干旱区生态环境知识资源中心(Arid): 半干旱区土壤湿度遥感监测方法研究

Arid

	半干旱区土壤湿度遥感监测方法研究
其他题名	Study on Methods of Monitoring Soil Moisture by Remote Sensing in Semi-arid Areas
	李新辉; 宋小宁; 周霞
来源期刊	地理与地理信息科学
ISSN	1672-0504
出版年	2010
卷号	26 期号:1 页码:90-
中文摘要	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.
英文摘要	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 Vegetation Supply Water Index (VSWI) and Temperature/Vegetation Dryness Index (TVDI) approach.They are convenient,since both of the indices are based on vegetation index and temperature.At the same time,because the degree of vegetation coverage is relatively low in semi-arid area,the Modified Soil Adjusted Vegetation Index (MSAVI) is adopted in computing these indexes instead of NDVI in order to eliminate the effects of soil on the vegetation index.Then this method is used to extract soil moisture information.Through comparative analysis of the results,it showed that the revised index is effective to inverse the soil moisture in this area.
中文关键词	土壤湿度 ; 植被供水指数 ; 温度植被干旱指数 ; 地表温度
英文关键词	soil moisture Vegetation Supply Water Index Temperature/Vegetation Dryness Index land surface temperature
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture ; Remote Sensing
CSCD记录号	CSCD:3803297
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224817
作者单位	李新辉, 中国科学院研究生院资源与环境学院, 北京 100049, 中国.; 宋小宁, 中国科学院研究生院资源与环境学院, 北京 100049, 中国.; 周霞, 广东省环境科学与技术公共实验室, 广东省环境科学与技术公共实验室, 广州, 广东 510650, 中国.
推荐引用方式 GB/T 7714	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],2010,26(1):90-.
APA	李新辉,宋小宁,&周霞.(2010).半干旱区土壤湿度遥感监测方法研究.地理与地理信息科学,26(1),90-.
MLA	李新辉,et al."半干旱区土壤湿度遥感监测方法研究".地理与地理信息科学 26.1(2010):90-.