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Evaluating the surface temperature and vegetation index (Ts/VI) method for estimating surface soil moisture in heterogeneous regions
Liu, Zhaofei; Yao, Zhijun; Wang, Rui
2018-06-01
Source PublicationHYDROLOGY RESEARCH
ISSN0029-1277
Volume49Issue:3Pages:689-699
Corresponding AuthorYao, Zhijun(yaozj@igsnrr.ac.cn)
AbstractThe surface temperature and vegetation index (Ts/VI) method is a remote sensing-based quantitative approach. It is widely used for estimating the evapotranspiration, evaporative fraction, and surface soil moisture (SSM). However, this method can only be used in flat regions. In this study, we investigated the effect of altitude when using the Ts/VI method for estimating the SSM in heterogeneous regions. The results showed that the temperature vegetation dryness index (TVDI) method performed poorly at estimating the SSM in the source region of the Yangtze River; there was a weak correlation with the observed SSM, and R-2 was only 0.167. However, the performance of the method improved considerably when the effects of both altitude and frozen soil were considered; the TVDI had a strong correlation with the observed SSM, and R-2 improved to 0.617. In the study area, the effects of altitude on the TVDI values were greater than those of the frozen soil. In general, the Ts/VI method can obtain satisfactory results in mountainous regions if the effects of both the altitude and frozen soil are considered.
KeywordMODIS Qinghai-Tibetan Plateau remote sensing retrieval surface soil moisture surface temperature temperature vegetation dryness index
DOI10.2166/nh.2017.079
WOS KeywordTRIANGLE METHOD ; SPACE ; EVAPOTRANSPIRATION ; RETRIEVAL ; ALGORITHM ; DROUGHT
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41571027] ; National Natural Science Foundation of China[41371058] ; National Natural Science Foundation of China[41190080]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000452409900007
PublisherIWA PUBLISHING
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51370
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYao, Zhijun
AffiliationChinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhaofei,Yao, Zhijun,Wang, Rui. Evaluating the surface temperature and vegetation index (Ts/VI) method for estimating surface soil moisture in heterogeneous regions[J]. HYDROLOGY RESEARCH,2018,49(3):689-699.
APA Liu, Zhaofei,Yao, Zhijun,&Wang, Rui.(2018).Evaluating the surface temperature and vegetation index (Ts/VI) method for estimating surface soil moisture in heterogeneous regions.HYDROLOGY RESEARCH,49(3),689-699.
MLA Liu, Zhaofei,et al."Evaluating the surface temperature and vegetation index (Ts/VI) method for estimating surface soil moisture in heterogeneous regions".HYDROLOGY RESEARCH 49.3(2018):689-699.
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