The relationships between climate variability and crop yield in a mountainous environment: A case study in Lamjung District, Nepal

Shobha Poudel, Rajib Shaw

研究成果: Article査読

35 被引用数 (Scopus)

抄録

Several studies have concluded that mountainous countries such as Nepal are more vulnerable to climate change; thus, a changing climate should have a significant impact on crop yields. This work aims to explore the impact of climate change on major crop yields in the mountainous parts of Nepal and to determine their relationships based on a regression model between historical climatic data and yield data for food crops. The study starts with an analysis of the last 30 years of climatic data from Lamjung district. Mann-Kendall and Sen's Slope methods have been used for the trend analysis and quantification. The results showed an increase in temperature of approximately 0.02 °C to 0.07 °C per year in different seasons and a mixed trend in precipitation. Although there was no significant impact of the climate variables on the yields of all crops, the regression analysis revealed negative relationships between maize yield and summer precipitation and between wheat yield and winter minimum temperature, and a positive relationship between millet yield and summer maximum temperature.

本文言語English
論文番号13
ジャーナルClimate
4
1
DOI
出版ステータスPublished - 2016 3月 1
外部発表はい

ASJC Scopus subject areas

  • 大気科学

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