Structure-process-function model based urban ecology safety evaluation method

An ecological security and functional model technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problems of no theoretical framework foundation, lack of system and integrity, etc., and achieve wide applicability, strong integrity and system, The effect of the simple calculation process

Inactive Publication Date: 2017-09-22
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

The existing ecological security evaluation does not have a certain theoretical framework for the selection of the index system for static security value evaluation, and lacks systematization and integrity.

Method used

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  • Structure-process-function model based urban ecology safety evaluation method
  • Structure-process-function model based urban ecology safety evaluation method
  • Structure-process-function model based urban ecology safety evaluation method

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0045] Such as figure 2 As shown, the ecosystem structure affects the ecosystem process, and the ecosystem structure and ecosystem process comprehensively affect the ecosystem function, thus forming the structural characteristics of the ecosystem of "Structure-Process-Function (SPF)". Ecosystem structural characteristics are the structural basis of ecological security assessment.

[0046] According to the structural basis of the above-mentioned ecological security assessment, determine the content of the ecological security assessment, specifically including the three aspects of ecosystem structural security, ecosystem process security and ecosystem functional security. Based on the conceptual framework of "structure-process-function", the analytic hierarchy process is used to determine the ecological security index system, and four levels ar...

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Abstract

The invention discloses a method for evaluating urban ecological security based on a structure-process-function model, comprising the following steps: (1) constructing an ecological security index system by using the analytic hierarchy process; (2) using elevation data, remote sensing image data, land use Type data and socio-economic and environmental data calculate the value of each described ecological security index element in the element layer; (3) carry out dimensional unification to the value of each described ecological safety index element; (4) calculate each described The weight of the ecological security index element value; (5) by carrying out weighted summation to each described ecological security index element value to obtain the corresponding described ecological system comprehensive security value of the target layer; (6) according to the comprehensive The safety value divides the urban ecological security level. The calculation process of the method of the invention is simple, the parameters can be adjusted according to the actual situation, and the applicability is wide.

Description

technical field [0001] The invention relates to a method for evaluating urban ecological security based on a structure-process-function model. Background technique [0002] The concept and content of ecological security are constantly improving, and its evaluation criteria and evaluation content will vary with different regions and different stages of development. The basic elements of ecological security mainly include environmental quality, system structure risk, material security, etc., and its main research directions include ecological environment risk assessment, ecological security and ecological service, ecosystem vulnerability assessment, ecological security management, etc. Ecological security includes static and dynamic aspects. The static value is the ecological security value of a certain state on the time cross section, such as the division of ecological security levels; the dynamic value is the "pressure-state-response" (Press -State-Response, PSR), a certain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0639G06Q50/26
Inventor 陈云浩丁广瑞
Owner BEIJING NORMAL UNIVERSITY
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