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Profit and loss analysis on ecological value in upper reaches of Tarim River under land use changes

GONG Lu1,2,3;Lv Guanghui1,2,3;DING Jianli1;LIU Xinchun4;PAN Xiaoling1,2,3   

  1. 1College of Resources and Environment Science,Xinjiang University,Urumqi 830046, China; 2Xinjiang Key Laboratory of Oasis Ecology,Xinjiang University,Urumqi 830046, China; 3International Center for Desert AffairsResearch for Sustainable Development in Semi-Arid and Arid Land,Xinjiang University,Urumqi 830046, China; 4Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002， China

  • Received:2005-07-24 Revised:2005-12-10 Online:2006-05-10 Published:2006-05-10

Abstract: Based on the TM images of 1990 and 2000,this paper analyzed the land use changes in Akesu-Awati oasis at the upper reaches of Tarim River,and,with the equivalent weight factors of ecosystem services,estimated the ecological value under these changes.The results showed that the land use changes in test area were notable,with the rapid increase of cropland,residential site and saline land,and the decrease of grassland,forest land,water area and wetland to different degree.During 1990-2000,the ecological value became negative,and decreased by 1.055×109 Yuan.There was a great loss of the economic value of ecosystem services,which meant that only through sustainable development,could we achieve the best development of society and economy in the research area.

Key words: Southern margin of Taklamakan Desert, Oases ecosystem, Sustainable management, Optimal model