Index system construction method of urban ecological safety evaluation

Abstract

The invention is specific to cities with serious ecological environment problems and support systems thereof, providing an intuitive, accurate, workable index system construction method of ecological safety evaluation including S-P-R mould, filed investigation, environmental problems and factor recognition, index system primary construction, questionnaire survey and index sieving. Based on the S-P-R mould, the ecological environmental problems and probable factors of an object city are primarily determined by material analysis and field investigation; then questionnaire survey is designed, and governmental and scientific experts are invited to take part in the investigation, and a plurality of main ecological environmental problems and corresponding main factors are determined; a state layer, pressure layer and a responding layer index expressing each problem and main factors are found out, and the evaluation index system is primarily constructed; at last, the questionnaire survey is designed, experts are inquired with rationality and availability of data problems, the indexes are sieved, and the evaluation index system about ecological safety is constructed.

Description

technical field [0001] The invention relates to the technical field of environmental science and urban ecological security research, especially a combined application method of "S-P-R model + field investigation + environmental problems and cause identification + initial establishment of index system + questionnaire survey and index screening", which is widely applicable to people with Various cities with different ecological environment characteristics. Background technique [0002] With my country's rapid economic development and urbanization and urbanization, the urbanization level has increased from 7.3% in 1949 to 45.7% in 2008, and it is expected to reach 50% in 2020. The rapid urbanization process has brought about serious ecological and environmental problems. At present, about half of the more than 600 cities in the country are short of water, and 90% of the urban waters are seriously polluted. Every year, the excess death toll due to urban air pollution in the cou...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the characteristic of urban composite ecological system, comprehensively considers various hidden danger factors such as environmental pollution, resource shortage, and ecological damage, and establishes a system including "S-P-R model + field investigation + environmental problem and cause identification + initial construction of index system + questionnaire survey and The construction method of the ecological security evaluation index system that can characterize the hidden dangers of the specific urban ecological environment based on "index screening"

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