A method for canopy water content estimation for highly vegetated surfaces-shortwave infrared perpendicular water stress index

文献类型： 外文期刊

第一作者： Ghulam, Abduwasit

作者： Ghulam, Abduwasit;Li Zhao-Liang;Qin QiMing;Tong QingXi;Wang JiHua;Kasimu, Alimujiang;Zhu Lin

作者机构：

关键词： leaf water content; shortwave infrared perpendicular water stress index (SPSI); remote estimation of vegetation water content

期刊名称：SCIENCE IN CHINA SERIES D-EARTH SCIENCES （ 影响因子：1.588； 五年影响因子：1.42 ）

ISSN： 1006-9313

年卷期： 2007 年 50 卷 9 期

页码：

收录情况： SCI

摘要： In this paper, a new method for canopy water content (FMC) estimation for highly vegetated surfaces-shortwave infrared perpendicular water stress index (SPSI) is developed using NIR, SWIR wavelengths of Enhanced Thematic Mapper Plus (ETM+) on the basis of spectral features and distribution of surface targets with different water conditions in NIR-SWIR spectral space. The developed method is further explored with radiative transfer simulations using PROSPECT, Lillesaeter, SailH and 6S. It is evident from the results of validation derived from satellite synchronous field measurements that SPSI is highly correlated with FMC, coefficient of determination (R squared) and root mean square error are 0.79 and 26.41 %. The paper concludes that SPSI has a potential in vegetation water content estimation in terms of FMC.

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