| 河西走廊张掖绿洲土地利用/土地覆盖变化特征 |
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| 引用本文： | 蒙吉军,吴秀芹,李正国.河西走廊张掖绿洲土地利用/土地覆盖变化特征[J].地理学报(英文版),2003,13(1):71-75. |
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| 作者姓名： | 蒙吉军 吴秀芹 李正国 |
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| 作者单位： | DepartmentofUrbanandEnvironmentalScience,PekingUniversity,LaboratoryofAnalysisandSimulationofEarthSurfaceProcesses,theMinistryofEducation,Beiji |
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| 基金项目： | National Natural Science Foundation of China for Young Scholars, No. 40101002,No. 40201001 |
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| 摘 要： | Taking two false color composite Landsat 5 TM(Thematic Mapper)images of band 4,3,2taken in 1995 and 2000 as data resources,this paper carried out study on LUCC of Zhanye oasis in recent five years by interpretation according to land resources classification system of 1∶00,000 Resources and Environmental Database of the Chinese Academy of sciences.The results show that great changes have taken place in landuse/landcover in Zhangye oasis since 1995:(1)Changes of landuse structure show that cropland and land for urban construction and built-up area increased,on the contrary,water area and grassland decreased.These changes reflect the deterionration of arrangement of water and land resources between the upper and lower reaches of the Heihe River.(2)Regional differences of landuse/landcover are evident,characterized by following aspects:in Sunan County located in Qilian Mountain area,unused land and grassland decreased,but cropland and land for urban construction and built-up area inreased.In Minle and Shandan counties located in foothills,unused land,warer area and cropland decreased,but grassland and land for urban construction and built-up area increased.In Zhangye City,Linze County and Gaotai County located in plain area of the middle reaches of the Heihe River,unused land,warer area and grassland decreased,while woodland,cropland and land for urban construction and buile-up area increased.
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| 关 键 词： | 土地利用／土地覆盖变化 LUCC 张掖地区 河西走廊 绿洲 土地资源 分类 |
| 收稿时间： | 5/8/2002 12:00:00 AM |
| 修稿时间： | 20 October 2002 |
Landuse/landcover changes in Zhangye oasis of Hexi Corridor |
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| MENG Jijun,WU Xiuqin,LI Zhengguo.Landuse/landcover changes in Zhangye oasis of Hexi Corridor[J].Journal of Geographical Sciences,2003,13(1):71-75. |
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| Authors: | MENG Jijun WU Xiuqin LI Zhengguo |
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| Institution: | Department of Urban and Environmental Science, Peking University, Laboratory of Analysis and Simulation of Earth Surface Processes, the Ministry of Education, Beijing 100871, China |
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| Abstract: | Taking two f alse color composite Landsat 5 TM (Thematic Mapper) images of band 4,3,2 taken in 1995 and 2000 as data resources, this paper carried out study on LUCC of Zhan gye oasis in recent five years by interpretation according to land reso urces classification system of 1:100,000 Resources and Environmental Data base of the Chinese Academy of Sciences. The results show that great changes have taken place in landuse/landcover in Zhangye oasis since 1 995: (1) Changes of landuse structure show that cropland and land for urban c onstruction and built-up area increased, on the contrary, water area an d grassland decreased. These changes reflect the deterioration of eco-e nvironment and the acceleration of urbanization, and also indicate the problems existing in the arrangement of water and land resources betw een the upper and lower reaches of the Heihe River. (2) Regional diff erences of landuse/landcover are evident, characterized by following asp ects: in Sunan County located in Qilian Mountain area, unused land an d grassland decreased, but cropland and land for urban construction an d built-up area increased. In Minle and Shandan counties located in f oothills, unused land, water area and cropland decreased, but grassland and land for urban construction and built-up area increased. In Zhan gye City, Linze County and Gaotai County located in plain area of th e middle reaches of the Heihe River, unused land, water area and gra ssland decreased, while woodland, cropland and land for urban construction and built-up area increased. |
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| Keywords: | landuse/landcover changes (LUCC) Zhangye oasi s Hexi Corridor |
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