CN109767097A - A kind of river vertical communication evaluation method - Google Patents
A kind of river vertical communication evaluation method Download PDFInfo
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- CN109767097A CN109767097A CN201811624852.2A CN201811624852A CN109767097A CN 109767097 A CN109767097 A CN 109767097A CN 201811624852 A CN201811624852 A CN 201811624852A CN 109767097 A CN109767097 A CN 109767097A
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Abstract
The present invention relates to a kind of river vertical communication evaluation methods, belong to environmental evaluation technical field, include the following steps: step 1, quantity, height, length, water-holding capacity and the geographical location of search survey region inland river flow resistance parting and Record analysis region inland river flow resistance parting；Step 2, each river barrier is individually evaluated, evaluation index includes: Status of Fisher Resources, fish percent of pass, by difficulty, habitat quantity and habitat quality, and is recorded；Step 3, on the basis of obtaining each river barrier evaluation result in step 2, weight is assigned according to its position apart from river mouth, and be weighted and averaged to each evaluation result, obtains the river vertical communication degree in survey region.The present invention completes the calculating and amendment of river vertical communication degree by increasing the diversity indices of Status of Fisher Resources, fish percent of pass, passing through difficulty, habitat quantity and habitat quality as reference.
Description
Technical field
The invention belongs to environmental evaluation technical field more particularly to a kind of river vertical communication evaluation methods.
Background technique
With the development of economy, climate change produces significant impact be connected to pattern of the mankind's activity to river, especially
It is that artificial building such as weir, lock, weir may interfere with or prevent fish to reach necessary habitat, it is possible to influence point of fish
The diffusion of cloth, population structure, reproductive success and many species.A series of Ecologies caused by being obstructed by connectivity, water environment,
Water security problem seriously constrains the sustainable development of regional economy and society.Therefore, Connectivity Evaluation is for building gate dam etc.
Structures and the construction position of such building etc. are of great significance.But existing Connectivity Evaluation is generally based on
The hydrology, hydrodynamic character evaluate the connectivity in river, do not account for the situation of excessive biology and its habitat quality,
Also connectivity value is not modified.Based on this, the invention establish it is a set of suitable under hydroelectric development background river it is vertical
To Connectivity Evaluation method, the status for structures such as hydroelectric developments makees qualitative evaluation, to preferably serve regional strategy
In planning and construction process.
Such as Chinese Patent Application No. are as follows: a kind of water system Connectivity Evaluation side of the patent disclosure of CN201810471502.0
Method digitizes the network of waterways of target area, obtains the network of waterways data of reflection water system connectivity；According to above-mentioned network of waterways data, establish
The appraisement system of water system connectivity；Using the principal component in Principal Component Analysis selection system, and using Information Entropy to principal component
Carry out tax power；It determines the water system connectivity comprehensive score in region, and then the variation of water system connectivity is analyzed.Wherein, water
Be that Connectivity Evaluation system is made of first class index layer and second level index layer: quantity connectivity index includes river density, the water surface
Rate；Structural connectivity index includes network of waterways development coefficient, Area length ratio, average path length；Functional connectivity index includes
Cluster coefficients, node degree, node are averaged betweenness.By being classified to each index, being counted, pass through Principal Component Analysis and entropy
Method obtains comprehensive score, and then is objectively analyzed the variation of water system connectivity, is river and lake health, the function of river system analysis
Foundation is provided.But the patent is without reference to Ecology, water environment, water security problem.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of river vertical communication evaluation methods.
The river vertical communication evaluation method, includes the following steps:
Step 1, search survey region inland river flow resistance parting and the quantity of Record analysis region inland river flow resistance parting, height,
Length, water-holding capacity and geographical location；
Step 2, each river barrier is individually evaluated, evaluation index includes: that Status of Fisher Resources, fish are logical
It crosses rate, by difficulty, habitat quantity and habitat quality, and records；
Step 3, on the basis of obtaining each river barrier evaluation result in step 2, according to its position apart from river mouth
Imparting weight is set, and each evaluation result is weighted and averaged, obtains the river vertical communication degree in survey region；
Further, the calculation method of each evaluation index is as follows in step 2:
1) the diversity marking mode of single river barrier Status of Fisher Resources are as follows:
Diversity indices > 9 of fish section, diversity indices > 5 of category, scoring is 5, and diversity situation is preferably；
Fish section diversity indices [8,9), the diversity indices of category [4,5), scoring is 4, and diversity situation is preferable；
Fish section diversity indices [7,8), the diversity indices of category [3,4), scoring is 3, and diversity situation is medium；
Fish section diversity indices [6,7), the diversity indices of category [2,3), scoring is 2, and diversity situation is poor；
Diversity indices < 6 of fish section, diversity indices < 2 of category, scoring is 1, and diversity situation is poor；
2) calculation of the fish percent of pass of single river barrier is as follows:
The fish percent of pass of single river barrier are as follows:Wherein, P is single river barrier
Fish percent of pass, vuFor the mean flow rate of single each section of river barrier upstream region, vdFor single river barrier catchment
The mean flow rate of each section in domain；
When fish percent of pass > 0.95, scoring is 5, and percent of pass situation is preferably；
Fish percent of pass (0.9-0.95] when, scoring is 4, and percent of pass situation is preferable；
Fish percent of pass (0.8-0.9] when, scoring is 3, and percent of pass situation is medium；
When fish percent of pass [0.6-0.8], scoring is 2, and percent of pass situation is poor；
When fish percent of pass < 0.6, scoring is 1, and percent of pass situation is poor；
3) bounds evaluation that the fish of single river barrier pass through difficulty are as follows:
Define the product for the fish percent of pass that D is single river barrier and the single river barrier in upstream to be evaluated, D
Calculation formula are as follows: D=Pn*Pn-1, PnFor the fish percent of pass of single river barrier to be evaluated, Pn-1To be evaluated is single
The fish percent of pass of the single river barrier in the upstream of river barrier；
Defining K is single river barrier to be evaluated at a distance from the single river barrier in upstream；
As D < 30%, K < 50, the scoring that the fish of single river barrier pass through difficulty is 1；
As D < 30%, [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 2；
As D<30%, K>150, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K < 50, the scoring that the fish of single river barrier pass through difficulty is 2；
When D ∈ [30%, 70%], [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K > 150, the fish of single river barrier pass through the scoring 4 of difficulty；
Work as D>70%, when K<50, the scoring that the fish of single river barrier pass through difficulty is 3；
Work as D > 70%, when [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 4；
Work as D > 70%, when K > 150, the scoring that the fish of single river barrier pass through difficulty is 5；
4) the habitat quantity marking mode of single river barrier is as follows:
When river length > 50km between the single river barrier in upstream, scoring is 5；
Between the single river barrier in upstream river length (40,50] km when, scoring is 4；
Between the single river barrier in upstream river length (35,40] km when, scoring is 3；
Between the single river barrier in upstream river length (30,35] km when, scoring is 2；
When the Chang Du≤30km in river between the single river barrier in upstream, scoring is 1；
5) the habitat quality evaluation method of single river barrier, according to China national water environment quality standard into
Row scoring is as follows:
Reach water standard II class, scoring is 5, and habitat quality is excellent；
Reach water standard Group III, scoring is 4, and habitat quality is good；
Reach water standard IV class, scoring is 3, in habitat quality；
Reach water standard V class, scoring is 2, and habitat quality is poor；
Reach the bad V class of water standard, scoring is 1, and habitat quality is very poor；
Further, the 1 of step 2) in,
The diversity indices calculation formula of section are as follows:In formula, pi=Wki/Wk, WkiEqual to K
Species number in section i category, WkEqual to the species number of K section, n is equal to the category number in k section, and m is equal to section's number；
The diversity indices calculation formula of category are as follows:In formula, qj=Wj/ W, WjEqual in j category
Species number, W are equal to total species number of fish, and p is equal to the category number of fish.
Further, the 3 of step 2) in, PnWith Pn-1Calculation with formula 1.
Further, the 5 of step 2) in, national water environment quality standard is GB3838-2002 standard.
Further, in step 3, river vertical communication degree calculating formula is as follows:
Wherein,C is the degree of communication of section；liFor under single river barrier i distance
Swim the distance in river mouth, unit: km, liThe bigger destruction to connectivity is also bigger；L is each single river barrier away from river mouth distance
Summation, unit: km；M is the quantity of single river barrier；N is the quantity of evaluation index；aijFor i-th of single river resistance
The scoring of the j index of parting；Q is connectivity coefficient of colligation；
The evaluation method of river vertical communication degree are as follows:
When C value > 20, grading is preferably；
C value [15,20) when, it is rated preferably；
C value [10,15) when, it is rated；
C value [5,10) when, it is rated poor；
When C value < 5, it is rated difference；
Further, in step 3, the scoring criteria of connectivity coefficient of colligation Q is as follows:
When average hundred kilometers of dam number < 1/100km, the value of Q is 1；
Average hundred kilometers of dam numbers [1,2) a/100km when, the value of Q is 0.75；
Average hundred kilometers of dam numbers [2,3) a/100km when, the value of Q is 0.5；
Average hundred kilometers of dam numbers [3,4) a/100km when, the value of Q is 0.25；
When average hundred kilometers of dam number >=4/100km, the value of Q is 0.1.
The beneficial effects of the present invention are:
1. vertical communication evaluation method in river of the present invention, by increase Status of Fisher Resources diversity indices,
Fish percent of pass is used as reference by difficulty, habitat quantity and habitat quality, is considering more biologies and its habitat quality
In the case of complete the calculating and amendment of river vertical communication degree.
2. vertical communication evaluation method in river of the present invention is mainly for the environmental health under river barrier
Ecology influence under gate dam improvement or project situation provides reference.
3. vertical communication evaluation method in river of the present invention, innovative given connectivity coefficient of colligation Q, so that
Numerical result under quantized values result and gate dam actual augmentation scene is more close.
Specific embodiment
Embodiment 1
The river vertical communication evaluation method, includes the following steps:
Step 1, search survey region inland river flow resistance parting and the quantity of Record analysis region inland river flow resistance parting, height,
Length, water-holding capacity and geographical location；
Step 2, each single river barrier is individually evaluated, evaluation index includes: single river barrier fish
Current resources situation, single river barrier fish percent of pass, single river barrier pass through difficulty, single river barrier habitat
Quantity and single river barrier habitat quality, and record；Wherein:
1) the diversity marking mode of single river barrier Status of Fisher Resources are as follows:
The diversity indices calculation formula of section are as follows:In formula, pi=Wki/Wk, WkiEqual to K section i
Species number in category, WkEqual to the species number of K section, n is equal to the category number in k section, and m is equal to section's number；
The diversity indices calculation formula of category are as follows:In formula, qj=Wj/ W, WjEqual in j category
Species number, W are equal to total species number of fish, and p is equal to the category number of fish；
Diversity indices > 9 of fish section, diversity indices > 5 of category, scoring is 5, and diversity situation is preferably；
Fish section diversity indices [8,9), the diversity indices of category [4,5), scoring is 4, and diversity situation is preferable；
Fish section diversity indices [7,8), the diversity indices of category [3,4), scoring is 3, and diversity situation is medium；
Fish section diversity indices [6,7), the diversity indices of category [2,3), scoring is 2, and diversity situation is poor；
Diversity indices < 6 of fish section, diversity indices < 2 of category, scoring is 1, and diversity situation is poor；
2) calculation of the fish percent of pass of single river barrier is as follows:
The fish percent of pass of single river barrier are as follows:Wherein, P is single river barrier
Fish percent of pass, vuFor the mean flow rate of single each section of river barrier upstream region, vdFor single river barrier catchment
The mean flow rate of each section in domain；
When fish percent of pass > 0.95, scoring is 5, and percent of pass situation is preferably；
Fish percent of pass (0.9-0.95] when, scoring is 4, and percent of pass situation is preferable；
Fish percent of pass (0.8-0.9] when, scoring is 3, and percent of pass situation is medium；
When fish percent of pass [0.6-0.8], scoring is 2, and percent of pass situation is poor；
When fish percent of pass < 0.6, scoring is 1, and percent of pass situation is poor；
3) bounds evaluation that the fish of single river barrier pass through difficulty are as follows:
Define the product for the fish percent of pass that D is single river barrier and the single river barrier in upstream to be evaluated, D
Calculation formula are as follows: D=Pn*Pn-1, PnFor the fish percent of pass of single river barrier to be evaluated, Pn-1To be evaluated is single
The fish percent of pass of the single river barrier in the upstream of river barrier；PnWith Pn-1Calculation with formula 1；
Defining K is single river barrier to be evaluated at a distance from the single river barrier in upstream；
As D < 30%, K < 50, the scoring that the fish of single river barrier pass through difficulty is 1；
As D < 30%, [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 2；
As D<30%, K>150, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K < 50, the scoring that the fish of single river barrier pass through difficulty is 2；
When D ∈ [30%, 70%], [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K > 150, the fish of single river barrier pass through the scoring 4 of difficulty；
Work as D>70%, when K<50, the scoring that the fish of single river barrier pass through difficulty is 3；
Work as D > 70%, when [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 4；
Work as D > 70%, when K > 150, the scoring that the fish of single river barrier pass through difficulty is 5；
4) the habitat quantity marking mode of single river barrier is as follows:
When river length > 50km between the single river barrier in upstream, scoring is 5；
Between the single river barrier in upstream river length (40,50] km when, scoring is 4；
Between the single river barrier in upstream river length (35,40] km when, scoring is 3；
Between the single river barrier in upstream river length (30,35] km when, scoring is 2；
When the Chang Du≤30km in river between the single river barrier in upstream, scoring is 1；
5) the habitat quality evaluation method of single river barrier is as follows:
It is scored according to national water environment quality standard；
Reach water standard II class, scoring is 5, and habitat quality is excellent；
Reach water standard Group III, scoring is 4, and habitat quality is good；
Reach water standard IV class, scoring is 3, in habitat quality；
Reach water standard V class, scoring is 2, and habitat quality is poor；
Reach the bad V class of water standard, scoring is 1, and habitat quality is very poor；
Step 3, on the basis of obtaining each river barrier evaluation result in step 2, according to its position apart from river mouth
Imparting weight is set, and each evaluation result is weighted and averaged, obtains the river vertical communication degree in survey region；
River vertical communication degree calculating formula is as follows:
Wherein,C is the degree of communication of section；liIt is single river barrier i apart from downstream
The distance in river mouth, unit: km, liThe bigger destruction to connectivity is also bigger；L is each single river barrier away from river mouth distance
Summation, unit: km；M is the quantity of single river barrier；N is the quantity of evaluation index；aijFor i-th of single river barrier
The scoring of the j index of object；Q is connectivity coefficient of colligation；
Wherein, the scoring criteria of connectivity coefficient of colligation Q is as follows:
When average hundred kilometers of dam number < 1/100km, the value of Q is 1；
Average hundred kilometers of dam numbers [1,2) a/100km when, the value of Q is 0.75；
Average hundred kilometers of dam numbers [2,3) a/100km when, the value of Q is 0.5；
Average hundred kilometers of dam numbers [3,4) a/100km when, the value of Q is 0.25；
When average hundred kilometers of dam number >=4/100km, the value of Q is 0.1；
The evaluation method of river vertical communication degree are as follows:
When C value > 20, grading is preferably；
C value [15,20) when, it is rated preferably；
C value [10,15) when, it is rated；
C value [5,10) when, it is rated poor；
When C value < 5, it is rated difference.
The foregoing is merely presently preferred embodiments of the present invention, it is all according to equivalent change made by scope of the present invention patent with
Modification, all because belonging to the scope of the present invention.
Claims (7)
1. a kind of river vertical communication evaluation method, which comprises the steps of:
Step 1, search survey region inland river flow resistance parting and the quantity of Record analysis region inland river flow resistance parting, height, length,
Water-holding capacity and geographical location；
Step 2, each river barrier is individually evaluated, evaluation index includes: that Status of Fisher Resources, fish pass through
Rate passes through difficulty, habitat quantity and habitat quality, and records；
Step 3, it on the basis of obtaining each river barrier evaluation result in step 2, is assigned according to its position apart from river mouth
Weight is given, and each evaluation result is weighted and averaged, obtains the river vertical communication degree in survey region.
2. a kind of river vertical communication evaluation method according to claim 1, which is characterized in that each in the step 2
The calculation method of evaluation index is as follows:
1) the diversity marking mode of single river barrier Status of Fisher Resources are as follows:
Diversity indices > 9 of fish section, diversity indices > 5 of category, scoring is 5, and diversity situation is preferably；
Fish section diversity indices [8,9), the diversity indices of category [4,5), scoring is 4, and diversity situation is preferable；
Fish section diversity indices [7,8), the diversity indices of category [3,4), scoring is 3, and diversity situation is medium；
Fish section diversity indices [6,7), the diversity indices of category [2,3), scoring is 2, and diversity situation is poor；
Diversity indices < 6 of fish section, diversity indices < 2 of category, scoring is 1, and diversity situation is poor；
2) calculation of the fish percent of pass of single river barrier is as follows:
The fish percent of pass of single river barrier are as follows:Wherein, P is the fish percent of pass of single river barrier, vu
For the mean flow rate of single each section of river barrier upstream region, vdFor the flat of single each section of river barrier downstream area
Equal flow velocity；
When fish percent of pass > 0.95, scoring is 5, and percent of pass situation is preferably；
Fish percent of pass (0.9-0.95] when, scoring is 4, and percent of pass situation is preferable；
Fish percent of pass (0.8-0.9] when, scoring is 3, and percent of pass situation is medium；
When fish percent of pass [0.6-0.8], scoring is 2, and percent of pass situation is poor；
When fish percent of pass < 0.6, scoring is 1, and percent of pass situation is poor；
3) bounds evaluation that the fish of single river barrier pass through difficulty are as follows:
Define the product for the fish percent of pass that D is single river barrier and the single river barrier in upstream to be evaluated, the meter of D
Calculate formula are as follows: D=Pn*Pn-1, PnFor the fish percent of pass of single river barrier to be evaluated, Pn-1Single river to be evaluated
The fish percent of pass of the single river barrier in the upstream of barrier；
Defining K is single river barrier to be evaluated at a distance from the single river barrier in upstream；
As D < 30%, K < 50, the scoring that the fish of single river barrier pass through difficulty is 1；
As D < 30%, [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 2；
As D<30%, K>150, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K < 50, the scoring that the fish of single river barrier pass through difficulty is 2；
When D ∈ [30%, 70%], [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 3；
When D ∈ [30%, 70%], K > 150, the fish of single river barrier pass through the scoring 4 of difficulty；
Work as D>70%, when K<50, the scoring that the fish of single river barrier pass through difficulty is 3；
Work as D > 70%, when [50,100] K ∈, the scoring that the fish of single river barrier pass through difficulty is 4；
Work as D > 70%, when K > 150, the scoring that the fish of single river barrier pass through difficulty is 5；
4) the habitat quantity marking mode of single river barrier is as follows:
When river length > 50km between the single river barrier in upstream, scoring is 5；
Between the single river barrier in upstream river length (40,50] km when, scoring is 4；
Between the single river barrier in upstream river length (35,40] km when, scoring is 3；
Between the single river barrier in upstream river length (30,35] km when, scoring is 2；
When the Chang Du≤30km in river between the single river barrier in upstream, scoring is 1；
5) the habitat quality evaluation method of single river barrier is as follows:
It is scored according to national water environment quality standard；
Reach water standard II class, scoring is 5, and habitat quality is excellent；
Reach water standard Group III, scoring is 4, and habitat quality is good；
Reach water standard IV class, scoring is 3, in habitat quality；
Reach water standard V class, scoring is 2, and habitat quality is poor；
Reach the bad V class of water standard, scoring is 1, and habitat quality is very poor.
3. a kind of river vertical communication evaluation method according to claim 2, which is characterized in that the 1 of the step 2)
In,
The diversity indices calculation formula of section are as follows:In formula, pi=Wki/Wk, WkiEqual in K section i category
Species number, WkEqual to the species number of K section, n is equal to the category number in k section, and m is equal to section's number；
The diversity indices calculation formula of category are as follows:In formula, qj=Wj/ W, WjEqual to the species in j category
Number, W are equal to total species number of fish, and p is equal to the category number of fish.
4. a kind of river vertical communication evaluation method according to claim 2, which is characterized in that the 3 of the step 2)
In, PnWith Pn-1Calculation with formula 1.
5. a kind of river vertical communication evaluation method according to claim 2, which is characterized in that the 5 of the step 2)
In, national water environment quality standard is GB3838-2002 standard.
6. a kind of river vertical communication evaluation method according to claim 1, which is characterized in that in the step 3, river
It is as follows to flow vertical communication degree calculating formula:
Wherein,C is the degree of communication of section；liIt is single river barrier i apart from downstream river
The distance of mouth, unit: km, liThe bigger destruction to connectivity is also bigger；L is each single river barrier away from the total of river mouth distance
With unit: km；M is the quantity of single river barrier；N is the quantity of evaluation index；aijFor i-th of single river barrier
J index scoring；Q is connectivity coefficient of colligation；
The evaluation method of river vertical communication degree are as follows:
When C value > 20, grading is preferably；
C value [15,20) when, it is rated preferably；
C value [10,15) when, it is rated；
C value [5,10) when, it is rated poor；
When C value < 5, it is rated difference.
7. a kind of river vertical communication evaluation method according to claim 6, which is characterized in that in the step 3, even
The scoring criteria of general character coefficient of colligation Q is as follows:
When average hundred kilometers of dam number < 1/100km, the value of Q is 1；
Average hundred kilometers of dam numbers [1,2) a/100km when, the value of Q is 0.75；
Average hundred kilometers of dam numbers [2,3) a/100km when, the value of Q is 0.5；
Average hundred kilometers of dam numbers [3,4) a/100km when, the value of Q is 0.25；
When average hundred kilometers of dam number >=4/100km, the value of Q is 0.1.
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| CN111401736A (en) * | 2020-03-16 | 2020-07-10 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method and device |
| CN112232691A (en) * | 2020-10-27 | 2021-01-15 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method and device, electronic equipment and storage medium |
| CN115034689A (en) * | 2022-08-10 | 2022-09-09 | 中国长江三峡集团有限公司 | Method and device for evaluating longitudinal connectivity of fishes in dammed rivers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111401736A (en) * | 2020-03-16 | 2020-07-10 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method and device |
| CN111401736B (en) * | 2020-03-16 | 2022-06-10 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method and device |
| CN112232691A (en) * | 2020-10-27 | 2021-01-15 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method and device, electronic equipment and storage medium |
| CN112232691B (en) * | 2020-10-27 | 2024-05-14 | 中国水利水电科学研究院 | River longitudinal connectivity evaluation method, river longitudinal connectivity evaluation device, electronic equipment and storage medium |
| CN115034689A (en) * | 2022-08-10 | 2022-09-09 | 中国长江三峡集团有限公司 | Method and device for evaluating longitudinal connectivity of fishes in dammed rivers |
| CN115034689B (en) * | 2022-08-10 | 2022-11-04 | 中国长江三峡集团有限公司 | Method and device for evaluating longitudinal connectivity of fishes in dammed rivers |
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