Journal
EUROPEAN JOURNAL OF REMOTE SENSING
Volume 49, Issue -, Pages 39-56Publisher
ASSOC ITALIANA TELERILEVAMENTO
DOI: 10.5721/EuJRS20164903
Keywords
Rice monitoring; data fusion; double logistic; Vietnam
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Funding
- Taiwan Ministry of Science and Technology [NSC-102-2923-E-008-001-MY3]
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Information on rice cropping activities and growing areas is critical for crop management. This study developed a logistic-based method to monitor rice sowing and harvesting activities and, accordingly, to map rice growing areas from the MODIS-Landsat fusion data in An Giang Province, Vietnam. The EVI2 data derived from the fusion data compared with that of Landsat data indicated a close correlation (R2 = 0.93). The comparisons between the estimated sowing and harvesting dates and the field survey data revealed the RMSE values of around 8 and 5 days for the winter-spring crop and 9 and 12 days for the summer-autumn crop, respectively. The rice mapping results compared with the ground reference data indicated an overall accuracy and Kappa coefficient of 93.2% and 0.86 for the winter-spring crop, and 91.7% and 0.83 for the summer-autumn crop, respectively. These results were reaffirmed by the government's rice areas statistics, with the relative error in area values smaller than 3.3%.
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