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
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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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