| 基于遥感技术和GIS的小流域土地利用/覆被变化分析 |
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| 引用本文： | 路云阁,许月卿,蔡运龙.基于遥感技术和GIS的小流域土地利用/覆被变化分析[J].地理科学进展,2005,24(1):79-86. |
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| 作者姓名： | 路云阁 许月卿 蔡运龙 |
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| 作者单位： | 北京大学环境学院资源与环境地理系,北京,100871;北京大学环境学院资源与环境地理系,北京,100871;北京大学环境学院资源与环境地理系,北京,100871 |
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| 基金项目： | 国家自然科学基金重点项目"西南喀斯特山区土地利用／土地覆被变化及其对土地资源利用可持续性的影响"(40335046) |
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| 摘 要： | 根据贵州省平坝县克酬流域1973年MSS影像数据,1989、1995、2000年Landsat TM影像数据,利用RS和GIS信息获取技术、空间分析技术和数理统计方法,分析了该流域土地利用的数量变化和空间变化特征,明确了土地利用变化的主要类型和方向,并探讨了土地利用变化和地形因子的关系。结果显示,该流域土地利用以农田和灌草用地为主,1973~2000年林地和灌草地减少,农田、水域、村镇、交通用地增加,林地转化为灌草、灌草转化为农田及农田转化为村镇居民点和公路用地是研究区主要土地利用变化类型。研究区土地利用空间分布与海拔高程、坡度等地形因子有密切关系。1973~2000年农田、林地和灌草分布的海拔高程和坡度均呈增加趋势,这和上述土地利用类型间的转化规律相一致。
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| 关 键 词： | RS 小流域 土地利用/覆被变化 贵州 |
| 收稿时间： | 2004-10-01 |
| 修稿时间： | 2004年10月1日 |
Analysis on Land Use/Land Cover Changes of Small Drain Basin Based on RS and GIS |
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| LU Yunge,XU Yueqing,CAI Yunlong.Analysis on Land Use/Land Cover Changes of Small Drain Basin Based on RS and GIS[J].Progress in Geography,2005,24(1):79-86. |
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| Authors: | LU Yunge XU Yueqing CAI Yunlong |
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| Institution: | Department of Resources, Environment and Geography, Peking University|Key Laboratory for Earth Surface Processes, the Ministry of Education, Beijing 100871 |
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| Abstract: | Based on remote sensing images, this paper discussed the land-use and land-cover change of Kechou watershed located in Pingba county, Guizhou Province from 1973 to 2000. The images include the MSS data in 1973 with the resolution of 57m, Landsat-TM data in 1989 with the resolution of 25m, and Landsat-TM data in 1995 and 2000 with the resolutions of 30m. Based on the spatial analysis techniques supported by Arc/Info software and other statistical methods, this paper analyzed the spatial-temporal change characteristics of land use in the small watershed, revealed the major patterns and trends of land use and land cover change, and discussed the relation between land use and topography factors. The results show that the major land covers in the watershed are cropland and grassland. During the period of 1973 to 2000, the forest and grassland decreased while the cropland, water area, residential area and road area increased. The conversions of forest to grassland, grassland to cropland and cropland to residential and road area are the major patterns of land use change. The spatial distributions of land use have close relation with the topography factors such as elevation and slope. The elevation and slope of cropland, forest and grassland increased during the period of 1973 to 2000, which are identical with the conversions of land use types. |
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| Keywords: | RS GIS small drainage basin land use/ land cover change Guizhou |
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