Water environmental risk source risk representing method in drainage basin transboundary region

Abstract

The invention provides a water environmental risk source risk representing method in a drainage basin transboundary region. The method is used for evaluating the risk level of a risk source of the drainage basin transboundary region. The risk source of the transboundary region is divided into five categories including a surface source, production enterprises, a centralized treatment place of waste, a chemical storing site and transportation. The method includes the fives steps that first, a risk source risk index system of the transboundary region is constructed, the risk index systems of the five categories of risk sources respectively comprise three first-level indexes and a plurality of second-level indexes, the numbers of the second-level indexes in the risk index systems are different, and the indexes comprise three risk levels of the high risk level, the middle risk level and the low risk level; an information database of the risk sources of the transboundary region is established, values are assigned to all the second-level indexes, and the values of the all the second-level indexes are standardized to [0,1]; then, fuzzy weights of the indexes are determined; next, a fuzzy integration method is adopted for respectively calculating the risk indexes of the risk sources, the self-purification index of environmental mediums, and the vulnerability index of risk receiving bodies; finally, the risk indexes of the risk sources are calculated through the fuzzy integration method so that the risk levels of the risk sources can be represented.

Description

technical field [0001] The invention belongs to a risk characterization method for water environment risk sources in transboundary areas of watersheds, and is a risk characterization method for water environment risk sources in transboundary areas of watersheds based on risk source risk index calculation. It is especially suitable for the risk characterization and assessment of water environment risk sources in transboundary areas of large river basins. Background technique [0002] Due to the problems of my country's environmental management system and operating mechanism, water pollution disputes across administrative regions in my country's river basins have always existed. However, in the past 20 to 30 years, with the rapid economic development, cross-administrative water pollution has shown an upward trend, and cross-administrative pollution disputes have intensified, resulting in huge socio-economic harm and arousing strong social repercussions. A statistical analysis...

AI Technical Summary

Problems solved by technology

At present, there is no quantitative characterization method specifically for water environment risk sources in transboundary areas of river basins. Therefore, in view of the characteristics of various types of risk sources, strong regional sensitivity, and high risk in transboundary areas of river basins, a more practical water environment risk in transboundary areas of river basins should be constructed. Source risk characterization method has important practical significance

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