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《Journal of Beijing Normal University(Natural Science)》 2003-02
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PRELIMINARY STUDY OF LAND USE AND LAND COVER CHANGE IN HIGH FRIGID REGION:TIBET AUTONOMOUS REGION LAZI COUNTY AS AN EXAMPLE

Zhao Yanzhi Cheng Hong Wang Guiyong Zou Xueyong (China Center of Desert Research; Key Laboratory of Environmental Change and Natural Disaster, the Ministry of Education of China; Institute of Resources Science: Beijing Normal University, 100875, Beijing, China)  
Based on the interpretation of the Landset TM data in 2000, land use status quo map in Tibet Lazi County was conducted. In addition, the author compared the map made by CAS Remote Sensing Department in 1986, analyzed the land use and land cover change of the whole county during the 14 years. The result showed that both farmland and grassland were main land use styles, which accounted for 76.5% of all. Land cover change took place mostly from grassland to other land use styles, of which more than 90% transformed into sand land and uncovered land. In the same period, the environment had few changes, and the increase of the temperature and rainfall even were beneficial to the land cover. Therefore, it was believed that the unreasonable land use, especially the destruction of the human was the main reason of the changes. And our conclusion was consistent to the result of correlative analysis.
【Fund】: 西藏自治区计委雅江中部流域生态环境建设规划资助项目
【CateGory Index】: X171.1
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