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基于能值和数据包络分析的城市复合生态系统生态效率评估

孙露1,2,耿涌1**,刘祚希1,2,薛冰1,2,刘哲1,2,刘竹1   

  1. 1中国科学院沈阳应用生态研究所, 中国科学院污染生态与环境工程重点实验室, 沈阳 110016; 2中国科学院大学, 北京 100049)
  • 出版日期:2014-02-10 发布日期:2014-02-10

Eco-efficiency evaluation of urban complex ecosystem based on emergy and data envelopment analyses.

SUN Lu1,2, GENG Yong1**, LIU Zuo-xi1,2, XUE Bing1,2, LIU Zhe1,2, LIU Zhu1   

  1. (1Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2University of Chinese Academy of Sciences, Beijing 100049, China)
  • Online:2014-02-10 Published:2014-02-10

摘要:

生态效率是定量分析生态系统中社会、环境、经济投入与产出关系的有效工具,对量化城市复合生态系统的可持续发展水平起着重要作用。本文综合能值分析和数据包络分析方法,构建新的能值评价指标和新的城市复合生态系统生态效率度量模型指标,并以沈阳为例,从城市能值流和生态效率角度分析城市系统资源、环境、经济的可持续发展情况。结果表明:2000—2010年,沈阳市生态效率呈现波动上升的变化,能值产出率呈波动下降后缓慢上升趋势;环境负载率上升趋势明显,城市发展面临的资源压力不断增大。沈阳市在今后的城市生态系统建设中,应着重优化能源利用结构,提高不可更新资源利用率,促进废弃物资源化利用,全面推动城市可持续发展。
 

关键词: 高光谱, 反演, 亚热带区域, 土壤氧化铁, 遥感

Abstract: Eco-efficiency is an effective tool to quantitatively analyze the input and output relation of social, environmental and economic perspectives of one ecosystem. It plays a key role to evaluate the sustainable development level of an urban ecosystem. By combining emergy analysis and data envelopment analysis (DEA) methods, this study proposes innovative emergy-based indicators and one new DEAbased model to measure the overall eco-efficiency of one urban ecosystem by employing a case study on Shenyang. Both emergy flows and eco-efficiency were calculated in order to assess the sustainable development levels from regional resources, environment, and economy perspectives. The results show that during the period of 2000 to 2010, the eco-efficiency of Shenyang had gradually increased. Emergy yield ratio first dropped a little bit, and then increased steadily. Environmental loading ratio rose significantly, showing an increasing resource pressure on Shenyang during its growth period. In order to improve its sustainable development, local governments should raise several appropriate policies, including optimizing energy-use structure, improving non-renewable resource use efficiency, and promoting waste recycling.

Key words: remote, hyperspectral, inversion, subtropical area., soil iron oxide