CN111191929A - Evaluation method for water conservancy photography creation base - Google Patents
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Abstract
The invention discloses a water conservancy photography creation base evaluation method, which comprises the following steps of S1: determining the definition of the water conservancy photography creation base, and constructing an evaluation index group of the water conservancy photography creation base; s2: weighting the evaluation index group by adopting a weight compromise coefficient method to obtain the weight value of each evaluation index in the evaluation index group; s3: and carrying out fuzzy comprehensive evaluation calculation according to the weight values of the evaluation indexes to obtain evaluation values of different Chinese water conservancy photography creation bases, so as to realize evaluation of different water conservancy photography creation bases. The method can evaluate the water conservancy photography creation base more simply, conveniently and accurately, provides corresponding technical support for scientific protection, reasonable development, perpetual utilization and sustainable development of the Chinese water conservancy photography creation base, and fills the blank of the existing evaluation method of the water conservancy photography creation base. Has important significance for the propagation and the inheritance of Chinese water culture, the improvement of the thought and moral quality of the whole nation and the scientific culture quality and the improvement of the national culture soft strength.
Description
Technical Field
The invention relates to an evaluation method of a water conservancy photography creation base.
Background
In order to implement 'water conservancy project shortening board and water conservancy industry strong supervision' new era water conservancy reform development general basic tone, carry forward new era water conservancy spirit, promote water conservancy industry culture confidence and water ecological civilization construction, promote the flourishing development of water conservancy photographic industry, discover and cultivate excellent photographic creation base of a water conservancy system, promote the vigorous development of mass photographic activities of the water conservancy system, show abundant and excellent photographic resources of the water conservancy system, improve social influence and economic foundation of water conservancy basic unit, transmit water conservancy sound, speak good water conservancy story, show water conservancy and literature and employment, Chinese water conservancy and literature art association in 2019, the hydrographic association starts the evaluation and management work of the Chinese hydrographic creation base, compiles the management method of the Chinese hydrographic creation base, and lays theoretical support and practical foundation for the compilation and the issuance of the subsequent evaluation standard of the Chinese hydrographic creation base.
The water conservancy photography creation base field relates to abundant elements, various systems, system characteristics and mutual correlation are complicated, the characteristics of all subsystems forming a comprehensive evaluation system of the water conservancy photography creation base need to be fully considered when an index construction system is selected, and the attributes of all angles of the water conservancy photography creation base system can be comprehensively evaluated. Therefore, the evaluation criteria and the method for comparing and optimizing the comprehensive evaluation system of the water conservancy photography creation base become the hotspots and difficulties of the current research. The index system is the basis of comprehensive evaluation, and the establishment of a reasonable index system is a precondition that the evaluation result has scientificity and reliability. The complex influence factors cause that the comprehensive evaluation system of the Chinese water conservancy photography creation base has numerous evaluation indexes, and subjective and objective indexes coexist, so that a uniform standard is difficult to form, and the accuracy of an evaluation result is difficult to ensure. A reasonable and unified evaluation index system is established, and a comprehensive evaluation technology related to multiple dimensions such as schemes, indexes, time and the like is required to be provided according to the characteristics of the comprehensive evaluation system of the water conservancy photography creation base.
The evaluation method in the construction of the water conservancy scenic spot generally comprises a literature method, a field investigation method, an interview method, a fuzzy mathematical method, a sorting and induction method and the like; the research on the hydrographic creation base is still in the preliminary stage, and the evaluation on the hydrographic creation base is still in the blank stage.
However, there are many problems in the existing evaluation research of the water conservancy photography creation base: (1) the existing evaluation index systems are often not strong in universality, for example, some index systems are only suitable for a water conservancy photography creation base in a specific area; the indexes are too many, and strong correlation exists between the indexes, so that too many useless indexes exist in the evaluation of the water conservancy photography creation base, and the waste and the incomplete coverage of the indexes are caused. (2) A relatively perfect water conservancy photography creation base value evaluation system is not formed in the prior art. At present, most of the studied objects are limited to tangible hydraulic engineering facilities, and diversified hydraulic photography creation bases are less involved.
Disclosure of Invention
The invention provides a water conservancy photography creation base evaluation method aiming at the defects in the prior art, solves the problems of low practicability and limitation in the prior art, and provides corresponding technical support for scientific protection, reasonable development, continuous utilization and sustainable development of the water conservancy photography creation base.
The technical scheme adopted by the invention is as follows:
a method for evaluating a water conservancy photography creation base comprises the following steps:
s1: determining the definition of the water conservancy photography creation base, and constructing an evaluation index group of the water conservancy photography creation base;
s2: weighting the evaluation index group by adopting a weight compromise coefficient method to obtain the weight value of each evaluation index in the evaluation index group;
s3: according to the weight values of all the evaluation indexes, carrying out fuzzy comprehensive evaluation calculation to obtain evaluation values of different Chinese hydrographic creation bases, and realizing evaluation of different hydrographic creation bases;
defining a water conservancy photography creation base: the water conservancy photography creation base is based on water conservancy landscape resources, has the characteristics of water conservancy ecology, water conservancy engineering, water conservancy culture and the like, and can be used for water conservancy literature photography enthusiasts to develop places and units for photography creation, discussion, training, display and communication activities.
In the method for evaluating the Chinese hydrographic creation base, in step S1, the construction of the evaluation index group comprises the construction of an evaluation index system and specific evaluation indexes:
s1-1: a specific evaluation index system is constructed as follows: according to the meaning of the water conservancy photography creation base, a target layer, a standard layer and an index layer of the water conservancy photography creation base are constructed (table 1).
Table 1: evaluation index system for water conservancy photography creation base
S1-2: determining an evaluation index:
the water environment condition can be obtained according to the weighted average of the comprehensive pollution index, the nutrition level index and the heavy metal index, and the biodiversity index is obtained by selecting the Shannon-Weaver diversity index. Wherein,
comprehensive pollution index:
in the formula, Ci-a measured concentration of a contaminant; si-standard values for the respective categories.
Index of nutritional level
Wherein E is the nutritional level index; cCOD(mg/L)、CIN(μg/L)、CIP(μ g/L) are actual measured values of chemical oxygen consumption, dissolved inorganic nitrogen, and active phosphate, respectively.
(3) Index of heavy metals
In the formula, AiIs the relative pollution index of the ith heavy metal; p is the comprehensive pollution index of heavy metals; ciThe measured concentration value of the ith heavy metal is obtained; c0The evaluation standard value of the ith heavy metal is shown.
(4) The biodiversity index is selected from Shannon-Weaver diversity index.
Wherein S is the total number of species in the sample, PiIs the ratio of the number of individuals in the ith species to the total number of individuals in the sample.
Other indexes are obtained by inviting 10 famous experts in domestic related fields, scoring and taking an average value.
In step S2, the contributions of different evaluation indicators to the comprehensive evaluation value of the hydrographic creation base are different, so that setting the weight value of the evaluation indicator reasonably is an important factor for determining the reliability of the evaluation result. The method of weight compromise coefficient is adopted, the subjective weight analytic hierarchy process and the objective weight entropy value process are combined to determine the weight, and the calculation precision can be conveniently and effectively improved.
The formula is as follows:
w＝(1-α)qi+αpi
wherein W is index weight of index system of water conservancy photography creation base, a is weight compromise coefficient, 0 is not less than α is not more than 1, and P is (P)1，p2，...，pn) Is a subjective weight; q ═ Q (Q)1，q2，…，qn) The analytic hierarchy process and the entropy method are all common methods for determining the weights of the indexes, and the weight compromise coefficient adopts α ═ 0.5.
The subjective weight value is determined by adopting an analytic hierarchy process, which is mainly to invite experts in the industry to score the relative importance of indexes of a criterion layer and an index layer, and then the relative importance of the indexes is calculated by using analytic hierarchy process software yaahp, and the consistency ratio of a judgment matrix is ensured to be less than 0.1 in the calculation. The method adopts an entropy method for determining the objective weight value, the general steps of the entropy method are that the standard processing, coordinate translation and calculation of index entropy and difference coefficient are carried out on index layer data, and matlab software is adopted to program an entropy method formula function to calculate and obtain a weight result.
In the water conservancy photography creation base evaluation method, in step S3, the evaluation method is as follows:
the construction evaluation of the water conservancy photography creation base has many uncertain factors, most of the evaluation indexes and the standards are in nonlinear relation, the relation is complex, and no absolute clear limit exists for the quality of the evaluation. The fuzzy problem is difficult to study by adopting an accurate mathematical method, and the real condition and the attribute of the water conservancy photography creation base cannot be well represented. The fuzzy evaluation model reasonably determines the relative membership of the sample indexes to the standard intervals of all levels of indexes by adjusting the model and the parameters thereof, can effectively solve the problem of influence of boundary fuzzy evaluation results in evaluation, and improves the reliability of the sample level evaluation. MATLAB is a set of engineering calculation software with powerful functions, the efficient and convenient matrix and array operation functions of the MATLAB can enable the MATLAB to be simple, efficient and convenient when solving digital image processing problems, the MATLAB-based fuzzy evaluation model is applied to research such as water science development and hydraulic engineering construction, and the evaluation applied to a water conservancy photography creation base is not reported yet. The fuzzy evaluation model based on matlab is applied to the evaluation of the water conservancy photography creation base, the problem of influence of a boundary fuzzy evaluation result can be efficiently and conveniently solved, the construction quality of the water conservancy photography creation base can be evaluated more objectively, quantitatively and standardly, and the evaluation result is more credible.
The fuzzy comprehensive evaluation model of the water conservancy photography creation base is constructed as follows:
(1) establishing an evaluation factor set
P＝{p1，p2，p3，…pn}
Analyzing influence factors influencing the water conservancy photography creation base, establishing an evaluation index system of the water conservancy photography creation base, and determining an evaluation index factor set P, wherein P1...pnRepresenting factors of the hydrographic creation base.
(2) Establishing an evaluation set
V＝{v1，v2，v3，...vn}
The factor P to be evaluated has v1，v2，v3，...vnAnd each evaluation v corresponds to one fuzzy subset.
(3) Establishing one-factor evaluation
Establishing a fuzzy mapping f from P to V:
f：P→F(V)
Pi→f(p)＝(ri1，ri2，...，rim)∈F(V)
from the fuzzy mapping f, the fuzzy relation R can be obtainedfe.F (P × V), i.e.:
Rf(pi，vj)＝f(pi)(vj)＝rij
wherein i is 1, 2.. times.n; j is 1, 2,. said, m; 0 < rij＜＜1。rijIndicates the evaluated factor piFor evaluation vjAnd thus a fuzzy matrix R, i.e.
Let R be a one-factor evaluation matrix.
(4) Determining weights
And determining the weight value W of each evaluation index of the water conservancy photography creation base by adopting the same weight compromise coefficient method.
(5) Comprehensive evaluation model
The compatibility of the weighted average fuzzy comprehensive evaluation model is wider, and the fuzzy comprehensive evaluation result, namely the fuzzy comprehensive evaluation result can be obtained according to the obtained weight W and the single-factor evaluation matrix R
In the results BiNamely the fuzzy evaluation index;
the fuzzy comprehensive evaluation calculation of the water conservancy photography creation base is realized by programming through Matlab10.0 software.
The invention has the beneficial technical effects that:
1. the method for evaluating the water conservancy photography creation base can evaluate the water conservancy photography creation base more simply, conveniently and accurately, provides corresponding technical support for scientific protection, reasonable development, continuous utilization and sustainable development of the Chinese water conservancy photography creation base, and fills the blank of the existing method for evaluating the water conservancy photography creation base. Has important significance for the propagation and the inheritance of Chinese water culture, the improvement of the thought and moral quality of the whole nation and the scientific culture quality and the improvement of the national culture soft strength.
2. The water conservancy photography creation base evaluation method constructs an evaluation system which can highlight the development history of water conservancy construction in China and embody the spirit of the water conservancy construction, provides an evaluation method with strong adaptability, high practicability and no limitation, and solves the problems of low practicability and limitation in the prior art.
Drawings
Fig. 1 is a schematic diagram illustrating an evaluation result of an application example of the hydrographic creation base evaluation method according to embodiment 5.
Detailed Description
Example 1
The invention relates to a water conservancy photography creation base evaluation method, which comprises the following implementation steps:
s1: determining the definition of the water conservancy photography creation base, and constructing an evaluation index group of the water conservancy photography creation base;
s2: weighting the evaluation index group by adopting a weight compromise coefficient method to obtain the weight value of each evaluation index in the evaluation index group;
s3: and carrying out fuzzy comprehensive evaluation calculation according to the weight values of the evaluation indexes to obtain evaluation values of different Chinese water conservancy photography creation bases, so as to realize evaluation of different water conservancy photography creation bases.
The invention relates to definition of a water conservancy photography creation base: the water conservancy photography creation base is based on water conservancy landscape resources, has the characteristics of water conservancy ecology, water conservancy engineering, water conservancy culture and the like, and can be used for water conservancy literature photography enthusiasts to develop places and units for photography creation, discussion, training, display and communication activities.
Example 2
The method for evaluating the water conservancy photography creation base is different from the method in the embodiment 1, and further comprises the following steps: in step S1, the construction of the evaluation index group includes the construction of an evaluation index system and the specific evaluation index:
s1-1: according to the meaning of the hydrographic creation base, an evaluation index system of the hydrographic creation base including a target layer, a criterion layer and an index layer is constructed, wherein the evaluation index system of the hydrographic creation base is shown in a table 1:
table 2: evaluation index system for water conservancy photography creation base
The following principles are followed when establishing an evaluation index system:
(1) principle of completeness
The established indexes are representative and typicality, and can well and comprehensively reflect the comprehensive elements of the Chinese water conservancy photography creation base. In the aspects of the content and the range of the index, the index not only comprises various characteristics of the index, but also comprises the mutual connection and interaction between the project of the Chinese water conservancy photography creation base and the external environment; it should not only reflect all important quantitative expression indexes, but also include qualitative description indexes: both recent requirements and long-term effects have to be considered.
(2) Principle of objectivity
Due to mutual benefit conflict and complex influence of factors such as preference of decision analysts and professional intersection, the selection of the indexes should be objectively, practically and measurable as much as possible, subjective arbitrariness is reduced, the condition of the Chinese water conservancy photography creation base is objectively reflected to the greatest extent possible, and experts can objectively judge the quality degree and the importance degree of each index.
(3) Principle of convenience
On the premise of meeting the completeness principle, the number of indexes is reduced as much as possible, repeated and messy information is prevented, so that the main contradiction is grasped, confusion is avoided, workload is reduced, and calculation and analysis are facilitated.
(4) Principle of relative independence
Each established index should reflect its specific attribute, and compatibility should be excluded as much as possible among the indexes.
(5) Principle of hierarchy
The indexes are of various types, and in order to meet the requirements of the principles of completeness, simplicity, relative independence, objectivity and the like, the indexes can be arranged in a layered mode, and the indexes at a higher level can be reflected by the indexes at a lower level.
(6) Principle of operability
The set index can acquire the data thereof by a conventional method or specify the calculation method thereof.
According to the principle, when the index is determined, all useful data is collected as much as possible, careful analysis and thinking are carried out, and whether the index can comprehensively reflect all characteristics of the Chinese water conservancy photography creation base is researched. In the process of determining the index, as the working depth develops, the work of checking, supplementing, deleting and the like is also continuously carried out.
S1-2: the evaluation index was determined as follows:
the water environment condition can be obtained according to the weighted average of the comprehensive pollution index, the nutrition level index and the heavy metal index, and the biodiversity index is obtained by selecting the Shannon-Weaver diversity index.
Comprehensive pollution index:
in the formula, Ci-a measured concentration of a contaminant; si-standard values for the respective categories.
Index of nutritional level
Wherein E is the nutritional level index; cCOD(mg/L)、CIN(μg/L)、CIP(μ g/L) are actual measured values of chemical oxygen consumption, dissolved inorganic nitrogen, and active phosphate, respectively.
(3) Index of heavy metals
In the formula, AiIs the relative pollution index of the ith heavy metal; p is the comprehensive pollution index of heavy metals; ciThe measured concentration value of the ith heavy metal is obtained; c0The evaluation standard value of the ith heavy metal is shown.
(4) The biodiversity index is selected from Shannon-Weaver diversity index.
Wherein S is the total number of species in the sample and Pi is the ratio of the number of individuals in the ith species to the total number of individuals in the sample.
Other indexes are obtained by inviting 10 famous experts in domestic related fields, scoring and taking an average value.
Example 3
The method for evaluating the water conservancy photography creation base in the embodiment is different from the method in the embodiments 1 and 2 in that: in step S2, weighting the evaluation index group by using a weight compromise coefficient method to obtain a weight value of each evaluation index in the evaluation index group; the specific process is as follows:
different evaluation indexes have different contributions to the comprehensive evaluation value of the water conservancy photography creation base, so that the reasonable setting of the weight value of the evaluation index is an important influence factor for determining the reliability of the evaluation result. The method of weight compromise coefficient is adopted, the subjective weight analytic hierarchy process and the objective weight entropy value process are combined to determine the weight, and the calculation precision can be conveniently and effectively improved. The formula is as follows:
w＝(1-α)qi+αpi
wherein W is index weight of index system of water conservancy photography creation base, a is weight compromise coefficient, 0 is not less than α is not more than 1, and P is (P)1，p2，...，pn) Is a subjective weight; q ═ Q (Q)1，q2，...，qn) Is an objective weight. Both the analytic hierarchy process and the entropy method belong to common methods for determining the index weight. The weight compromise coefficient herein adopts a ═ 0.5. The subjective weight value is determined by adopting an analytic hierarchy process, which is mainly to invite experts in the industry to score the relative importance of indexes of a criterion layer and an index layer, and then the relative importance of the indexes is calculated by using analytic hierarchy process software yaahp, and the consistency ratio of a judgment matrix is ensured to be less than 0.1 in the calculation. The objective weight value is determined by an entropy method, the general steps of the entropy method are that the standard processing, coordinate translation, index entropy and difference coefficient are carried out on index layer data, matlab software is adopted to program an entropy method formula function, and a weight result is obtained through calculation (table 2).
Table 2: index weighted value of water conservancy photography creation base
Example 4
The method for evaluating the water conservancy photography authoring base in the embodiment is different from the method in embodiment 3, and further, in step S3, according to the weight value of each evaluation index, the evaluation process of applying the fuzzy evaluation model based on matlab to the water conservancy photography authoring base is as follows:
the construction evaluation of the water conservancy photography creation base has many uncertain factors, most of the evaluation indexes and the standards are in nonlinear relation, the relation is complex, and no absolute clear limit exists for the quality of the evaluation. The fuzzy problem is difficult to study by adopting an accurate mathematical method, and the real condition and the attribute of the water conservancy photography creation base cannot be well represented. The fuzzy evaluation model reasonably determines the relative membership of the sample indexes to the standard intervals of all levels of indexes by adjusting the model and the parameters thereof, can effectively solve the problem of influence of boundary fuzzy evaluation results in evaluation, and improves the reliability of the sample level evaluation. MATLAB is a set of engineering calculation software with powerful functions, the efficient and convenient matrix and array operation functions of the MATLAB can enable the MATLAB to be simple, efficient and convenient when solving digital image processing problems, the MATLAB-based fuzzy evaluation model is applied to research such as water science development and hydraulic engineering construction, and the evaluation applied to a water conservancy photography creation base is not reported yet. The fuzzy evaluation model based on matlab is applied to the evaluation of the water conservancy photography creation base, the problem of influence of a boundary fuzzy evaluation result can be efficiently and conveniently solved, the construction quality of the water conservancy photography creation base can be evaluated more objectively, quantitatively and standardly, and the evaluation result is more credible.
The fuzzy comprehensive evaluation model of the water conservancy photography creation base is constructed as follows:
(1) establishing an evaluation factor set
P＝{p1，p2，p3，…pn}
Analyzing influence factors influencing the water conservancy photography creation base, establishing an evaluation index system of the water conservancy photography creation base, and determining an evaluation index factor set P, wherein P1…pnRepresenting factors of the hydrographic creation base.
(2) Establishing an evaluation set
V＝{v1，v2，v3，...vn}
The factor P to be evaluated has v1，v2，v3，...vnAnd each evaluation v corresponds to one fuzzy subset.
(3) Establishing one-factor evaluation
Establishing a fuzzy mapping f from P to V:
f：P→F(V)
Pi→f(p)＝(ri1，ri2，...，rim)∈F(V)
from the fuzzy mapping f, the fuzzy relation R can be obtainedfe.F (P × V), i.e.:
Rf(pi，vj)＝f(pi)(vj)＝rij
wherein i is 1, 2.. times.n; j is 1, 2,. said, m; 0 < rij＜＜1。rijIndicates the evaluated factor piFor evaluation vjAnd thus a fuzzy matrix R, i.e.
Let R be a one-factor evaluation matrix.
(4) Determining weights
And determining the weight value W of each evaluation index of the water conservancy photography creation base by adopting a weight compromise coefficient method.
(5) Comprehensive evaluation model
The compatibility of the weighted average fuzzy comprehensive evaluation model is wider, and the fuzzy comprehensive evaluation result, namely the fuzzy comprehensive evaluation result can be obtained according to the obtained weight W and the single-factor evaluation matrix R
In the results BiNamely the fuzzy evaluation index.
The fuzzy comprehensive evaluation calculation of the water conservancy photography creation base is realized by programming through Matlab10.0 software.
Example 5
The embodiment is a practical case of the evaluation method of the water conservancy photography creation base.
1. The method comprises the steps of selecting a water conservancy scenic spot at the bottom of a small wave, a water conservancy scenic spot of a red-flag canal and the front section of a Jinghang big canal table of Henan province as evaluation objects. Establishing an evaluation factor set P ═ P1，p2，p3，…pnIn which the present case involves a secondary evaluation, for which the target layer is P and the criterion layer is P1For the second-level evaluation, the criterion layer is P and the index layer is P1The evaluation index system of the water conservancy photography creation base is shown in table 1.
TABLE 1 evaluation index system for hydrographic creation base
2. Basic data, namely an evaluation set, of each evaluation index layer of the water conservancy photography creation base is obtained by combining field research of inviting experts with actual data collection of the base, as shown in table 2.
Table 2 evaluation set of hydrographic creation bases
3. Establishing one-factor evaluation
Establishing a fuzzy mapping f from P to V:
f：P→F(V)
Pi→f(p)＝(ri1，ri2，...，rim)∈F(V)
from the fuzzy mapping f, the fuzzy relation R can be obtainedfe.F (P × V), i.e.:
wherein i is 1, 2.. times.n; j is 1, 2,. said, m; 0 < rij＜＜1。rijIndicates the evaluated factor piFor evaluation vjAnd thus a fuzzy matrix R, i.e.
Let R be a one-factor evaluation matrix.
And (3) according to the single-factor matrix result of the primary evaluation of the hydrographic creation base in the steps (2) and (3), the result is shown in the table 3.
TABLE 3 Single factor matrix results of hydrographic creation base
(4) Determining weights
The weight value W of each evaluation index of the hydrographic creation base is determined by a weight compromise coefficient method, which is shown in table 2 in example 2.
(5) Comprehensive evaluation model
The compatibility of the weighted average fuzzy comprehensive evaluation model is wider, and the fuzzy comprehensive evaluation result, namely the fuzzy comprehensive evaluation result can be obtained according to the obtained weight W and the single-factor evaluation matrix R
In the results BiNamely the fuzzy evaluation index;
the fuzzy comprehensive evaluation calculation of the water conservancy photography creation base can be realized by programming through Matlab10.0 software, the evaluation calculation value of the index layer is embodied as the evaluation value of the criterion layer, the evaluation of the index layer embodies the advantages and disadvantages of three criterion layer indexes (photographic resources, photographic elements and water conservancy resources) of the same photography creation base, and the evaluation result is shown in a table 4.
Table 4 hydrographic creation base single factor matrix results
Repeating the steps (3), (4) and (5) to perform fuzzy comprehensive evaluation on the hydrographic creation base, wherein the first-level evaluation represents the excellence of the three hydrographic creation bases, and according to the weighted values of the three criteria layer indexes (photographic resources, photographic elements and hydraulic resources) in the table 2 of the embodiment 2, the weighted values are multiplied by the evaluation values of the three corresponding criteria layer indexes (photographic resources, photographic elements and hydraulic resources) in the table 4 to obtain the final evaluation results shown in the table 5 and the figure 1, namely the evaluation results of the red-flag canal hydrographic creation base, the small-wave-bottom hydrocreation photography base and the front-stage hydrocreation base of the large canal platform are respectively as follows: 0.6298, 0.6623, 0.5665.
The three water conservancy photography creation bases are superior to the red flag channel water conservancy photography base and the front section water conservancy photography base of the large canal table from the evaluation value.
TABLE 5 evaluation results of hydrographic creation base examples
Claims (3)
1. A water conservancy photography creation base evaluation method is characterized by comprising the following steps:
s1: constructing an evaluation index group of the water conservancy photography creation base according to the meaning of the water conservancy photography creation base; the construction of the evaluation index group comprises the construction of an evaluation index system and specific evaluation indexes:
s1-1: the method comprises the following steps of constructing an evaluation index system of the hydrographic creation base including a target layer, a criterion layer and an index layer, wherein the evaluation index system of the hydrographic creation base is shown in a table 1:
table 1: evaluation index system for water conservancy photography creation base
S1-2: the evaluation index was determined as follows:
the water environment condition is obtained according to the weighted average of the comprehensive pollution index, the nutrition level index and the heavy metal index, and the biodiversity index is obtained by selecting a Shannon-Weaver diversity index; wherein,
(1) comprehensive pollution index:
in the formula, Ci-a measured concentration of a contaminant; si-standard values for the respective categories;
(2) index of nutritional level:
wherein E is the nutritional level index; cCOD(mg/L)、CIN(μg/L)、CIP(mu g/L) are the actual measured values of chemical oxygen consumption, dissolved inorganic nitrogen and active phosphate respectively;
(3) heavy metal index:
in the formula, AiIs the relative pollution index of the ith heavy metal; p is the comprehensive pollution index of heavy metals; ciThe measured concentration value of the ith heavy metal is obtained; c0The evaluation standard value of the ith heavy metal is obtained;
(4) the biodiversity index is selected from Shannon-Weaver diversity index:
wherein S is the total number of species in the sample, PiIs the ratio of the number of individuals of the ith species to the total number of individuals in the sample;
other indexes are obtained by scoring and averaging by experts in related fields;
s2: weighting the evaluation index group by adopting a weight compromise coefficient method to obtain the weight value of each evaluation index in the evaluation index group;
s3: and carrying out fuzzy comprehensive evaluation calculation according to the weight values of the evaluation indexes to obtain evaluation values of different Chinese water conservancy photography creation bases, so as to realize evaluation of different water conservancy photography creation bases.
2. The hydrographic creation base evaluation method as recited in claim 1, further comprising: in step S2, the process of assigning weights to the evaluation index group is as follows:
the method of weight compromise coefficient is adopted, the subjective weight analytic hierarchy process and the objective weight entropy value process are combined to determine the weight, and the formula is as follows:
w＝(1-α)qi+αpi
wherein W is index weight of index system of water conservancy photography creation base, a is weight compromise coefficient, 0 is not less than α is not more than 1, and P is (P)1，p2，...，pn) Is a subjective weight; q ═ Q (Q)1，q2，...，qn) For objective weighting, the weighting factor is 0.5;
the subjective weight value is determined by adopting an analytic hierarchy process, which is mainly to invite experts in the industry to score the relative importance of indexes of a criterion layer and an index layer, and then the relative importance of the indexes is calculated by using analytic hierarchy process software yaahp, wherein the consistency ratio of a judgment matrix is ensured to be less than 0.1 in the calculation; the determination of the objective weight value adopts an entropy method, the general steps of the entropy method are that the standard processing, coordinate translation, index entropy and difference coefficient are carried out on the index layer data, matlab software is adopted to program the formula function of the entropy method, and the weight result shown in the table 2 is obtained by calculation:
table 2: index weighted value of water conservancy photography creation base
3. The hydrographic creation base evaluation method as defined in claim 1 or 2, wherein: in step S3, according to the weight value of each evaluation index, applying a matlab-based fuzzy evaluation model to the evaluation of the water conservancy photography creation base:
the fuzzy comprehensive evaluation model of the water conservancy photography creation base is constructed as follows:
(1) establishing an evaluation factor set
P＝{p1，p2，p3，…pn}
Analyzing influence factors influencing the water conservancy photography creation base, establishing an evaluation index system of the water conservancy photography creation base, and determining an evaluation index factor set P, wherein P1...pnFactors representing a hydrographic creation base;
(2) establishing an evaluation set
V＝{v1，v2，v3，...vn}
The factor P to be evaluated has v1，v2，v3，...vnEvaluating, wherein each evaluation v corresponds to a fuzzy subset;
(3) establishing one-factor evaluation
Establishing a fuzzy mapping f from P to V:
f：P→F(V)
Pi→f(p)＝(ri1，ri2，...，rim)∈F(V)
from the fuzzy mapping f, the fuzzy relation R can be obtainedfe.F (P × V), i.e.:
Rf(pi，vj)＝f(pi)(vj)＝rij
wherein i is 1, 2.. times.n; j is 1, 2,. said, m; 0 < rij＜＜1。rijIndicates the evaluated factor piFor evaluation vjAnd thus a fuzzy matrix R, i.e.
The R is called a single-factor evaluation matrix;
(4) determining weights
Determining the weight value W of each evaluation index of the water conservancy photography creation base by adopting a weight compromise coefficient method, wherein the detailed calculation method is as the content in section 3;
(5) comprehensive evaluation model
The compatibility of the weighted average fuzzy comprehensive evaluation model is wider, and the fuzzy comprehensive evaluation result, namely the fuzzy comprehensive evaluation result can be obtained according to the obtained weight W and the single-factor evaluation matrix R
In the results BiNamely the fuzzy evaluation index;
the fuzzy comprehensive evaluation calculation of the water conservancy photography creation base is realized by programming through Matlab10.0 software.
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