基于PSR模型的湖北省县域森林生态安全评价及时空演变  

County Forest Ecological Security Evaluation and Spatial Analysis in Hubei Province Based on PSR and GIS

作　　者：冯彦[1] 郑洁[1] 祝凌云[1] 辛姝玉[1] 孙博[1] 张大红[1] 

机构地区：[1]北京林业大学经济管理学院,中国北京100083

出　　处：《经济地理》2017年第2期171-178,共8页Economic Geography

基　　金：国家林业局2014年林业重大问题调研课题(ZDWT201415)

摘　　要：以湖北省85个区县为研究对象,基于PSR(Pressure-State-Response)模型,利用熵权法与G1法确定综合权重,根据综合指数法计算湖北省森林生态安全指数,并分析比较1999—2014年湖北省森林生态安全变化,在GIS技术支持下对湖北省县域森林生态格局进行空间相关性分析。结果表明:湖北省县域森林生态安全状况整体良好;森林覆盖率、单位GDP能耗、人口密度等指标权重较大;县域森林生态安全水平地区分布不平衡,西部水平最高,东部次之,中部最低,1999—2014年湖北省森林生态安全指数变化较小;县域森林生态安全指数呈现显著的空间自相关性和空间集聚性,高—高聚类显著性更强,大多集中于湖北省西部地区。Taking case of Hubei＇ s 85 counties, the paper is based on PSR model. County forest ecological security is evaluated and compared from 1999 to 2014 by entropy weight and G1 and comprehensive index, and ESDA is used to analyze spatial variability of forest ecological security based on GIS. The results show that forest cover rate, energy consumption per unit GDP and population density index weight are bigger. Hubei ecological security index is better overall, however, its distribution is unbalanced in the different countries and the westem forest ecological security is the highest, the eastem is higher. County forest ecological security index changes a little between 1999 and 2014. The county forest ecological security index in Hubei shows a strong trend of spatial auto correlation and spatial connection, and highhigh clustering is more significant and is focused on the east.

关 键 词：生态文明 国家生态安全 森林生态安全 评价体系 GIS 空间自相关 湖北 

分 类 号：F316.299[经济管理—产业经济]