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ID 31425
本文ファイル
著者
Joshi, Niraj Prakash
Maharjan, Keshav Lall 大学院国際協力研究科 広大研究者総覧
Piya, Luni 大学院国際協力研究科
キーワード
Climate variables
temperature
rainfall
food-crops
Nepal
NDC
地球科学・地学・地質学
抄録(英)
Climate change influences crop yield vis-à-vis crop production to a greater extent in countries like Nepal where agriculture depends largely on natural circumstances. Plausible scenarios of climate change like higher temperatures and changes in precipitation will directly affect crop yields. Therefore, this study assesses the effect of observed climate variables on yield of major food-crops in Nepal, namely rice, wheat, maize, millet, barley and potato based on regression model for historical (1978-2008) climatic data and yield data for the food-crops. The yield growth rate of all the foodcrops is positive. However, the growth rate for all crops, except potato and wheat, is below population growth rate during the period. Climate variables like temperature and precipitation are the important determinants of crop yields. Trend of precipitation is neither increasing nor decreasing significantly during this period. However, temperature is increasing by 0.7 °C during the period. Climate variables show some influences on the yield of these major food-crops in Nepal. Increase in summer rain and maximum temperature has contributed positively to rice yield. Also, increase in summer rain and minimum temperature has positive impact on potato yield. However, increase in summer rain and maximum temperature adversely affected the yield of maize and millet. Increase in wheat and barley yield is contributed by current trend of winter rain and temperature. Consideration of spatial variation in similar type of study in Nepal that will be helpful in identifying the region more vulnerable to climate change in terms of crop yield is highly recommended.
掲載誌名
広島大学現代インド研究 : 空間と社会
1号
開始ページ
19
終了ページ
26
出版年月日
2011-03-22
出版者
広島大学現代インド研究センター
ISSN
2185-8721
SelfDOI
言語
英語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
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publisher
権利情報
Copyright (c) 2011 広島大学現代インド研究センター
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部局名
現代インド研究センター
国際協力研究科
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