IGARSS 2011, Jul. 27, Vancouver 1 Monitoring Vegetation Water Content by Using Optical Vegetation Index and Microwave Vegetation Index: Field Experiment and Application Hui Lu ( Tsinghua University, China) Toshio Koike & Hiroyuki Tsutsui (The University of Tokyo) Hedeyuki Fujii (JAXA)
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IGARSS 2011, Jul. 27, Vancouver 1 Monitoring Vegetation Water Content by Using Optical Vegetation Index and Microwave Vegetation Index: Field Experiment.
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IGARSS 2011, Jul. 27, Vancouver 1
Monitoring Vegetation Water Content by Using Optical Vegetation Index and Microwave
Vegetation Index: Field Experiment and Application
Hui Lu ( Tsinghua University, China)Toshio Koike & Hiroyuki Tsutsui (The University of Tokyo)
Hedeyuki Fujii (JAXA)
IGARSS 2011, Jul. 27, Vancouver 2
Outline
• Background and motivation• Microwave vegetation index• Field Experiment
– Setting and instruments– Observed Results
• Application – Mongolia site
• Remark
IGARSS 2011, Jul. 27, Vancouver 3
Background• Global vegetation information is closely related to
Remark• Field experiment which observing winter wheat development by
using microwave radiometer and VIS/IF spectroradiometer simultaneously.
• Comparing to in situ observed VWC– NDVI show poor correlation– NDWI show good correlation– MVI show strong correlation
• MVI-based linear equation could provide VWC information, but the absolute values should be scaled– Can be used to monitor the vegetation temporal variation– The coefficient of linear equation should be related to (vfc, vegetation type)
• Future work: – Quantify the coefficient by each vegetation type (LSM classification, or real
type)– Test for more observation sites (US site, MDB site, China)