Construction method of coastal zone ecological safety evaluation model

Abstract

A construction method of a coastal zone ecological safety evaluation model comprises the steps of collecting index data; generating an index year spatial distribution map; calculating an ecosystem service value; constructing an ecological safety evaluation index system covering a physical index, a pollution index and a social-economical index of a coastal zone; performing standardization processing on the index of each year by different methods; partitioning an ecological safety index; calculating the ecological safety index by an equal weight method; and disclosing an influence mechanism of land activity on a coastal zone ecosystem service function and regional ecological safety and a spatial and temporal variation rule of the ecological safety, and screening a main factor affecting the coastal zone ecological safety. The method is simple and objective and is high in repeatability, the influence mechanism of land activity on the coastal zone ecosystem service function and the ecological safety and the spatial and temporal variation rule of the ecological safety are disclosed, the current state of the coastal zone ecological safety can be accurately and scientifically evaluated, and reliable theory and technical support are provided for constructing a coastal zone ecological safety early-warning mechanism and achieving ecological safety management.

Description

technical field [0001] The invention relates to a method for constructing a coastal zone ecological security evaluation model, and belongs to the technical field of coastal zone ecological environment and ecological security assessment. Background technique [0002] The coastal zone is the zone where the ocean and land interact, that is, the transition zone from the ocean to the land. The coastal ecosystem is an ecosystem located at the junction of the shallow sea and the land. It is an ecological ecotone between the land and the ocean, and it is also the area where the land-sea interaction is the strongest. At the same time, the coastal zone is an area where human activities are concentrated, and its special geographical location and physical and chemical characteristics make it easier to receive and store pollutants from land waters, making the coastal zone environment more likely to deteriorate. After decades of rapid social and economic development in China, a large amo...

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Problems solved by technology

[0003] At present, the research methods of ecological security in the coastal zone are mainly the ecological security research based on the conceptual model and the ecological security research method based on the landscape pattern. These two methods are based on the research model of the terrestrial ecological security. Also, the land area is more than the sea area, and there is a lack of scientific explanations for the complex relationship between the drive of land area activities, the response of ecosystem service functions, and the realization of ecological security

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