Method for evaluating ecological safety of coastal zone

Abstract

The invention discloses a coastal zone ecological security evaluation method, comprising the following steps: 1. Screening coastal zone ecological security evaluation indicators based on marine health index and urban ecological security; 2. Constructing a coastal zone ecological security evaluation index system based on a PSR model; 3. Index data collection and dimensionless; 4. Analytic hierarchy process to determine the subjective weight of the evaluation index; 5. Entropy value method to determine the objective weight of the evaluation index; 6. Determine the comprehensive weight of each index; 7. Coastal ecological security index calculation and evaluation. The evaluation method of the present invention can well reflect under the background of rapid urbanization and industrialization and large-scale human development activities, the safety status of the ecological environment in the coastal zone and the main pressure factors it bears, and can provide a basis for the protection of the ecological environment in the coastal zone area in the future. and management provide a certain theoretical basis.

Description

technical field [0001] The invention relates to the technical field of coastal zone ecological security, in particular to an evaluation method for coastal zone ecological security. Background technique [0002] As a geographical unit where the marine system and the land system are connected, compounded and intersected, the coastal zone is the most frequent and concentrated area of ​​material, energy and information exchange. A base for marine development and a bond of foreign trade and cultural exchanges have very important economic, social and political values. With the rapid development of the economy and the acceleration of urbanization, the intensity of human development of the coastal zone is increasing. The coastal zone is not only exposed to risks such as storm surges and land subsidence, but also faces risks from large-scale and high-intensity human development activities. A series of ecological and environmental problems, such as the loss of coastal wetlands, the d...

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Problems solved by technology

[0004] In order to solve the deficiencies and existing problems in the prior art, the present invention provides a coastal zone ecological security assessment method, which solves the lack of comprehensive and effective ecological security assessment research for coastal zones with high population pressure and active economy in the prior art. The problem with the rating system

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