| 半干旱区土壤湿度遥感监测方法研究 |
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| 引用本文： | 李新辉,宋小宁,周霞.半干旱区土壤湿度遥感监测方法研究[J].地理与地理信息科学,2010,26(1). |
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| 作者姓名： | 李新辉 宋小宁 周霞 |
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| 作者单位： | 1. 中国科学院研究生院资源与环境学院,北京,100049
2. 广东省环境科学与技术公共实验室,广东,广州,510650 |
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| 基金项目： | 中国科学院百人计划择优支持项目“人地系统相互作用机理与空间过程研究”;;广东省环境科学与技术公共实验室开放基金“基于遥感与GIS旱情监测”(080201) |
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| 摘 要： | 针对西北半干旱地区缺水问题,探讨了一种适合半干旱地区简便、易行的土壤湿度提取方法。该研究借鉴植被供水指数法(VSWI)和温度植被干旱指数法(TVDI)的研究思想,同时考虑到半干旱地区植被覆盖度较低,采用改进型土壤调整植被指数(MSAVI)代替NDVI,以降低土壤背景对植被指数的影响,从而对两种方法进行修正。利用改进前后的指数提取土壤湿度,对比分析表明,用修正后的指数研究该区的土壤湿度效果更好。
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| 关 键 词： | 土壤湿度 植被供水指数 温度植被干旱指数 地表温度 |
Study on Methods of Monitoring Soil Moisture by Remote Sensing in Semi-arid Areas |
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| LI Xin-hui,SONG Xiao-ning,ZHOU Xia.Study on Methods of Monitoring Soil Moisture by Remote Sensing in Semi-arid Areas[J].Geography and Geo-Information Science,2010,26(1). |
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| Authors: | LI Xin-hui SONG Xiao-ning ZHOU Xia |
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| Institution: | 1.College of Resources and Environment;Graduate University of Chinese Academy of Sciences;Beijing 100049;2.Guangdong Public Laboratory of Environmental Science Technology;Guangzhou 510650;China |
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| Abstract: | Soil water always plays an important role in material cycle and energy exchange in the interface between land and atmosphere.It is very important to achieve large-scale,rapid estimation of soil moisture in the semi-arid area in the north-west China.In this paper,an improved method to monitor soil moisture by remote sensing is proposed.Through comprehensive analysis of existing approaches in the aspect of datum requirement,procedures,time spending,etc,the proposed method is based on research ideas of Vegetat... |
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| Keywords: | soil moisture Vegetation Supply Water Index Temperature/Vegetation Dryness Index land surface temperature |
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