Method for determining river environment flow process interval

Abstract

The invention provides a method for determining a river environment flow process interval, and belongs to the field of river ecological environment protection. The method comprises the following steps: step 1, determining river water ecological comprehensive partitions and river environment flow evaluation indexes; step 2, constructing a quantitative relation of river environment flow evaluation indexes of each river water ecological comprehensive partition; 3, determining a river comprehensive health evaluation standard; and 4, determining a river environment flow process interval under a single target and a river environment flow process interval under multiple targets, and obtaining a river environment flow guarantee rate under the current condition. According to the method, the river environment flow process intervals under different runoff situations, water qualities and water ecological health targets are determined, the traditional environment flow depicting mode is expanded tothe flow process intervals from the specific runoff amount, and environment flow management can be more reasonably and better supported.

Description

technical field [0001] The invention belongs to the field of river ecological environment protection, and specifically relates to a method for determining the process interval of river environmental flow, which is used for guiding river basin management work such as river ecological protection and restoration, rational allocation of water resources, and scientific scheduling of water conservancy projects. Background technique [0002] With the rapid development of the global economy and society, human activities have gradually strengthened the development and utilization of rivers. Human activities such as the development and utilization of water resources, the construction and regulation of water conservancy projects (reservoirs, sluices, etc.) China is a country with uneven distribution of water resources in time and space, intensive water conservancy projects, and serious water pollution. Since the 1980s, major rivers in my country, especially northern rivers, have faced...

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Problems solved by technology

[0004] From the above analysis, it can be seen that the environmental flow obtained by the existing technology is only a flow value or flow process, and the range of the environmental flow process corresponding to different health levels cannot be obtained.

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