Coastal city water safety threat assessment method

Abstract

The invention discloses a coastal city water safety threat assessment method, and belongs to the technical field of environmental protection. The assessment method comprises the following steps: S1, establishing a coastal city water safety threat evaluation index system; s2, according to the evaluation index system and the determined evaluation range, evaluating the safety of the coastal city water by adopting a fuzzy comprehensive evaluation method based on a principal component analysis method; and S3, analyzing main influence factors, and elastically analyzing the influence of the change ofthe influence factors on the overall water safety of the lakeside city, namely evaluating the water safety threat. According to the evaluation method provided by the invention, each level of index condition is quantitatively represented by the membership degree of each condition level; the water safety grade is determined according to a fuzzy comprehensive evaluation method, and the problem thatindexes cannot be quantified is solved; and the influence of index factor changes on the overall water safety sensitivity of the lakeside city is revealed for the lakeside city through elastic analysis.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a water safety threat assessment method for a city near a lake. Background technique [0002] With the intensification of the global resource crisis, the concept of national security has undergone major changes, and water security has become an important content of national security. Urban water security is an important part of the overall water security of large river basins and some small areas. In recent years, lakeside cities have paid more attention to water security and the sustainable development of urban society, economy, ecology and environment. Therefore, how to ensure the water safety of the lakeside city to the greatest extent and how to assess water safety threats are fundamental and strategic issues in urban development. [0003] In terms of water security evaluation research, the nature of water security research has changed from disciplinary to c...

AI Technical Summary

Problems solved by technology

This has led to different scholars choosing different water security evaluation index systems, and there may be great differences between the systems.

[0007] (2) Insufficient quantitative analysis

Some scholars at home and abroad have also begun to try quantitative measurement of water security issues, but there are few studies

[0009] (3) The robustness of indicators is limited

[0010] The indicators established by some quantitative analysis studies have problems such as confusion between special evaluation and comprehensive evaluation, over-emphasis on "hard" indicators and neglect of "soft" indicators, indicators are not systematic, and some information overlaps.

Some indicator systems comprehensively cover the connotation of regional water security, however, the indicator system is too large, it is difficult to ensure the independence of indicators

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