基于“自然-人文-响应”模型的生态脆弱性评价研究

Ecological vulnerability assessment based on ‘nature-humanity-response’model

本文在分析研究区自然人文状况以及经济发展状况的基础上,选择影响生态脆弱性的因子,构建了生态脆弱性“自然-人文-响应”的指标评价模型,并应用熵权法,对研究区不同地区的生态脆弱性程度进行评价与对比分析。从整体上来看,研究区生态脆弱性表现为中部盆地高,沿北部东部南部周边降低的“玉龙”状形式。从小格局上来说,分为高水平生态脆弱区,主要由人文因素和响应表现影响;较高水平生态脆弱区,主要由自然成因和人文因素影响;中等水平生态脆弱区,主要由自然成因和响应表现影响;较低水平生态脆弱区,主要由自然成因导致。

Based on the analysis of the natural and human conditions and economic development in the study area,this paper selects the factors that affect the ecological vulnerability,constructs the index evaluation model of ‘nature-humanity-response’of ecological vulnerability,and applies the entropy weight method to evaluate and compare the ecological vulnerability of different regions in the study area.On the whole,the ecological vulnerability of the study area is high in the central basin and low in the southern periphery of the northern east.From the small pattern,divided into high-level ecologically fragile areas,mainly by human factors and the results of the impact;higher level of ecologically fragile areas,mainly by natural causes and human factors;medium level ecologically fragile areas include,mainly affected by natural causes and results;low-level ecologically fragile areas are mainly caused by natural causes.