摘要
依据生态弹性力的概念,构建了北京市生态弹性力的指标体系,并利用SPSS软件确定各指标的权重,分析和评价了2001—2008年该地区生态弹性力的发展状况。结果显示:生态弹性力指数在研究时段呈现较大波动,但整体呈现逐渐增大的趋势。2001—2003年呈下降趋势,指数由-0.248降至-0.976;2004—2008年指数明显上升,由0.071增至1.047,其中2006年波动较大为-0.261;结果表明在多项措施的实施下,北京市的生态环境质量得到了逐步改善。
The index system for ecosystem resilience in Beijing City was established according to the definition of ecosystem resilience.The weight of each index was calculated by software SPSS.The developing trend of ecosystem resilience from 2001 to 2008 was analyzed and assessed.Result indicated that the exponential of ecosystem resilience revealed obvious fluctuations in the study period,but it exhibited an increasing trend on the whole.During 2001-2003,the exponential decreased from-0.248 to-0.976,while it increased quickly from 0.071 to 1.047 during 2004-2008,with a low value of-0.261 in 2006.The research on ecosystem resilience showed that the eco-environment quality in Beijing City has been greatly improved with the implement of various measures.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2011年第2期97-100,共4页
Journal of Northeast Forestry University
基金
国家自然科学基金(30770412)
国家"十一五"科技支撑项目(2006BAC01A13)
山东省科技计划项目(2008GG10006024
2008GG3NS07005)
关键词
生态弹性力
主成分分析
北京市
Ecosystem resilience
Principal component analysis
Beijing
