Stream water quality evaluation method based on comprehensive index of macrobenthonic animals

A benthic, comprehensive index technology, applied in data processing applications, instruments, calculations, etc., can solve the problems of difficult to comprehensively, objectively and accurately reflect the water quality of streams, ignoring the evaluation of benthic functional traits and functional diversity, etc. The effect of convenient comprehensive evaluation

Pending Publication Date: 2022-05-31
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the past, the biological monitoring of macrobenthic water quality mostly used biological indices reflecting the structural properties of stream ecosystems, such as Shannon-Wiener index, Magriff index, etc., but the commonly used index methods usually ignore the function of benthic animals. It is difficult to comprehensively, objectively and accurately reflect the water quality of streams in the evaluation of traits and functional diversity

Method used

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  • Stream water quality evaluation method based on comprehensive index of macrobenthonic animals
  • Stream water quality evaluation method based on comprehensive index of macrobenthonic animals
  • Stream water quality evaluation method based on comprehensive index of macrobenthonic animals

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Experimental program
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Embodiment 1

[0045] A method for evaluating the water quality of a stream based on a comprehensive index of macrobenthos, comprising the following steps:

[0046] S1. Sampling of benthic animals: Select several sampling points at the bottom of the stream, the total number of sampling points is 36, and the distance between every two adjacent sampling points is 8km, and a sampling network is arranged at each sampling point for benthic animal sampling , the sampling net is a D-shaped net and a Sauber net with an opening area of ​​0.3m × 0.3m and an aperture of 60 meshes;

[0047] S2. Sample identification: the samples collected in step S1 are rinsed with clean water and filtered with a 60-mesh sieve. The filtered samples are stored in an ethanol solution with a mass concentration of 75%, and the samples are identified by a microscope in the laboratory. species or genus;

[0048] S3. Determination of physical and chemical indicators: the physical and chemical indicators of the stream water bo...

Embodiment 2

[0069] The difference between this embodiment and Embodiment 1 is that the number of sampling points in step S1 is different.

[0070] S1. Sampling of benthic animals: Select 30 sampling points at the bottom of the stream, and set up a sampling network at each sampling point for benthic animal sampling. The distance between every two adjacent sampling points is 5km, and the sampling network is a D-shaped network. And the opening area is 0.3m×0.3m, and the aperture is 60 mesh Sauber mesh.

Embodiment 3

[0072] The difference between this embodiment and Embodiment 1 is that the number of sampling points in step S1 is different.

[0073] S1. Sampling of benthic animals: 40 sampling points were selected at the bottom of the stream, and a sampling network was arranged at each sampling point for benthic animal sampling. The distance between each two adjacent sampling points was 10km, and the sampling network was a D-shaped network. And the opening area is 0.3m×0.3m, and the aperture is 60 mesh Sauber mesh.

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Abstract

The invention discloses a stream water quality evaluation method based on comprehensive indexes of large benthonic animals, and relates to the technical field of water quality detection, and the method comprises the following steps: S1, sampling benthonic animals; s2, sample identification; s3, measuring physical and chemical indexes; s4, dividing functional characters; s5, calculating a functional diversity index; s6, calculating a community diversity index; s7, correlation analysis and screening; and S8, performing evaluation grade division. According to the stream water quality evaluation method, stream water quality biological evaluation is carried out in a mode of combining the Shannon-Wiener index H'with the functional diversity index and the physicochemical index, the evaluation method considers response of community structure and function change to environmental influence at the same time, and the structure and the function of a stream ecosystem can be comprehensively represented; and the stream water quality condition is relatively accurately evaluated.

Description

technical field [0001] The invention relates to the technical field of water quality detection, in particular to a stream water quality evaluation method based on a comprehensive index of macrobenthos. Background technique [0002] Benthos are groups of aquatic animals that live on the bottom of bodies of water for all or most of their life history. In addition to settled and active life, the forms of habitat are mostly fixed on hard substrates such as rocks and buried in soft substrates such as sediment. In addition, there are also benthic species that are attached to the surface of plants or other benthic animals, as well as inhabit the intertidal zone. In terms of feeding methods, most of them are ingested by suspended matter and sediment. Mostly invertebrates, is a complex ecological group. According to its size, it is divided into large benthic animals and small benthic animals. [0003] Macrobenthos are the most suitable biological indicator groups to reflect the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06
CPCG06Q10/06393G06Q10/067Y02A40/81
Inventor 赵瑞马千里姚玲爱苟婷梁荣昌冯雁辉赵学敏
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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