Research Article
Impact of Climate Change on Rice-based Cropping Systems and Farmers’ Adaptation Strategies in Northeast Thailand

Anan Polthanee and Arunee Promkhambut

Asian Journal of Crop Science, 2014, 6(3), 262-272.

Abstract

Climate is the primary important factor for agricultural production. The objectives of this research were to studied the temperature and rainfall under past climate (1981-1996) and recent climate (1997-2012) in Northeast Thailand and examine the existing rice-based cropping systems under past climate on the trend of climate changes, as well as examine farmers’ coping with adaptation strategies to the related climate changes. The result showed that the areas where peanut grown after rice in post-rainy season with non-irrigation in Surin province, the mean maximum and minimum temperature increased about 0.53 and 0.84°C, respectively during the growing period under recent climate. This enhances potential evaporation and reduces the availability of soil moisture, thus causing peanut failure of production. Farmer’s coping adaptation strategies including changes in crop species, changes in land allocation and supplement irrigation. The areas where sesame and kenaf grown before rice in Buriram and Chaiyaphum province, respectively as pre-rice crop with initial growth using soil moisture by summer rain. Sesame and kenaf fail of production under recent climate, due to shifts in the monthly distribution of rainfall within the summer season one to two months. This caused delay planting and consequently interferes with normal rice planting. Farmers’ coping adaptation strategies including use of irrigation and changes land allocation. For overall climate changes in Northeast Thailand, the annual mean maximum temperature increased by 0.21°C, while mean minimum temperature increased by 0.51°C. The annual mean rainfall intensity increased by 67 mm with the number of rainy day in recent climate greater than the past climate about 2 days.

ASCI-ID: 4-153

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