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A Study on Rice Growth and Yield Monitoring Using Medium Resolution Landsat Imagery  

Kim, Min-Ho (National Institute of Crop Science, RDA)
Lee, Chung-Kuen (Samsung Fire & Marine Insurance)
Park, Ho-Ki (Samsung Fire & Marine Insurance)
Lee, Jae-Eun (Samsung Fire & Marine Insurance)
Koo, Bon-Cheol (Samsung Fire & Marine Insurance)
Shin, Jin-Chul (Samsung Fire & Marine Insurance)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.53, no.4, 2008 , pp. 388-393 More about this Journal
Abstract
Earth observation satellite imagery having medium-resolution can provide the useful information very rapidly and cheaply. The objective of this study was to assess the feasibility for monitoring rice growth and yield using medium resolution satellite imagery at Seosan AB reclaimed area, Chung-nam province. Using the LANDSAT imagery at booting stage ($29^{th}$ July 2004), $NDVI_R$ had the most significant linear relationships with rice yield of Seosan AB reclaimed area with the correlation coefficient (r) as 0.68. Therefore, this relationship was established as rice yield equation as function of $NDVI_R$, where excluding the 10 small area having low number of pixel, the determination coefficient ($R^2$) of the linear regression between NDVIred and milled rice yield was improved to 0.66. In addition, raster masking method, which was easier and faster even if a little unaccurate than preexisting method, was established for extracting information paddy field zone. Adaptability of rice yield equation function of $NDVI_R$ on year and region was investigated using rice yield and $NDVI_R$ values, which were extracted with raster masking method, from 7 counties or cities, Kyeong-ki province in 2005. Relationship between observed and calculated rice yield showed 1:1 line indicating that the adaptability was admitted.
Keywords
rice; satellite; LANDSAT; growth; yield; monitoring;
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