NDVI image of Thailand.

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Presentation transcript:

NDVI image of Thailand

PHYSIOGRAPHY OF THAILAND

STUDY AREA STUDY AREA BANGKOK

(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

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

Rice 4 groups in 1998 dry season

Rice 4 groups in 1999 dry season

NDVI and rice age on Landsat TM 20 March 1999

Water use of rice from sampling wells

NDVI & Water use

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

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