Experiment device for research of suitable hydrologic conditions of fish habitat

Abstract

The invention discloses an experiment device for research of suitable hydrologic conditions of a fish habitat. The experiment device comprises an outer wall, an energy consumption tank, a habitat experiment area, a water pump and the like, wherein the fish habitat experiment area is the core area of the model. Bottom plates of different heights are arranged in the experiment area, so that a step-type fish habitat is constructed, and contrastive analysis of different water depth conditions is achieved; each bottom plate is provided with four different types of substrates, namely grassland, bare land, gravel and cobble in sequence. According to the experiment device, focusing on the range of the suitable hydrologic conditions of a fish spawning period habitat and threshold analysis, based on the single-variable principle, in the condition that the other factor conditions are controlled to be consistent, fish upstream processes in different situations are compared, the passing condition of fish upstream and migration in each river is recorded, and the influence of water depth changes on fish migration is explored.

Description

technical field [0001] The invention relates to the technical field of river ecological water demand research, in particular to an experimental device for studying suitable hydrological conditions of fish habitats. Background technique [0002] With the gradual deepening of the understanding of ecological restoration and species diversity protection, research on ecological water demand based on biological needs has received extensive attention. The study of fish behavior characteristics is the basic work of river ecological water demand research, but it is still in its infancy in our country. Existing research basically focuses on field observations, and most of them use the method of catching fish eggs to estimate the location of spawning grounds, and Combined with hydrological observation data to judge fish spawning water depth, flow velocity and substrate conditions and other preferences. The indoor test design is mainly aimed at testing the swimming ability of fish, tha...

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Problems solved by technology

[0003] In China, the experimental research on the suitable hydrological conditions for fish habitat and spawning tends to be blank at this stage, and the research on the migration characteristics of fish mainly focuses on the fish swimming ability test for fishway design, but the single-tank model experiment lacks intuition. Compared with reference, it is impossible to strictly do single-factor variable research

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