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Application of Improved Gray Hierarchy Evaluation Method in Assessment of Regional Ecological Security

Abstract

生态系统是人类社会和环境的“联接点”,生态系统的变化在所有环境问题中的地位日益醒目,生态安全研究已成为国际资源与环境可持续发展研究的前沿课题。 本文首先综述了生态安全的概念和国内外研究现状,然后阐述了生态安全的基本理论与研究方法,再按照生态安全评价标准的基本要求与原则,运用PSR概念模型构建了区域生态安全评价指标体系,并建立了一个综合评价模型。 本文根据压力-状态-响应概念模型,结合我国存在的主要生态环境问题,从资源环境压力、资源生态状态、人文环境响应等三个方面构建了包含31个指标的区域生态安全评价体系,综合运用熵权法和德尔菲法以实现对评价指标的组合赋权,这克服了主客观赋权各自的局限性,并...Since ecosystem is a connection between human beings and nature and is playing a more and more crucial role in environment issues, the research of ecological security has stand at the foreland of science, especially of that involving resources and environmental sustainability. In this article we will first introduce the concept of ecological security and some relevant research results, ...学位:理学硕士院系专业:数学科学学院_应用数学学号:1902010115252

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