摘要
基于驱动力-压力-状态-影响-响应(DPSIR)模型,构建了一个包括36个指标变量的生态安全评价指标体系对我国2004年-2013年的生态安全状况进行评价分析。在利用层次分析法和熵值法求出主观权重和客观权重的基础上,求其综合权重,然后计算我国生态安全综合指数,并对我国生态安全指数进行具体分析。在上述分析的基础上,建立双对数线性回归模型,对驱动力、压力、状态、影响和响应五个因素的贡献度进行研究分析,得出就各因素之于生态安全的贡献来看,压力因素对我国生态安全状况的贡献度最大,状态因素对我国生态安全状况的贡献度最小。
Based on the driving force- pressure- state- impact- response（ DPSIR） model the evaluation system that includes an eco- safe 36 index variables was built,and the ecological situation in China from 2004 to2013 were analyzed. By using AHP and entropy weights,the subjective and objective weights were gotten,the comprehensive weights were calculated,and then the composite indexes of ecological security were calculated and discussed concretely. Based on that,the double log linear regression mode was established,the contributions of five factors which include driving force,pressure,state,impact and response on ecological security were analyzed. From the view of the factors＇ contribution degree to the ecological security,the contribution of the pressure factor was the largest,the contribution of the state factor was the smallest.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2016年第6期1-5,共5页
Journal of Arid Land Resources and Environment
基金
中央高校重大培育项目(13LZUJBWZB00)资助
