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| 基于RS和GIS的西藏察雅县土壤侵蚀动态监测与分析 | |
| 引用本文： | 裴厦,姚治君,章予舒,张博.基于RS和GIS的西藏察雅县土壤侵蚀动态监测与分析[J].自然资源学报,2011,26(2):302-309. |
| 作者姓名： | 裴厦 姚治君 章予舒 张博 |
| 作者单位： | 1. 中国科学院 地理科学与资源研究所,北京 100101; 2. 中国科学院 研究生院,北京 100049; 3. 西藏农牧学院 资源与环境学院,西藏 林芝 860000 |
| 基金项目： | 国家科技支撑计划课题“藏东横断山区水土流失现状及防治技术”(2007BAC06B06) |
| 摘 要： | 西藏土壤侵蚀类型多样,且以水力侵蚀和冻融侵蚀为主,其动态监测属于难点问题。研究基于水力侵蚀和冻融侵蚀各自的基本特点,综合运用TM影像、土地利用图、地形图(DEM)和植被覆盖度图,构建了基于RS和GIS的藏东横断山区土壤侵蚀分类分级动态监测方法,并借助ENVI和ArcGIS软件,分析了察雅县1995年到2000年的土壤侵蚀动态变化情况。结果表明:察雅县土壤侵蚀以微度、轻度和中度侵蚀为主,其中冻融侵蚀主要分布在西部的高山峡谷区,所占比重为2.06%;在人类的土地开发活动和温度、降水变化等自然因素的综合作用下,察雅县土壤侵蚀加剧,东部大面积的轻度侵蚀区转化为中度侵蚀区。 |
| 关 键 词： | 土壤侵蚀 RS和GIS 藏东横断山区 |
| 收稿时间： | 2010-03-05 |
| 修稿时间： | 2010-10-09 |
Dynamic Monitoring and Analysis of Soil Erosion in Chaya County of Tibet |
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| PEI Sha,YAO Zhi-jun,ZHANG Yu-shu,ZHANG Bo.Dynamic Monitoring and Analysis of Soil Erosion in Chaya County of Tibet[J].Journal of Natural Resources,2011,26(2):302-309. | |
| Authors: | PEI Sha YAO Zhi-jun ZHANG Yu-shu ZHANG Bo |
| Affiliation: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3. College of Resources and Environment, Tibet Agriculture and Animal Husbandry College, Linzhi 860000, China |
| Abstract: | Soil erosion in Tibet mainly includes water erosionand freeze-thaw erosion,the dynamics of which are difficult to monitor.In the study,the method of RS and GIS was applied to analyze the dynamic change of the soil erosion type and level in Chaya County based on respective characteristic of water erosion and freeze-thaw erosion in order to get an effective and quick soil erosion monitoring method in Hengduan Mountain Region in East Tibet.The software of ENVI(Environment for Visualizing Images) and ArcGIS wer... |
| Keywords: | soil erosion RS and GIS Hengduan Mountain Region in East Tibet |
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