Investigation tool and investigation method for diversity of stream aquatic organisms

The invention belongs to the technical field of water ecology monitoring and investigation, and discloses an investigation device and investigation method suitable for aquatic organisms in water areas with directional water flow such as mountainous rivers and streams, the investigation device comprises at least one sampling unit structure, the sampling unit structure comprises a pipe body, a sampling net and a sampling collector, one end of the sampling net is fixed at the end of the pipe body, the other end of the sampling net is connected with the sampling collector, and the inner diameter of the sampling collector is smaller than that of the pipe body. The problem in the diversity survey of the aquatic organisms in the stream water body is well solved, the working efficiency of the survey is improved, and non-contact survey has small damage to the ecological environment and facilitates the protection of the ecological environment. 本发明属于水生态监测调查技术领域，公开了一种适用于山区河流、溪流等有定向水流水域的水生生物的调查装置及调查方法，包括至少一个采样单元结构，采样单元结构包