NDLI: Monitoring vegetation water content by using optical vegetation index and microwave vegetation index: Field experiments and applications

Content Provider	IEEE Xplore Digital Library
Author	Hui Lu Koike, T. Tsutsui, H. Fujii, H.
Copyright Year	2011
Description	Author affiliation: The Department of Civil Engineering, The University of Tokyo, Japan (Koike, T.; Tsutsui, H.) \|\| Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba, Japan (Fujii, H.) \|\| The Center for Earth System Science of Tsinghua University and Ministry of Education Key Lab of Earth System Numerical Simulation, Beijing, China (Hui Lu)
Abstract	Information about vegetation status has widespread utility in agriculture, forestry, hydrology, and land-atmosphere interaction study. This paper presents an attempt to monitor the vegetation water content (VWC) by merging visible/infrared remote sensing and microwave remote sensing. We first derived a relationship between VWC and microwave vegetation index (MVI) through a field experiment. The relationships between VWC and Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) were also studied. We found that MVI has the largest correlation coefficient with VWC, while NDWI has the second largest one. The VWC-MVI relationship derived from field experiment was used to estimate VWC from AMSR-E data at Mongolia sites. The results were compared with AMSR-E standard VWC products. We found the new method overestimated VWC but highly correlated to the AMSR-E products. This study reveals the potential of MVI to monitoring VWC variation.
Starting Page	2468
Ending Page	2471
File Size	281225
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049711
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vegetation mapping Microwave theory and techniques Indexes Remote sensing Microwave radiometry Radiometers Temperature measurement field experiment Microwave remote sensing vegetation water content NDVI NDWI
Content Type	Text
Resource Type	Article

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