An empirical study on development of regional circular economy based on eco-efficiency: a case study of Jiangsu Province
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摘要: 基于生态效率理论,对江苏省2005—2014年生态效率及其变化轨迹进行实证研究,并引入脱钩分析法探究江苏省经济发展状况与环境压力的关系,最后使用灰色关联分析法对影响江苏省生态效率变化的主要资源与环境分效率因子作出诊断。结果表明:2005—2014年,江苏省各指标的资源效率均在波动,环境效率多数有小幅上升;综合资源效率与综合环境效率皆有波动,且综合环境效率波动幅度大于综合资源效率;从生态效率及循环经济模式的时间演变轨迹看,江苏省走的是跳跃型发展模式;经济发展与环境压力的脱钩状态不稳定,主要表现为强脱钩、弱脱钩和扩张性复钩3种状态;通过灰色关联分析可知,固体废物综合利用、工业用电、全社会用电、生活能源消费、城镇生活污水排放和一般工业固体废物产生为影响江苏省生态效率变化的显著贡献因子。Abstract: Based on the theory of eco-efficiency, the empirical research on eco-efficiency and its change path of Jiangsu Province from 2005 to 2014 was conducted, and the relationship between the economic development and environmental pressure explored by using the decoupling analysis method. Finally, the gray relational method was used to diagnose the main factors of resource and environmental efficiency which affected the change of eco-efficiency in Jiangsu Province. It was found that from 2005 to 2014, the resource efficiency of all the indexes in Jiangsu Province fluctuated, and most of the environmental efficiency increased slightly. The integrated resource efficiency and environmental efficiency fluctuated, and the environmental efficiency fluctuated more than the integrated resource efficiency. In terms of the eco-efficiency and circular economy model, Jiangsu Province took a leap-based economic development model, and the decoupling status of economic development and environmental pressure was unstable, mainly including three kinds of state, i.e. the strong decoupling, weak decoupling and expansionary recoupling. The gray relational analysis showed that the comprehensive utilization of solid wastes, industrial electricity, living electricity, living energy, domestic sewage and solid waste were the significant contributors to the change of eco-efficiency.
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Key words:
- eco-efficiency /
- region /
- circular economy /
- measure /
- Jiangsu Province
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