RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2015, Vol. 24 >> Issue (05): 868-875.doi: 10.11870/cjlyzyyhj201505021

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ANALYSIS OF ECOLOGICAL CARRYING CAPACITY AND ITS SYSTEM COUPLING EFFECT IN DIANCHI LAKE BASIN

LIU Bao-qiang1, XIONG Li-ran1,2, JIANG Mei-ying1,3, ZHANG Lei1   

  1. 1. College of Tourism and Geography Science, Yunnan Normal University, Kunming 650500, China;
    2. College of International Studies, Yunnan Normal University, Kunming 650500, China;
    3. Research Center for Studies of Southwest China and Borderland Security, Yunnan Normal University, Kunming 650500, China
  • Received:2014-04-14 Revised:2014-05-23 Online:2015-05-20
  • Contact: 熊理然 E-mail:xiongliran001@163.com

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Abstract: Ecological carrying capacity (EC) is a hot topic that has drawn much attention of domestic and foreign scholars to analyze the regional sustainable development from the perspective of interaction between ecological subsystem, resources and environment subsystem and socio-economic subsystem. We calculated the ecological carrying capacity of 2001-2010 by analyzing the remote sensing image data with ENVI4.8 and Arcgis9.3. We combined relevant socio-economic data and selected 18 indicators according to the actual situation of the Dianchi Lake Basin. We used correlation analysis and regression analysis to analyze the ecological carrying capacity of the Dianchi Lake Basin and its coupling relationship with ecological subsystem, resources and environment subsystem and socio-economic subsystem elements. The results showed that: (1) The total EC and per capital EC of the Dianchi Lake Basin declined rapidly by 37.3% from 2001 to 2010. The cultivated land EC declined remarkably by 52.61%, but the construction land EC went up constantly by 27.08%. (2) Ecological carrying capacity of the Dianchi Lake Basin and the three subsystem elements showed a significant correlation, and the coupling form between them presented different shapes, including "J" shape, "L" shape, "U" shape and inverted "S" shape. (3) The analysis of forming mechanism showed the advance of urbanization, rapid social and economic development caused a tremendous pressure on ecological systems, leading water carrying capacity beyond the affordability, and extensive style of economic growth in the basin has resulted in excessive consumption of resources and deterioration of the environment. The combination of these factors has significant influence on above-mentioned coupling form. The results showed that resources and environment subsystem was the foundation, ecological environment subsystem was the core and the purpose was the development of socio-economic subsystem in the socio-economic environment system of the Dianchi Lake Basin. Currently, the environmental pollution control has made great achievements. However the situation was still grim. Especially the water environmental problem is increasingly serious in the basin. To achieve sustainable economic and social development, the key point is to deal with the coordinate relations between ecosystem and economic development.

Key words: ecological carrying capacity, coupling, formation mechanism, Dianchi Lake Basin

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