首页 | 本学科首页   官方微博 | 高级检索  
   检索      

基于能值分析的唐山市生态安全评价
引用本文:曹明兰,李亚东.基于能值分析的唐山市生态安全评价[J].应用生态学报,2009,20(9):2214-2218.
作者姓名:曹明兰  李亚东
作者单位:1. 北京大学环境科学与工程学院,北京,100871
2. 北京工业职业技术学院,北京,100042
基金项目:中国工程院重大咨询项目
摘    要:基于“压力-状态-响应(PSR)”模型,运用能值分析方法构建了城市生态安全评价体系和城市生态安全指数(EUESI),并评价了1995—2005年间唐山市生态安全水平的变化.结果表明:1995—2005年间,唐山市生态安全水平呈先升高后降低的趋势;基于能值分析的研究区城市生态安全指数由1995年的0.017增加到1996年的0.022后逐年降低,2003年进入不安全状态.基于能值分析的城市生态安全评价方法克服了传统评价体系的指标繁多、重复、单位不统一和可比性差等缺点,更加真实客观地反映了城市生态安全状态,为城市生态环境的管理和决策提供了科学依据.

关 键 词:压力-状态-响应模型  能值分析  城市生态安全
收稿时间:2009-02-02

Ecological security assessment of Tangshan City based on emergy analysis
CAO Ming-lan,LI Ya-dong.Ecological security assessment of Tangshan City based on emergy analysis[J].Chinese Journal of Applied Ecology,2009,20(9):2214-2218.
Authors:CAO Ming-lan  LI Ya-dong
Institution:College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;Beijing Polytechnic College, Beijing 100042, China
Abstract:Based on'pressure-state-response'model and by using emergy analysis method,the urban ecological security assessment system and urban.ecological security index(EUESI)were constructed,and the variation of ecological security level of Tangshan City in 1995-2005 was evaluated.During this period,the ecological security level of the City increased first and decreased then.The EUESI increased from 0.017 in 1995 to 0.022 in 1996,then dropped yearly,and became unsecure in 2003.The urban ecological security assessment method based on emergy analysis overcame the disadvantages of conventional assessment system.e.g.,numerous and repetitive indicators,non-uniform units,and poor comparability,and reflected the urban ecological security state more objectively,being able to provide scientific basis for urban ecological environment management and decision-making.
Keywords:pressure-state-response model  emergy analysis  urban ecological security
本文献已被 万方数据 等数据库收录!
点击此处可从《应用生态学报》浏览原始摘要信息
点击此处可从《应用生态学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号