Wang Yi-Chen, Wang Yuan, Zhu Xiao-Dong, Wu Xiao-Qing, Wang Ke, Ren Ke-Xiu, Lu Gen-Fa
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, China.
Ying Yong Sheng Tai Xue Bao. 2011 Feb;22(2):460-6.
This paper first applied material flow analysis (MFA) to construct three levels of regional eco-efficiency indicators, i.e., regional direct eco-efficiency (RDE), regional total eco-efficiency (RTE), and holistic eco-efficiency (HE), and adopted the newly developed data envelopment analysis (DEA) to evaluate the eco-efficiency of Tongling City during the period of 1990-2008. We also applied Malmquist productivity index (MPI) to explore the eco-efficiency change between two following years and its driving factors. The main results were summarized as 1) though the RDE of Tongling City in 1990-2008 kept an increasing trend, its mean eco-efficiency was not high (close to 0.8 in 80% of the years), being lower than that of the RTE and HE, and 2) the RDE change was closely relevant to the improvement in resource management and the technical input in environmental protection in recent years. In order to further improve the RDE of the City, it would be necessary to raise its eco-efficiency via expanding raw material input, reducing domestic extraction, promoting resources productivity, and taking more measures on environmental protection facilities construction.
本文首次应用物质流分析（MFA）构建了区域生态效率指标的三个层次，即区域直接生态效率（RDE）、区域总生态效率（RTE）和整体生态效率（HE），并采用新开发的数据包络分析（DEA）对铜陵市1990 - 2008年期间的生态效率进行评估。我们还应用曼奎斯特生产率指数（MPI）来探究相邻两年间生态效率的变化及其驱动因素。主要结果总结如下：1）铜陵市1990 - 2008年的RDE呈上升趋势，但其平均生态效率不高（80%的年份接近0.8），低于RTE和HE；2）近年来RDE的变化与资源管理的改善和环境保护的技术投入密切相关。为进一步提高该市的RDE，有必要通过扩大原材料投入、减少国内开采、提高资源生产率以及在环保设施建设方面采取更多措施来提升其生态效率。
