| 基于RS与GIS的黄土丘陵沟壑区土地覆盖动态研究 |
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| 引用本文： | 常庆瑞,刘京,杨勤科,张晓萍.基于RS与GIS的黄土丘陵沟壑区土地覆盖动态研究[J].应用生态学报,2003,14(12):2187-2190. |
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| 作者姓名： | 常庆瑞 刘京 杨勤科 张晓萍 |
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| 作者单位： | [1]西北农林科技大学资源环境学院,杨凌712100 [2]中国科学院水土保持研究所,杨凌712100 |
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| 基金项目： | 国家自然科学基金项目 (3 0 170 790 )，教育部科技重点项目(0 3 15 7)，国家“863”计划资助项目(863 3 0 8) |
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| 摘 要： | 应用遥感与GIS相结合的方法，对陕北黄土高原地区的数字影像进行人-机交互的屏幕解译，得到1990年、2000年的土地利用／覆盖数字地图，以及面积统计结果，分析表明，近10年来该地区建筑和工交用地逐年扩大，耕地面积保持稳定，果园面积显著增加，人工林地和森林覆盖率有较大幅度提高，荒野地占地比重下降，区域生态环境质量得到明显改善。
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| 关 键 词： | 森林资源 空间特征 二类调查 三峡库区 遥感分析 |
| 文章编号： | 1001-9332(2003)12-2187-04 |
| 修稿时间： | 2001年4月12日 |
Dynamic monitoring on land cover in loess hilly and gully area by the methods of RS and GIS |
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| CHANG Qingrui ,LIU Jing ,YANG Qinke ,ZHANG Xiaoping.Dynamic monitoring on land cover in loess hilly and gully area by the methods of RS and GIS[J].Chinese Journal of Applied Ecology,2003,14(12):2187-2190. |
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| Authors: | CHANG Qingrui LIU Jing YANG Qinke ZHANG Xiaoping |
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| Institution: | Northwest Sci-Tech University of Agricultural and Forestry, Yangling 712100, China. Changqr@public.xa.sn.cn |
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| Abstract: | By the integration of RS and GIS,with the TM data obtained from Landsat 5 in 1990 and the ETMplus data from Landsat 7 in 2000,and after geometrical rectifying and amplifying and man machine screen decoding data image,the map of eco environment and land use/cover in Yanhe watershed and its vicinities in 1990 and 2000 was obtained respectively,and the results of statistic analyses showed that in comparing with 1990,the artificial land in 2000 increased by 31%,the area of agricultural land was stable and that of orchard was 2.82 times more,and the area of artificial forest increased remarkably and that of shrub was 6 times more. The coverage rate increased to 13.88%,and the area of wilderness was 44.8% of that in 1990.The quality of eco environment was improved remarkably in this area. |
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| Keywords: | Land use/cover Dynamic monitoring Loess hilly and gully area RS & GIS |
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