Eco-efficiency of grassland-based animal husbandry and its determinants in the source regions of the Yangtze and Yellow Rivers
ZHU Fu-biao1,2, FANG Yi-ping1,2, YI Shu-hua3, YU Hu4
1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Taking the source regions of the Yangtze and Yellow Rivers as case and using both super-efficiency DEA and Malmquist DEA models, spatiotemporal changes in the eco-efficiency of grassland-based animal husbandry and its determinants were analysed. The results showed that there was a significant spatial difference in the eco-efficiency. In 2013, Yushu City, Chengduo County and Nangqian County experienced relatively high the super-efficiency, while Dari County, Maduo County and Tanggulashan Town were relatively low the super-efficiency. Based on the changes in space and time, the eco-efficiency was divided into three sequential stages:a steadily rising stage during the period 1994~2002, a differentiating stage during the period 2003~2006, and a rapidly rising stage during the period 2007~2013. It was further demonstrated that the eco-efficiency depended heavily on the technological progress and scale efficiency. And capital, precipitation and labor force were the determinants of the eco-efficiency. Therefore, increasing investment in science and technology; improving the technological and management level and labor quality; constructing water conservancy facilities, pastureland and livestock shelter; strengthening the protection of grassland ecosystem and frozen soil, will be most effective in the long term when they are complemented by appropriate public policies.
朱付彪, 方一平, 宜树华, 虞虎. 江河源区高寒草地畜牧业生态效率及影响因素[J]. 中国环境科学, 2017, 37(1): 310-318.
ZHU Fu-biao, FANG Yi-ping, YI Shu-hua, YU Hu. Eco-efficiency of grassland-based animal husbandry and its determinants in the source regions of the Yangtze and Yellow Rivers. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(1): 310-318.
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