Regional environment risk evaluation and division method based on risk field

Abstract

The invention discloses a regional environment risk evaluation and division method based on a risk field. The method comprises: firstly, a regional environment risk evaluation index system framework is established based on a DPSIR model, the DPSIR model serves as a framework, regional ecological environment safety is guaranteed, an environment function area is effectively guided to serve as a target, and connotation of indexes is determined with analysis of an environment risk forming mechanism serving as a benchmark; then, evaluation index screening is carried out, and standardization processing is carried out on indexes; secondly, regional environment risk comprehensive level grading is carried out, the regional ecological environment safety comprehensive index is adopted for representing the regional ecological risk overall condition, finally regional environment risk zoning is carried out, and a risk acceptable area, a risk early warning area and a risk reduction area are determined. According to the invention, a regional environment grading and partitioning method system based on receptor vulnerability assessment and risk source hazard assessment is established, so that threats to ecological environment safety caused by prominent layout environment risks and high environmental pollution accidents at present are reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental risk assessment and zoning, and in particular relates to a regional environmental risk assessment and zoning method based on a risk field. Background technique [0002] At present, the objects of environmental risk assessment are mainly construction projects or single pollution accidents, while ignoring the domino effect of risk accidents and the coupling effect of multiple risks. For the region, especially when there are multiple environmental risk sources in industrial parks, because only the impact of a single risk source is considered, the following phenomenon often occurs: for a single project, its environmental risk is acceptable, but due to the There are multiple risk sources in the region, and the interaction of multiple risk sources increases the risk of the region, increases the frequency of accidents and their impact, resulting in frequent occurrence of regional environmental poll...

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Problems solved by technology

[0002] At present, the object of environmental risk assessment is mainly construction projects or single pollution accidents, while ignoring the domino effect of risk accidents and the coupling effect of multiple risks

For the region, especially when there are multiple environmental risk sources in industrial parks, because only the impact of a single risk source is considered, the following phenomenon often occurs: for a single project, its environmental risk is acceptable, but due to the There are multiple risk sources in the region, and the mutual influence of multiple risk sources increases the risk of the region, increases the frequency of accidents and their impact, resulting in frequent occurrence of regional environmental pollution incidents and unacceptable regional environmental risks.

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