地理科学 ›› 2019, Vol. 39 ›› Issue (7): 1111-1118.doi: 10.13249/j.cnki.sgs.2019.07.009

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中国城市生态效率时空演变及影响因素的区域差异

杨勇1,2,邓祥征2   

  1. 1. 河南财经政法大学资源与环境学院, 河南 郑州 450046
    2. 中国科学院地理科学与资源研究所, 北京 100101
  • 收稿日期:2018-09-04 修回日期:2018-11-23 出版日期:2019-07-10 发布日期:2019-07-10
  • 作者简介:杨勇(1982-),男, 湖南衡南人,博士后,副教授,主要研究方向为城乡国土资源评价与GIS研究。E-mail: yayo2004@163.com
  • 基金资助:
    国家自然科学基金项目资助(71533004)

The Spatio-temporal Evolutionary Characteristics and Regional Differences in Affecting Factors Analysis of China’s Urban Eco-efficiency

Yang Yong1,2,Deng Xiangzheng2   

  1. 1. College of Resources and Environment Science, Henan University of Economics and Law, Zhengzhou 450046, Henan, China
    2. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2018-09-04 Revised:2018-11-23 Online:2019-07-10 Published:2019-07-10
  • Supported by:
    National Natural Science Foundation of China(71533004)

摘要:

采用随机前沿生产函数(SFA)对中国城市2006~2013年的生态效率进行测算研究,随后采用Kernel密度函数对中国城市生态效率的演变特征进行分析。结果表明: 2006~2013年,中国城市生态效率均值介于0.807 6~0.838 2,资源投入和社会投入对生态效率具有正向作用,环境投入中的工业二氧化硫排放、废气排放和固废排放对生态效率具有显著的负向作用; 中国城市生态效率是一个波动起伏的动态变化过程,各等级城市生态效率均值都呈现增长趋势,其中超大城市的生态效率均值提升最快,城市生态效率规模等级递增效应逐渐显现,各等级城市生态效率趋同变化; 影响因素对各等级城市生态效率的作用存在明显差异,有必要采取针对性的措施提升各等级城市生态效率。

关键词: 生态效率, 随机前沿函数, 演变特征, 影响因素, 中国城市

Abstract:

Improving urban eco-efficiency is the key to realize the construction of ecologically-civilized city, which also improve harmonious development of regional society, economy and ecology. In this article, we assessed the urban eco-efficiency with Stochastic Frontier Analysis (SFA) in China (not including data of Tibet, Hong Kong, Macao and Taiwan) during 2006-2013, then analyzed the spatio-temporal evolutionary characteristics of urban eco-efficiency by using Kernel density function, dynamic comparative of urban eco-efficiency of different scales in different economic zones also analyzed. Finally, the Tobit regression model was established, we discussed the impact of affecting factors on urban eco-efficiency based on different scales. The main results are as follows: 1) The mean value of urban eco-efficiency in China ranges from 0.807 6 and 0.838 2 during 2006-2013, high value areas present spatial agglomeration trend, the environment input factors such as sulphur dioxide emission, green house gas emission and solid wastes have negative effects; 2) China’s urban efficiency has a fluctuated dynamic change process, the mean eco-efficiency of various scales cities shows increasing tendency, the eco-efficiency of megacities improved fastest among various scales cities, urban eco-efficiency increasing returns to scale shows obvious, urban eco-efficiency becoming universal; 3) The effect of affecting factors on the urban eco-efficiency shows obviously scale difference, the large-scale cities have better economic foundations, industrial structure optimized continuously, an effective resource element allocation mechanism was formed gradually, therefore, there are few significant factors affecting ecological efficiency, however, the eco-efficiency of small-scale cities is more easily affected by various kinds of factors, therefore, it is necessary to take corresponding measures to improve the eco-efficiency of various scales cities.

Key words: eco-efficiency, Stochastic Frontier Analysis, evolutionary characteristics, affecting factors, cities of China

中图分类号: 

  • F205