Regional water environment risk zoning method

Abstract

The invention provides a regional water environment risk zoning method comprising the steps that a driving force factor, a pressure factor, a state factor, an impact factor and a response factor of a DPSIR module are determined; a regional water environment risk assessment index system is constructed, and the constructed regional water environment risk assessment index system comprises a target layer, a system layer, a criterion layer and an index layer which reflect the regional water environment risk from different angles; the weight of each index is calculated by using the analytic hierarchy process and value assignment is performed, and then all the index systems are quantitatively graded; then the regional water environment risk value is calculated through a fuzzy comprehensive evaluation method; and the regions are divided into a high-risk region, a medium-risk region, a low-risk region and a no-risk region in a decreasing order according to the risk with ArcGIS acting as an auxiliary tool. According to the scheme, the regional water environment can be more accurately assessed so as to provide accurate basis for decision.

Description

technical field [0001] The invention relates to data analysis and processing technology in the field of water environment assessment, in particular to a regional water environment risk zoning method. Background technique [0002] Due to the rapid development of social economy, industry and agriculture, and the continuous acceleration of urbanization, the pressure on the environment in various regions of the world is also increasing. In the 1970s, the United States first proposed the concept of Environmental Risk Assessment (ERA), which was gradually recognized by Western countries such as Europe and the United States. As an important part of environmental risk assessment, water environment risk assessment (WERA) is a process of identifying various potential risks in the water environment and assessing the probability of water environment accidents on the basis of environmental risk assessment. As an important direction of ERA, it plays an important role in water environment...

AI Technical Summary

Problems solved by technology

However, with the rapid development of the regional economy, its environmental problems have gradually evolved into regional problems. Environmental risks have continued to accumulate, risk receptors such as the population have continued to increase, and the carrying capacity of resources and the environment is weak. As a result, once an environmental accident occurs, it may cause serious problems. as a result of

On April 30, 2015, the Political Bureau meeting of the Central Committee reviewed and approved the "Outline of the Beijing-Tianjin-Hebei Coordinated Development Plan", pointing out that promoting the coordinated development of the Beijing-Tianjin-Hebei region is a major national strategy and a need to promote the unification and coordination of resources and the environment. It is proposed that the process of Beijing-Tianjin-Hebei integration has been accelerated, while bringing opportunities for regional development, it also puts forward higher requirements for its sustainable development, and also brings greater challenges to the integrated protection and management of regional ecological environment.

[0008] However, there are few studies that can comprehensively use the above methods and consider them as a whole to assess the risk of regional water environment

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