Risk fuzzy synthetic evaluation method for regional water environment

Abstract

The invention provides a risk fuzzy synthetic evaluation method for a regional water environment. The method includes the steps that a membership degree function is established according to the hierarchical structure relation of a target level, a system level, a criterion level and an index level, and the membership degrees of indexes of a regional water environment risk evaluation index system to estimation scales are worked out; a structural model is established according to the hierarchical relation of the index system, and a fuzzy relation matrix is established through the relative membership degree function; a final evaluation result is determined based on the maximum membership degree principle. By means of the technical scheme, the regional water environment can be evaluated more accurately to provide an accurate basis for decision making.

Description

technical field [0001] The invention relates to data analysis and processing technology in the field of water environment risk assessment, in particular to a fuzzy comprehensive assessment method for regional water environment risk. 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 im...

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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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