MONITORING VEGETATION WATER CONTENT BY USING OPTICAL VEGETATION INDEX AND MICROWAVE VEGETATION INDEX FIELD EXPERIMENTS AND APPLICATIONS.ppt

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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 )

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Motivation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

VWC, MVI, NDVI, NDWI ,[object Object],[object Object],[object Object]

Field Experiment --Instruments and setting ,[object Object],[object Object]

Experiment design ,[object Object],[object Object],[object Object],Winter wheat development VWC was measured by sampling

Vegetation ,[object Object],11-29 12-08 12-13 12-20

Observed Results VWC ~ NDVI NDVI shows a poor correlation to the VWC, with an R-square less than 0.2. It is not good to estimate VWC from NDVI observation!

Observed Results VWC ~ NDWI NDWI has a good correlation to VWC, while band 5 has bigger R value VWC information maybe can be estimated by NDWI 5, for vwc in [0,4]

Observed Results VWC ~ MWI VWC = linear regression function of MVI High R for X-C band

Application Domain ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Application: VWC retrieved from JAXA algorithm Vs. in situ ,[object Object],[object Object]

Results: VWC from MVI-based method A3 H7 MVI(10,6) MVI (18,10) High R for X-C band

Remark ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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MONITORING VEGETATION WATER CONTENT BY USING OPTICAL VEGETATION INDEX AND MICROWAVE VEGETATION INDEX FIELD EXPERIMENTS AND APPLICATIONS.ppt

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 )

7. Experiment design 1 2 3

10. Observed Results VWC ~ NDVI NDVI shows a poor correlation to the VWC, with an R-square less than 0.2. It is not good to estimate VWC from NDVI observation!

11. Observed Results VWC ~ NDWI NDWI has a good correlation to VWC, while band 5 has bigger R value VWC information maybe can be estimated by NDWI 5, for vwc in [0,4]

12. Observed Results VWC ~ MWI VWC = linear regression function of MVI High R for X-C band

13.

14.

15. Results: VWC from MVI-based method A3 H7 MVI(10,6) MVI (18,10) High R for X-C band

16.

17. Thank you for your attention!

Notas do Editor

E Emergence 0 29-Nov-06 DR Floral initiation (double ridge) 35 3-Jan-07 TS Terminal spikelet 60 28-Jan-07 First node 80 17-Feb-07 HD Heading 120 29-Mar-07 A Anthesis 130 8-Apr-07 PM Physiological maturity 170 18-May-07

MONITORING VEGETATION WATER CONTENT BY USING OPTICAL VEGETATION INDEX AND MICROWAVE VEGETATION INDEX FIELD EXPERIMENTS AND APPLICATIONS.ppt

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