Ecological basic flow calculation method and system capable of considering different states of river

Abstract

The invention discloses an ecological basic flow calculation method and system capable of considering different states of a river. The method comprises the following steps that: obtaining river runoff data from the river monitoring server of a river monitoring station; solving the mutational site of the runoff data of each river so as to determine river types, wherein the river types comprise three classes: water replenishing rivers subjected to disturbance by human, non water replenishing rivers subjected to disturbance by human and rivers which are not subjected to disturbance by human; and according to the river types, independently calculating the ecological basic flow of the river. By use of the method, according to different river types, the ecological basic flow of the river can be accurately calculated so as to perform an important meaning for biocenoses including observed river animals and plants.

Description

technical field [0001] The invention belongs to the field of ecological base flow calculation, and in particular relates to an ecological base flow calculation method and system considering different states of rivers. Background technique [0002] River ecological base flow is defined as the basic amount of water needed to maintain the stability of river plants and other biological communities, and the river's ecological environment and functions without damage. Its calculated value should be a long-term observation and relatively stable value. According to Tharme's summary of ecological-based flow calculation methods, the calculation methods can be roughly divided into four categories: hydrological methods, hydraulic methods, ecological flow analysis methods, and ecological environment simulation methods. [0003] At present, hydraulic methods, ecological flow analysis methods and ecological environment simulation methods are prone to problems such as insufficient ecologica...

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Problems solved by technology

However, it focuses on considering the inter-annual variation of flow, and downplays the gap between the flow of the river in the wet season and the dry season. There is no classification discussion for rivers with different functional positioning, and the staging percentage set in the method may not be able to meet the needs of fish during the spawning period.

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