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Method for evaluating shallow lake fishery environment by using microbial food web efficiency

A food web and shallow water technology, applied in the direction of testing water, material inspection products, etc., can solve the problems of specific evaluation of the fishery environment, qualitative evaluation methods cannot be given, and cannot play a guiding role in fishery operations, so as to achieve the effect of protecting the environment

Inactive Publication Date: 2016-03-09
江苏省渔业技术推广中心
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Problems solved by technology

There is no unified standard method for the evaluation of fish growth suitability in rivers and lakes. In the past, qualitative methods were mostly used in the evaluation of fish growth suitability. However, qualitative evaluation methods cannot give a specific evaluation of fishery environment, nor can they Fishery management plays a guiding role

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  • Method for evaluating shallow lake fishery environment by using microbial food web efficiency

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Embodiment 1

[0036] Embodiment 1: This embodiment provides a method for evaluating the fishery environment of shallow water lakes using microfood web efficiency, and proceeds as follows:

[0037] S1. Determination of phytoplankton primary productivity, bacterial productivity and mesozooplankton productivity in shallow lakes;

[0038] S2. Microfood web efficiency FWEp of shallow lakes = mesozooplankton productivity / (phytoplankton primary productivity + bacterial productivity);

[0039] S3. Evaluate the fishery environment of shallow water lakes through microfood web efficiency FWEp. The smaller the value of microfood web efficiency FWEp, the worse the fishery environment quality of shallow water lakes.

[0040] The microfood web efficiency FWEp will decrease with the increase of lake eutrophication, the smaller the microfood web efficiency is, the worse the fishery environment quality will be.

[0041]In this embodiment, the evaluation criteria for the fishery environment quality of larg...

Embodiment 2

[0065] Embodiment 2: This embodiment provides a kind of method that utilizes microfood web efficiency to evaluate the fishery environment of shallow lake lake, and the step of evaluation is basically the same as in embodiment 1, also is by primary productivity of phytoplankton, bacterial productivity and mesozooplankton After the productivity is measured, the fishery environment of shallow lakes is evaluated by scientific calculation methods. The difference is that in this example, the primary productivity of phytoplankton, bacterial productivity and medium-sized zooplankton productivity in shallow lakes are estimated by empirical models. method, as follows:

[0066] (1) Determination of phytoplankton chlorophyll a in shallow lakes to obtain the concentration Chla of chlorophyll a.

[0067] The method for measuring phytoplankton chlorophyll a is specifically:

[0068] Experimental supplies:

[0069] Model 721 spectrophotometer (or similar products), suction filter (47mm stai...

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Abstract

The present invention discloses a method for evaluating a shallow lake fishery environment by using microbial food web efficiency. The method comprises that: S1, phytoplankton primary productivity, bacterial productivity and medium-sized zooplankton productivity in shallow lake are determined; S2, the shallow lake microbial food web efficiency FWEp is equal to medium-sized zooplankton productivity / (phytoplankton primary productivity + bacterial productivity); and S3, the shallow lake fishery environment is evaluated through the microbial food web efficiency FWEp, wherein the higher the microbial food web efficiency FWEp value, the better the shallow lake fishery environment quality. According to the present invention, the shallow lake fishery environment is subjected to the comprehensive evaluation so as to provide the basis for the scientific management of fishery and water environments and the rational development of lake ecosystems, and provide important guiding significance.

Description

technical field [0001] The invention relates to a method for evaluating the fishery environment of shallow water lakes, in particular to a method for evaluating the fishery environment of shallow water lakes by using the efficiency of micro food webs. Background technique [0002] The evaluation of fish growth suitability in rivers and lakes is a key link in the estimation of minimum ecological flow and ecological comprehensive evaluation in river basins, and the evaluation of fish growth suitability in rivers is also closely related to fish migration. There is no unified standard method for the evaluation of fish growth suitability in rivers and lakes. In the past, qualitative methods were mostly used in the evaluation of fish growth suitability. However, qualitative evaluation methods cannot give a specific evaluation of fishery environment, nor can they Fishery management plays a guiding role. Contents of the invention [0003] Purpose of the invention: The purpose of ...

Claims

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Application Information

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IPC IPC(8): G01N33/18
CPCG01N33/18
Inventor 段翠兰樊宝洪张永江胡志新邹勇杨柳燕陈静樊祥科郑浩张莉杨振
Owner 江苏省渔业技术推广中心
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