IMPACTS OF CLIMATE CHANGE ON IRRIGATED AGRICULTURE IN THE CHALIYAR RIVER BASIN IN KERALA, INDIA

International Journal of Big Data Mining for Global Warming Pub Date : 2019-06-06 DOI:10.1142/S2630534819500013

Arya Soman, N. Chithra

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引用次数: 2

Abstract

Impact assessment of regional climate change is very important as change in climate has emerged as one of the major threats to water resource systems and would significantly affect streamflow, soil moisture and water availability. The study used output of the Regional Climate Model (RCM) Remo2009 (Max-Planck-Institute (MPI)) to analyze the potential impacts of climate change on irrigated agriculture in the Chaliyar river basin, India. Streamflow and evapotranspiration were simulated using validated Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) model. The estimation of irrigation water requirement (IWR) was performed using Food and Agriculture Organization (FAO) method for the period 2021–2030 and 2051–2060. Results show that projected streamflow increases during June to September and decreases during October to December and January to May in future. Crop water requirement and IWR showed an increase during dry season and decrease during wet season. The increase/decrease in streamflow and IWR during wet/dry season is more in the far future than near future and for RCP 8.5 scenario than RCP 4.5 scenario.

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气候变化对印度喀拉拉邦查里亚尔河流域灌溉农业的影响

区域气候变化的影响评价是非常重要的，因为气候变化已成为水资源系统的主要威胁之一，并将显著影响河流流量、土壤湿度和水分有效性。该研究利用区域气候模型(RCM) Remo2009 (Max-Planck-Institute (MPI))的输出分析了气候变化对印度查利亚尔河流域灌溉农业的潜在影响。利用经过验证的水文工程中心水文模拟系统(HEC-HMS)模型对河流流量和蒸散发进行了模拟。采用联合国粮农组织(FAO)方法估算了2021-2030年和2051-2060年灌溉需水量(IWR)。结果表明:6 ~ 9月预测流量增大，10 ~ 12月和1 ~ 5月预测流量减小;作物需水量和内水比表现为旱季增加，雨季减少。干湿季节流量和内水蓄积的增减在远未来大于近未来，在RCP 8.5情景下大于RCP 4.5情景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Big Data Mining for Global Warming

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