stage areaiFor:35 > Fi≥
20, illustrate that the ecological functions of assessment unit are relatively low;The Index of ecological function F in level V areai< 20 illustrates the ecology of assessment unit
Function is low
Table 2 serves the ecological functions Pyatyi subregion of primary function area
The Index of ecological function that gained is calculated according to each district in the whole nation can be obtained every in conjunction with the Pyatyi evaluation criteria of division
The subregion grade in a district counts district number in different subregions grade, is finally completed the comprehensive assessment to national ecological functions.
Based on above-mentioned appraisal procedure, 2009,2012 and 2015 national county domain level ecological functions are assessed,
Different subregions section district number is counted, evaluation result is as shown in Figures 2 to 4, as we know from the figure:2009,2012 and 2015
Three-level district proportion is respectively 83.01%, 74.88% and 75.48% before year national ecological functions, and 2009~2012 years complete
State's ecological functions are declined, and by 2015, national state of ecological environment was promoted compared with 2012.Since China was in 2009
" 4,000,000,000,000 plan " and " ten big industry development plans " are proposed in succession, are mainly focused on investment demand to economic pulling, greatly
Part financial fund has put into infrastructure construction, generates immense pressure to China's ecological environment, leads to China's ecological environment
Entire lowering;Since the Party Central Committee in 2012 proposes Ecological Civilization Construction, preserved the ecological environment with stringent structure of the law, it is firm
Subject of implementation functional areas strategy and system are not moved, and effective standard space exploitation order rationally controls space development intensity, ecological ring
Border pressure is effectively relieved.
Above example is only the illustration done to technical solution of the present invention.It is according to the present invention to serve master
The ecological functions comprehensive estimation method in body function area is not merely defined in described content in the embodiment above, but with
Subject to claim limited range.What those skilled in the art of the invention were done on the basis of the embodiment any repaiies
Change or supplement or equivalence replacement, all in the claim range claimed of the present invention.
Claims (5)
1. a kind of ecological functions comprehensive estimation method for serving primary function area, which is characterized in that include the following steps:
Step 1. builds comprehensive assessment index system
Structure serves the level Four index system of the ecological functions comprehensive assessment of primary function area:First order index is ecological work(
Energy;Second level index includes:Ecological product, ecological space, population;Third level index includes successively accordingly:The ecological value, it is raw
State space and mining inetesity, the density of population;Fourth stage index includes successively accordingly:Forest land, water surface area, wetland, is ploughed meadow
Ground, construction land, unused land, forest land, meadow, waters, wetland, wild grass ground, sand ground, salt-soda soil, desert, construction land face
Product, administrative area area, permanent resident population, administrative area area;
Step 2. builds basic database
Using assessment unit as basic unit, basic data related with level Four index system is collected, forms raw data matrix Xij,
I represents assessment unit, and j represents evaluation index, builds the basic database of ecological functions comprehensive assessment;
Step 3. determines metrics-thresholds
Utilize the X of long seriesijData analyze going through for ecological product, ecological space and the density of population using big data computational methods
History data and future developing trend determine each evaluation index XjThreshold value;
The processing of step 4. data normalization
Based on each index XjThreshold value to raw data matrix XijIt is standardized, obtains new number after data normalization
According to matrix X'ij;
Step 5. parameter weight
Using the data after standardization, the weight w of each evaluation index is calculatedj;
Step 6. builds Integrated Evaluation Model
By data matrix X' new after standardizationijWith each index weights wjIt is weighted summation, structure ecological functions synthesis
Assessment models, and obtain the Index of ecological function F of each assessment uniti;
Step 7. assesses ecological functions
According to Index of ecological function result of calculation, national county domain level ecological functions are assessed.
2. the ecological functions comprehensive estimation method according to claim 1 for serving primary function area, it is characterised in that:
Wherein, in step 4, the method for standardization is:
The positive index that value is the bigger the better is handled using following formula:
It is handled using following formula for being worth the smaller the better negative sense index:
In formula, XijIndicate the actual value of i-th of assessment unit jth item index;XminAnd XmaxThe minimum of metrics-thresholds is corresponded to respectively
Value and maximum value;X'ijI-th of assessment unit jth item index initial data standardized value, value is between 0~1;faFor mark
Standardization minimum value, fbTo standardize maximum value.
3. the ecological functions comprehensive estimation method according to claim 1 for serving primary function area, it is characterised in that:
Wherein, in steps of 5, index weights wjComputational methods be:
Step 5-1. calculates the proportion of i-th of unit jth item index value:
Step 5-2. parameter comentropies:
Step 5-3. calculates comentropy redundancy:
dj=1-ej (6)
Step 5-4. parameter weights:
∑wj=1 (8)
In formula, X'ijIndicate i-th of assessment unit jth item index initial data standardized value, YijIndicate i-th of assessment unit jth
The proportion of item index value;M indicates assessment unit number;ejIndicate indication information entropy;djIndicate comentropy redundancy;N is index
Number;wjIndicate jth item index weights.
4. the ecological functions comprehensive estimation method according to claim 1 for serving primary function area, it is characterised in that:
Wherein, the calculation formula of Index of ecological function is in step 6:
In formula, FiFor the Index of ecological function of i-th of assessment unit;x′ijFor the index original number of i-th of assessment unit jth item
According to standardized value;wjThe weighted value for the index that participates in evaluation and electing for jth item;N is index number.
5. the ecological functions comprehensive estimation method according to claim 1 for serving primary function area, it is characterised in that:
Wherein, ecological functions are divided into quinary area according to Index of ecological function result of calculation in step 7:First order area
Index of ecological function Fi>=75, illustrate that the ecological functions of assessment unit are high;The Index of ecological function F in second level areaiFor:75 > Fi
>=55, illustrate that the ecological functions of assessment unit are higher;The Index of ecological function F in third level areaiFor:55 > Fi>=35, illustrate to assess
The ecological functions of unit are medium;The Index of ecological function F in fourth stage areaiFor:35 > Fi>=20, illustrate the ecological work(of assessment unit
It can be relatively low;The Index of ecological function F in level V areai< 20 illustrates that the ecological functions of assessment unit are low.
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CN111582689A (en) * | 2020-04-27 | 2020-08-25 | 生态环境部南京环境科学研究所 | Evaluation method and system for ecological protection red line protection effect |
CN111582689B (en) * | 2020-04-27 | 2024-03-01 | 生态环境部南京环境科学研究所 | Evaluation method and system for ecological protection red line protection effect |
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