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http://dx.doi.org/10.5762/KAIS.2013.14.11.5417

An Approach for Improvement of Goodness of Fit on the Estimation of Paddy Rice Yield Using Satellite(MODIS) Images  

Kim, Bae-Sung (Dept. of Industrial and Applied Economics in JeJu National University, Research Institute for Subtropical Agriculture and Animal Biotechnology)
Kim, Jae-Hwan (World Institute of Kimchi)
Ko, Seong-Bo (Dept. of Industrial and Applied Economics in JeJu National University, Research Institute for Subtropical Agriculture and Animal Biotechnology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.11, 2013 , pp. 5417-5422 More about this Journal
Abstract
This research was performed in order to improve the goodness of fit of paddy rice production forecasting using MODIS images and to find out appropriate explanatory variables in the forecasting model. The aim of this paper is to review the use of satellite images for the survey of paddy rice production in Korea. Many developed countries, including the United States, Australia, and Japan, have been using satellite images to produce agricultural statistics such as crop production, cultivated acreage, etc. The survey accuracy of crop production by using satellite images, however, is not satisfied in practical use. In this paper, we reviewed several methods to increase the survey accuracy of rice production statistics, gained from satellite images. Rice was selected for this study because its cultivated area and production amount could be more easily identified than other crops by using satellite images. The MODIS images were used because they involved more appropriate images to estimate and analyze rice production. This study estimated yield functions by using the NDVIs, gained from paddy rice yields and annual average isothermal lines, and the meteorological variables such as sunshine hours, rainfall, and temperature during ripening stage. As a result of yield function estimation, the goodness of fit(R-squared) for the models was shown from 0.768 to 0.891. In this study, it is noteworthy academically and practically that vegetation index(NDVIs) identified by annual average isothermal lines and meteorological variables are very useful for estimating yield functions.
Keywords
Satellite Images; Rice Yield; Isothermal line; NDVI; MODIS; Meteorological variables;
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Times Cited By KSCI : 3  (Citation Analysis)
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