| 基于RS的黄河中游多沙粗沙区土地利用变化分析 |
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| 引用本文： | 梁伟,杨勤科.基于RS的黄河中游多沙粗沙区土地利用变化分析[J].水土保持研究,2006,13(5):90-92. |
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| 作者姓名： | 梁伟 杨勤科 |
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| 作者单位： | 西北农林科技大学,中国科学院水利部水土保持研究所,陕西,杨陵,712100 |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 据1975年的Landsat MSS、1986年和1997年的Landsat TM影像资料,运用遥感影像计算机自动分类方法获取土地利用信息,用GIS空间分析方法以及数理统计方法全面分析了黄河中游多沙粗沙区1975~1986年和1986~1997年两个时期内各土地利用类型的变化幅度、变化速度、数量变化的区域差异、变化方向以及变化方向的区域差异等。结果表明:后期土地利用类型间的相互转化有所增强;耕地、草地、林地和未利用地是本区土地利用变化的主导类型,耕地、草地与其它土地利用类型间的相互转化分布校广;后期耕地被居民地占用的面积和毁林开荒的面积比前期有所增加。
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| 关 键 词： | GIS 遥感 多沙粗沙区 土地利用变化 |
| 文章编号： | 1005-3409（2006）05-0090-03 |
| 收稿时间： | 2006-06-05 |
| 修稿时间： | 2006年6月5日 |
Land Use Change Analysis in Coarse Sandy Hilly Catchments of Yellow River Based on the Remote Sensing |
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| LIANG Wei,YANG Qin-ke.Land Use Change Analysis in Coarse Sandy Hilly Catchments of Yellow River Based on the Remote Sensing[J].Research of Soil and Water Conservation,2006,13(5):90-92. |
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| Authors: | LIANG Wei YANG Qin-ke |
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| Institution: | Northwestern Sci-tech University of Agriculture and Forestry, Institute of Soil and Water Conservation, CAS and Ministry of Water Resources , Yangling , Shaanxi 712100 ,China |
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| Abstract: | The land use information was extracted from the remotely sensed imagery of the year of 1975,1986 and 1997 automatically.Based on these thematic maps,the land use change range,speed,direction and regional diversity were analyzed by the combined means of GIS spatial analysis and statistics analysis.Results indicated: transition among the land use type was more intense in the later period than that of the former period.The main land use types were cropland,grassland,forest and waste land in this area and transition between cropland,grassland and other land use type was more extensive.The area of cropland which was inhabited by the residential area and the forest destroyed were larger in the later period than that of the former period. |
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| Keywords: | GIS remote sensing coarse sandy hilly catchments land use change |
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