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《Journal of Mountain Science》 2008-04
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Recent Land Cover Changes in Roige Region of Qinghai-Tibetan Plateau

WANG Shiying,ZHANG Hong,DU Juan(Faculty of Geography and Resources Research,Sichuan Normal University,Chengdu 610068,China)  
Land use/cover is a pivotal problem in the study of global changes and sustainable development.Roige locates at the northeast front of Tibet Plateau,sensitive to global changes,and recognized by its sandy desertification and wetland changes.Based on field work,concentrated on land cover changes in Roige and using Landsat 5 images in 1987,1996 and 2001,this paper provides Roige land cover categories and their distribution by Moran I index.The results indicates that land cover change obviously in study period while wetland has an extent of 31.86 km2,sandy land 7.83 km2,and great changes are prominent in growing up of sandy land,inhabitant land and waste land.Moran I is 0.05 in each period and it shows land cover categories distribute stochastically.Because precipitation quantity increases inconspicuously,gradually growing of temperature becomes the major factor of land cover changes in Roige.This paper studies land cover changes in whole Roige,discusses sandy desertification and its countermeasures,and is positive to global change research and regional environmental protection.
【Fund】: 四川师范大学重点课题“川西北若尔盖湿地近期土地利用变化的水文效应研究”;; 四川省教育厅重点项目(2005A091)资助~~
【CateGory Index】: S159.2
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