River network construction method used for biodiversity conversation and application thereof

Abstract

A river network construction method used for biodiversity conversation and an application of the river network construction method used for the biodiversity conversation analyze and study the river network using an ecological network theory. The river network construction method used for biodiversity conversation and an application of the river network construction method used for the biodiversity conversation belong to the technical field of ecological hydrology. The river network construction method comprises the steps that the position where hydraulic characteristics of the river obviously changes in object river system is defined as an edge of the river network, and the circulation channel between the two positions where the two hydraulic characteristics obviously changes is defined as a node of the river network. The invention further provides an identification method of key nodes in the biodiversity conversation based on river network analysis. A river network module constructed through the river network construction method used for the biodiversity conversation can truly and intuitively reflect the interaction among the elements in river ecological hydrological processes. Through a simple and mature method, the key nodes of the river network can be identified and a key reach in the river system can be identified, so that reliability and anti-interference capability of the river network are improved. In addition, the river network module is significant for the biodiversity conversation and water resource allocation and the like.

Description

technical field [0001] The invention belongs to the technical field of ecohydrology, relates to a method for constructing a river network for biodiversity protection and its application, and uses the ecological network theory to analyze and study river systems. Background technique [0002] With the rapid development of social economy, the process of urbanization is accelerating. Regional environment, especially in densely populated estuary areas, the important problems faced by the rapid urbanization process are regional landscape fragmentation and habitat area shrinkage, and the resulting spatial heterogeneity reduces the continuity of regional ecosystems. Normal ecological processes are blocked and ecological functions are reduced. Facing this series of ecological environment problems, a method of constructing an ecological network is proposed. This method connects the fragmented habitat patches to each other by restoring or rebuilding ecological corridors, thereby impro...

AI Technical Summary

Problems solved by technology

However, the research on protecting river biodiversity and improving river ecosystem services using ecological network theory and method system is not comprehensive and systematic because of the complexity of river structure and function, as well as the multiple management objectives of river protection and implementation in actual operation. different standards

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