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

Shobha Poudel, Rajib Shaw

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number13
JournalClimate
Volume4
Issue number1
DOIs
Publication statusPublished - 2016 Mar 1
Externally publishedYes

Fingerprint

crop yield
climate
crop
climate change
millet
temperature
trend analysis
summer
regression analysis
wheat
maize
food
winter

Keywords

  • Climate change
  • Crop yield variability
  • Impacts
  • Mountainous region
  • Nepal

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

The relationships between climate variability and crop yield in a mountainous environment : A case study in Lamjung District, Nepal. / Poudel, Shobha; Shaw, Rajib.

In: Climate, Vol. 4, No. 1, 13, 01.03.2016.

Research output: Contribution to journalArticle

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