A Calculation Method of Ecological Water Requirement in Ayu Fattening Period

Abstract

The invention relates to a calculating method for the ecological water demand of plecoglossus altivelis in the fattening period. The calculating method comprises steps as follows: analyzing functionalcharacteristics of fattening farm habitats of the plecoglossus altivelis in the fattening period; analyzing characteristics of periphytic algae; analyzing factors affecting baits of the plecoglossusaltivelis; calculating water velocity and water demand in non-flood period; calculating water velocity and water demand of a fattening farm of the plecoglossus altivelis in the flood period. The conventional calculation for the ecological water demand is short of analysis for problems about the environment required by actual survival and growth of organisms. According to the method, the plecoglossus altivelis which is an endangered species is selected as an ecological protection objective, the functional characteristics of the fattening farm habitats of the plecoglossus altivelis in the fattening period are analyzed firstly, then flow conditions required by the habitat functions are further analyzed, and finally, the calculating method for the proper ecological water demand required by survival and growth of the plecoglossus altivelis in the fattening period is proposed. With the calculation of the ecological water demand, habitat environments and functions of endangered fishes are repaired and improved, the calculation and evaluation method of the ecological water demand is enriched and developed, and scientific basis is provided for biodiversity protection and water resource scheduling management.

Description

technical field [0001] The invention relates to a method for calculating the ecological water demand in the fattening period of sweetfish, which is a hydrological calculation method for ecological protection, and a method for calculating the ecological water demand in the fattening period of sweetfish based on the water flow conditions of the fish protection target life cycle. Background technique [0002] Satisfaction of water ecological water demand is the premise of river ecosystem stability and biodiversity protection. There have been more than 60 years of research on the ecological water demand of rivers at home and abroad, and more than 200 methods have been proposed. Broadly divided into four categories:. my country's water conservancy and hydropower industry has also promulgated "Guidelines for Assessment of Ecological Water Demand of Rivers and Lakes" (Trial) (SL / Z479-2010) and "Technical Guidelines for Environmental Impact Assessment of River Ecological Water, Low...

AI Technical Summary

Problems solved by technology

As we all know, the relationship between the water ecosystem and the river's hydrological situation is very complicated. The above-mentioned analysis methods of the ecological water demand of rivers such as the Tennant method, the flow-duration curve method, and the wet cycle method lack the coupling of ecological habits and water flow conditions for specific protected species. The analysis will affect the accuracy of the calculation results

This calculation deviation directly affects the regulation of river water resources, that is, it affects the production, living and ecological water allocation of water resources, and also affects the effect of ecological protection.

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