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| STUDY OF TIME-SPACE EVOLUTION AND CONTROL OF VULNERABILITY OF LAKE BASIN SOCIAL ECOLOGICAL SYSTEM: A CASE OF THE DIANCHI LAKE |
| YU Zhong-yuan1, LI Bo2, ZHANG Xin-shi2 |
1. Department of Geography & Tourism, Hainan Normal University, Haikou 571158, China;
2. College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China |
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Abstract This article, taking the Dianchi lake as an example, combining the "Pressure-State-Response" model and "Exposure-Sensitivity-Resilience" model, from the point of view of social ecological system, build social ecosystem vulnerability analysis framework, exploring the space-time evolution of the vulnerability of the Dianchi lake watershed, revealing the driving mechanism of vulnerability. The author holds that:1) The Dianchi lake basin is the origins and centor of the Kunming city in term of vulnerability development, whose vulnerable area is expanding, vulnerable degree increasing; 2) The watershed keep staying in the high-risk stage of vulnerability, easy to change the steady state of the system; 3) Sensitivity and responsibility to disaster is weakening in the whole system during the peroid from 1990 to 2010a; 4) Special geological and geographical environment, limited environmental capacity make the congenital basement for the vulnunerbilty; 5) Excessive concentration of function role serving the region, leading to intensified human activity, complex pollution sources, destruced the naturial landscape, deteriorated and made damage to the human-enviroment relations; 6) Unreasonable land use made the landscape pattern destroyed, ecological conection between parts of the system interrupted, ecological service function of the system weak or even lost totally; 7) Weak environmental consciousness of the users in the watershed, low management efficiency of the authority add to the vulnurbility of the system; 8) Low-end industrial structure, low-efficiency production hinder the cultivation of the responsibility of the system.
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Received: 20 March 2014
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2015, Vol. 30 
