Estimation of Main Crop Yield Functions Using Weather Conditions
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- SUGIMOTO Kenji
- Graduate School of Environmental Studies, Nagoya University
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- MATSUMURA Kan-ichiro
- School of Policy Studies, Kwanseigakuin University
Bibliographic Information
- Other Title
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- 気象条件による主要穀物収量関数の推定
- キショウ ジョウケン ニ ヨル シュヨウ コクモツ シュウリョウ カンスウ ノ スイテイ
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Abstract
The purpose of this article is to estimate the yield function of main crops (maize, rice and wheat) using statistics and spatial data of daily weather conditions such as temperature and precipitation, crop, distributions, and crop calendar from 1961 to 2006. By using the estimated parameters of yield function, precipitation rise of 1% increases the production of maize by 0.15%, rice by 0.07%, and decreases the production of wheat by -0.32%, and a temperature rise of 1% decreases the production of maize by 3.78%, rice by 5.70%, and wheat by 1.36% assuming present crop areas, and cropping dates are unchanged. From this result, it can be concluded that a temperature rise induced by global climate change will lead to a reduction in production of major crops, especially rice.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 69 (5), I_27-I_32, 2013
Japan Society of Civil Engineers
