CN114493182A - Ecological health evaluation method and device for urban river channels in plain river network area - Google Patents
Ecological health evaluation method and device for urban river channels in plain river network area Download PDFInfo
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Abstract
The invention discloses an ecological health evaluation method and device for urban riverways in plain river network areas, wherein the method comprises the following steps: analyzing key factors influencing the ecological health of the urban river channel, and determining a water quality index representing the ecological health condition of the urban river channel based on the key factors; performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; establishing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; and establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel. The invention can effectively evaluate the water environment by reflecting the comprehensive influence of a plurality of indexes, and reflect the ecological health level of the water body.
Description
Technical Field
The invention relates to the technical field of water environment evaluation, in particular to an ecological health evaluation method and device for urban riverways in plain river network areas.
Background
At present, the quality of water in urban water bodies of plain river networks in developed regions is basically improved obviously, the environmental quality improvement target also has higher requirements, and the environmental quality improvement target is changed from the standard reaching of conventional pollutant concentration to the high standard of constructing hydrophilic environment and realizing water ecological safety. In order to improve the urban water environment quality, the current situation and the development condition of the urban water environment are systematically and comprehensively evaluated, and the water quality of a water body is comprehensively and quantitatively evaluated according to a certain standard for specific monitoring data so as to analyze the influence of water pollution on industrial and agricultural production and an ecological system and evaluate whether a certain water body meets a certain functional requirement.
The traditional evaluation method is difficult to reflect the comprehensive influence of a plurality of indexes and is difficult to directly hook with the ecological health level, so that an appropriate evaluation method is continuously researched to reflect the ecological health level of the water body and develop the research of the ecological health evaluation method of the urban river.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, one purpose of the invention is to provide an ecological health evaluation method for urban riverways in plain river network areas, which comprises the steps of determining evaluation indexes for representing ecological health degree by analyzing main influence factors of urban water ecological health, establishing a grading evaluation standard of ecological health evaluation, constructing an ecological health evaluation index system, obtaining evaluation requirement values and evaluation element weights, and calculating through an ecological health comprehensive evaluation index to judge the ecological health condition of the riverway.
The invention also aims to provide an ecological health evaluation device for the urban river in the plain river network area.
In order to achieve the purpose, the invention provides an ecological health evaluation method of urban riverways in plain river network areas on one hand, which comprises the following steps: analyzing key factors influencing the ecological health of the urban river channel, and determining a water quality index representing the ecological health condition of the urban river channel based on the key factors; performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; establishing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades.
According to the ecological health evaluation method for the urban river in the plain river network area, disclosed by the embodiment of the invention, key factors influencing the ecological health of the urban river are analyzed, and a water quality index representing the ecological health condition of the urban river is determined based on the key factors; performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; establishing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades. The ecological health comprehensive evaluation index is used for calculating to judge the ecological health condition of the river channel.
In addition, the ecological health evaluation method for the urban river channels in the plain river network area according to the embodiment of the invention can also have the following additional technical characteristics:
further, in an embodiment of the present invention, the river ecological health evaluation index includes: four evaluation indexes of riverway structure, hydrological state, water quality condition and aquatic organisms.
Further, in an embodiment of the present invention, the performing element evaluation based on the evaluation index of ecological health of the river channel to obtain a score of each element, and performing weighted summation according to the scores of each element to obtain an evaluation element weight includes: the river channel structure index is subjected to score addition calculation according to the substrate, the river channel bank slope material composition, the river channel section shape, the river bank stability and the river bank land vegetation coverage index; the hydrological state index is subjected to score addition calculation according to the water depth and flow rate indexes; the water quality condition index is an index of a basic item of surface water environment quality standard; the aquatic biological indicators comprise aquatic vascular bundle plant indicator species scores, planktonic algae shannon-Vera indexes, Parmer algae pollution indexes and BMWP scoring system indicators; and setting a fixed evaluation element for each evaluation index of the four types of evaluation indexes, and scoring different evaluation elements according to a scoring standard to obtain the score of each evaluation element so as to obtain the element score of the four types of evaluation indexes.
Further, in an embodiment of the present invention, the recommended weight of the river structure index is 0.2, the recommended weight of the hydrological state index is 0.2, the recommended weight of the water quality condition index is 0.4, and the recommended weight of the aquatic organism index is 0.4.
Further, in an embodiment of the present invention, the ecological health comprehensive evaluation index is constructed by the following formula:
where n is the number of evaluation indexes, i is the kind of evaluation index, i is (1,2 to n), and xiTo evaluate the element score, wiCAI is the comprehensive evaluation index of the ecological health for evaluating element weight.
In order to achieve the above object, in another aspect, the present invention provides an ecological health evaluation device for an urban river in a plain river network area, comprising: the index characterization module is used for analyzing key factors influencing the ecological health of the urban river channel and determining a water quality index for characterizing the ecological health condition of the urban river channel based on the key factors; the element calculation module is used for performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; the index construction module is used for constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; the result acquisition module is used for establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades.
The ecological health evaluation device of the urban river in the plain river network area is used for analyzing key factors influencing the ecological health of the urban river through the index characterization module and determining a water quality index for characterizing the ecological health condition of the urban river based on the key factors; the element calculation module is used for performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; the index construction module is used for constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; the result acquisition module is used for establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades. The ecological health comprehensive evaluation index is used for calculating to judge the ecological health condition of the river channel.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an ecological health evaluation method for urban river channels in plain river network areas according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of an ecological health evaluation device for urban riverways in plain river network areas according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The method and the device for evaluating the ecological health of the urban river channels in the plain river network area according to the embodiment of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an ecological health evaluation method for urban river channels in plain river network areas according to an embodiment of the invention.
As shown in fig. 1, the ecological health evaluation method of the urban river in the plain river network area comprises the following steps:
step S1, analyzing key factors influencing the ecological health of the urban river channel, and determining a water quality index representing the ecological health condition of the urban river channel based on the key factors; and the number of the first and second groups,
step S2, performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight;
step S3, constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result;
step S4, establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderately impaired, and severely impaired levels.
As an example, the river ecological health evaluation indexes include four types of evaluation indexes of river structure, hydrological state, water quality condition and aquatic organisms.
As an example, a comprehensive evaluation index CAI is constructed and is obtained through the ecological health comprehensive evaluation index
And comprehensively evaluating the ecological health condition of the urban river, wherein n is the number of the evaluation elements, i is the type of the evaluation index, and i is (1, 2-n).
As an example, the water quality index representing the ecological health of the urban river is classified into five grades, namely health, sub-health, general, moderate damage, severe damage and the like, an ecological health comprehensive evaluation system is established, and the ecological health grade of the river is obtained.
Specifically, according to four evaluation indexes of a river channel structure, a hydrological state, a water quality condition and aquatic organisms, the value ranges and weights of all elements are determined, and the values are shown in table 1:
TABLE 1
Scoring four indexes of the riverway structure, the hydrological state, the water quality condition and the aquatic organisms according to evaluation requirements respectively to obtain score ranges of the four indexes;
the structure evaluation of the riverway of the investigated river section is to add and calculate according to 5 indexes of bottom materials, the composition of riverway bank slope materials, the cross section shape of the riverway, the stability of the riverway bank and the land vegetation coverage rate of the riverway bank, and carry out grading evaluation;
the hydrological state evaluation of the investigated river section is calculated according to the sum of 2 index scores of the depth and the flow speed of the river water, and graded evaluation is carried out;
the water quality evaluation of the surveyed river reach is in accordance with the regulation of the limit value of the basic project standard GB 3838 of surface water environmental quality standard, and the water quality evaluation is assigned according to the class grade of the water quality;
the aquatic organism evaluation of the surveyed river reach can be calculated according to the sum of scores of 4 indexes of aquatic vascular bundle plant indicator species, Shannon-Vera index of planktonic algae, Parmer algae pollution index and BMWP scoring system, and grading evaluation is carried out;
according to the suggested weight of the index, based on
And calculating to obtain the comprehensive evaluation index of the ecological health of the urban river.
According to the evaluation element scores and weights of four evaluation indexes of the river structure, the hydrological state, the water quality condition and the aquatic organisms, the ecological health level of the urban river is divided into five levels of health, sub-health, general, moderate damage, severe damage and the like, so that comprehensive evaluation grading standards are obtained, and the evaluation grading standards are shown in table 2:
TABLE 2
The following further describes the embodiments and operation of the present invention.
Selecting representative urban river channels to investigate and evaluate the indexes of the habitat and ecological elements;
the method comprises the steps of sorting and analyzing on the basis of collecting existing river channel plane and section structure, hydrology, water quality, ecology, social economy and other data, carrying out on-site reconnaissance, and making a survey, monitoring and evaluation scheme of river channel ecological health;
the special investigation should be carried out according to the comprehensive evaluation requirements and according to the four indexes of the riverway structure, the hydrological state, the water quality condition and the aquatic organisms;
as shown in table 3, the river channel structure evaluation should include substrate, river channel bank slope material composition, river channel section shape, river bank stability, and river bank land vegetation coverage, and is divided into four evaluation grades, and the score range should be between 1 and 4. The evaluation element index suggested weight is 0.2:
TABLE 3
As shown in table 4, the river hydrologic state evaluation should include water depth and flow rate, the index is divided into five evaluation grades, the score range is between 1 and 5, and the suggested index weight is 0.2:
TABLE 4
As shown in table 5, the water quality of the river should be evaluated by selecting monthly water quality monitoring data of a hydrological whole year, and the suggested index weight is 0.4:
TABLE 5
As shown in table 6, the aquatic organisms in the river channel should include aquatic vascular bundle plant indicator species score, floating algae shannon-wilan index, palmer algae pollution index and BMWP scoring system index, and are divided into five evaluation grades, the score range should be between 1 and 5, and the suggested index weight is 0.2:
TABLE 6
The comprehensive evaluation of the invention is to construct a comprehensive evaluation index according to the weighted summation of 4 indexes of the river channel structure, the hydrological state, the water quality condition and the aquatic organisms
And (6) performing calculation.
Wherein x isiTo evaluate the element score, wiFor evaluating the weight of the elements, n is the number of evaluation indexes, each itemPrime score range and weight.
And finally, judging the ecological health degree of the urban river according to the CAI index, and analyzing the levels of health, sub-health, general, moderate damage and severe damage of the urban river ecology.
According to the ecological health evaluation method for the urban river in the plain river network area, disclosed by the embodiment of the invention, key factors influencing the ecological health of the urban river are analyzed, and a water quality index representing the ecological health condition of the urban river is determined based on the key factors; performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; establishing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades. The ecological health comprehensive evaluation index is used for calculating to judge the ecological health condition of the river channel.
Next, an ecological health evaluation device for an urban river in a plain river network area according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 2 is a schematic structural view of an ecological health evaluation device for an urban river in a plain river network area according to an embodiment of the invention.
As shown in fig. 2, the ecological health evaluation device 10 for an urban river in a plain river network area includes: the index representation module 100, the element calculation module 200, the index construction module 300 and the result acquisition module 400.
The index characterization module 100 is used for analyzing key factors affecting the ecological health of the urban river channel and determining a water quality index for characterizing the ecological health condition of the urban river channel based on the key factors; and the number of the first and second groups,
the element calculation module 200 is used for performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight;
the index construction module 300 is used for constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river through the ecological health comprehensive evaluation index to obtain an evaluation result;
the result obtaining module 400 is used for establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades.
Further, the river ecological health evaluation index comprises: four evaluation indexes of the river channel structure, the hydrological state, the water quality condition and the aquatic organisms.
Further, the element calculation module 200 includes:
the river channel structure index calculation module is used for performing score addition calculation on river channel structure indexes according to the bottom material, the river channel bank slope material composition, the river channel section shape, the river bank stability and the river bank land vegetation coverage index;
the hydrologic state index calculation module is used for carrying out score addition calculation on the hydrologic state index according to the water depth and the flow rate index;
the water quality condition index calculation module is used for taking the water quality condition index as an index of a basic item of the surface water environment quality standard;
the aquatic organism index calculation module is used for calculating aquatic organism indexes including aquatic vascular bundle plant indicated species values, planktonic algae shannon-Vera indexes, Parmer algae pollution indexes and BMWP scoring system indexes;
and the comprehensive score calculation module is used for setting fixed evaluation elements for each evaluation index of the four types of evaluation indexes, and scoring different evaluation elements according to a scoring standard to obtain the score of each evaluation element so as to obtain the element score of the four types of evaluation indexes.
Further, the suggested weight of the river channel structure index is 0.2, the suggested weight of the hydrological state index is 0.2, the suggested weight of the water quality condition index is 0.4, and the suggested weight of the aquatic organism index is 0.4.
Further, an ecological health comprehensive evaluation index is constructed and is a formula as follows:
where n is the number of evaluation indexes, i is the kind of evaluation index, i is (1,2 to n), and xiTo evaluate the element score, wiAnd CAI is an ecological health comprehensive evaluation index for evaluating element weight.
It should be noted that the explanation of the embodiment of the method for evaluating ecological health of an urban river in a plain river network area is also applicable to the device, and is not repeated here.
According to the ecological health evaluation device of the urban river in the plain river network area, disclosed by the embodiment of the invention, the index characterization module is used for analyzing key factors influencing the ecological health of the urban river and determining the water quality index for characterizing the ecological health condition of the urban river based on the key factors; the element calculation module is used for performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight; the index construction module is used for constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result; the result acquisition module is used for establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels includes: healthy, sub-healthy, general, moderate impaired and severe impaired grades. The ecological health comprehensive evaluation index is used for calculating to judge the ecological health condition of the river channel.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An ecological health evaluation method for urban riverways in plain river network areas is characterized by comprising the following steps:
analyzing key factors influencing the ecological health of the urban river channel, and determining a water quality index representing the ecological health condition of the urban river channel based on the key factors; and the number of the first and second groups,
performing element evaluation based on the river ecological health evaluation index to obtain an evaluation element score, and performing weighted summation according to the evaluation element score to obtain an evaluation element weight;
establishing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result;
establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels comprise: healthy, sub-healthy, general, moderate impaired and severe impaired grades.
2. The ecological health assessment method of the urban river channel in the plain river network area according to claim 1, wherein the river channel ecological health assessment indicators comprise:
four evaluation indexes of riverway structure, hydrological state, water quality condition and aquatic organisms.
3. The ecological health assessment method of the urban river channel of the plain river network area according to claim 2, wherein the evaluating of the elements based on the ecological health assessment indexes of the river channel to obtain the scores of the elements, and the weighting and summing are performed according to the scores of the elements to obtain the weights of the assessed elements, comprises:
the river channel structure index is subjected to score addition calculation according to the substrate, the river channel bank slope material composition, the river channel section shape, the river bank stability and the river bank land vegetation coverage index;
the hydrological state index is subjected to score addition calculation according to the water depth and flow rate indexes;
the water quality condition index is an index of a basic item of surface water environment quality standard;
the aquatic biological indicators comprise aquatic vascular bundle plant indicator species scores, planktonic algae shannon-Vera indexes, Parmer algae pollution indexes and BMWP scoring system indicators;
and setting a fixed evaluation element for each evaluation index of the four types of evaluation indexes, and scoring different evaluation elements according to a scoring standard to obtain the score of each evaluation element so as to obtain the element score of the four types of evaluation indexes.
4. The method of claim 3, wherein the proposed weight of the river course structure index is 0.2, the proposed weight of the hydrological state index is 0.2, the proposed weight of the water quality condition index is 0.4, and the proposed weight of the aquatic organism index is 0.4.
5. The ecological health assessment method of the urban river channels in the plain river network areas according to claim 1, wherein the ecological health comprehensive assessment index is constructed according to the following formula:
where n is the number of evaluation indexes, i is the kind of evaluation index, i is (1,2 to n), and xiTo evaluate the element score, wiFor evaluating element weight, CAI is ecological health comprehensive evaluationA price index.
6. The utility model provides an ecological health evaluation device of plain river network district city river course which characterized in that includes:
the index characterization module is used for analyzing key factors influencing the ecological health of the urban river channel and determining a water quality index for characterizing the ecological health condition of the urban river channel based on the key factors; and the number of the first and second groups,
the factor calculation module is used for performing factor evaluation based on the river ecological health evaluation index to obtain an evaluation factor score, and performing weighted summation according to the evaluation factor score to obtain an evaluation factor weight;
the index construction module is used for constructing an ecological health comprehensive evaluation index based on the evaluation element weight, and comprehensively evaluating the ecological health condition of the urban river channel through the ecological health comprehensive evaluation index to obtain an evaluation result;
the result acquisition module is used for establishing an ecological health comprehensive evaluation system according to the water quality indexes in multiple levels based on the evaluation result so as to obtain the ecological health level of the river channel; wherein the plurality of levels comprise: healthy, sub-healthy, general, moderate impaired and severe impaired grades.
7. The ecological health assessment device of the urban river channel of the plain river network area according to claim 6, wherein the river channel ecological health assessment indicators comprise:
four evaluation indexes of riverway structure, hydrological state, water quality condition and aquatic organisms.
8. The ecological health assessment device for the urban river channels in the plain river network areas according to claim 7, wherein the element calculation module comprises:
the river channel structure index calculation module is used for performing score addition calculation on the river channel structure indexes according to the bottom materials, the river channel bank slope material composition, the river channel section shape, the river bank stability and the river bank land vegetation coverage rate indexes;
the hydrologic state index calculation module is used for performing score addition calculation on the hydrologic state index according to the water depth and the flow rate index;
the water quality condition index calculation module is used for calculating the water quality condition indexes which are indexes of basic items of surface water environment quality standards;
the aquatic organism index calculation module is used for calculating the aquatic organism indexes including aquatic vascular bundle plant indicated species scores, planktonic algae shannon-Vera indexes, Parmer algae pollution indexes and BMWP scoring system indexes;
and the comprehensive score calculation module is used for setting a fixed evaluation element for each evaluation index of the four types of evaluation indexes, and scoring different evaluation elements according to a scoring standard to obtain the score of each evaluation element so as to obtain the element score of the four types of evaluation indexes.
9. The ecological health assessment device of the urban riverway in the plain river network area according to claim 8, wherein the riverway structure index suggestion weight is 0.2, the hydrological state index suggestion weight is 0.2, the water quality condition index suggestion weight is 0.4, and the aquatic organism index suggestion weight is 0.4.
10. The ecological health assessment device of the urban river channel of the plain river network area according to claim 6, wherein the ecological health comprehensive assessment index is constructed according to the following formula:
where n is the number of evaluation indexes, i is the kind of evaluation index, i is (1,2 to n), and xiTo evaluate the element score, wiCAI is the comprehensive evaluation index of the ecological health for evaluating element weight.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115219682A (en) * | 2022-07-14 | 2022-10-21 | 武汉鸿榛园林绿化工程有限公司 | River water environment treatment monitoring and analyzing system based on artificial intelligence |
| CN118228936A (en) * | 2024-05-23 | 2024-06-21 | 北京建筑大学 | Intelligent evaluation method and system for urban healthy community space |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115219682A (en) * | 2022-07-14 | 2022-10-21 | 武汉鸿榛园林绿化工程有限公司 | River water environment treatment monitoring and analyzing system based on artificial intelligence |
| CN115219682B (en) * | 2022-07-14 | 2024-02-20 | 武汉鸿榛园林绿化工程有限公司 | River course water environment treatment monitoring analysis system based on artificial intelligence |
| CN118228936A (en) * | 2024-05-23 | 2024-06-21 | 北京建筑大学 | Intelligent evaluation method and system for urban healthy community space |
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