摘要
城市代谢效率测度是城市可持续发展研究的重要方向。该文运用数据包络分析(DEA)和主成分分析法考察了2010年中国31个案例城市的代谢效率特征。研究结果显示,中国城市代谢系统效率的地域分异性显著,尤其是西部城市代谢系统的非DEA有效比例较高。这些非DEA有效城市在非可再生资源要素(钢材、原煤、焦炭等)投入、社会经济产出(人均GDP、城市化率等)、非期望产出(固体废弃物、废水和废气)方面有较大改善空间。
The research on urban metabolic efficiency is important to urban sustainable development.In this paper,metabolic efficiencies of 31 Chinese cities in 2010 are investigated by the Principal Component Analysis and Data Envelopment Analysis （DEA）.The results show that Chinese urban metabolic efficiencies vary with different geographical characteristics and the western cities have more non-DEA metabolic efficiencies.These non-DEA efficient cities need to improve slacks in the non-renewable resource inputs,economic outputs and undesirable outputs.Finally,the suggestions on sustainable development of urban metabolic systems are also proposed.
出处
《地理与地理信息科学》
CSCD
北大核心
2014年第3期62-65,共4页
Geography and Geo-Information Science
基金
国家自然科学基金项目(40971100
41101119)
关键词
城市代谢效率
主成分分析
DEA
中国城市
urban metabolism
Principal Component Analysis
Data Envelopment Analysis （DEA）
Chinese cities
