1. NDVI image of Thailand

2. PHYSIOGRAPHY OF THAILAND

3. STUDY AREA
STUDY AREA
BANGKOK

5. (Normalized Difference Vegetation Index)
NDVI
(Normalized Difference Vegetation Index)
= S(Infrared) - S(Red)
S(Infrared) + S(Red)
= S(Band 4) - S(Band 3)
S(Band 4) + S(Band 3)
S = reflectance value of band

7. Young rice
----Low NDVI
More mature rice
----High NDVI

9. Rice 4 groups in 1998 dry season

10. Rice 4 groups in 1999 dry season

11. NDVI and rice age on Landsat TM 20 March 1999

12. Water use of rice from sampling wells

13. NDVI & Water use

14. Base Map => Monitoring & Planning
Present result = NDVI & Water use
(Map)
Next step => NDVI & Water level change
=> Ground water storage change
Base Map => Monitoring & Planning