气候变化领域集成服务门户(CCPortal): Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar

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DOI	10.2166/wcc.2014.114
	Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar
	Shrestha S.; Thin N.M.M.; Deb P.
发表日期	2014
ISSN	20402244
起始页码	427
结束页码	442
卷号	5 期号:3
英文摘要	This study analyzes the impacts of climate change on irrigation water requirement (IWR) and yield for rainfed rice and irrigated paddy, respectively, at Ngamoeyeik Irrigation Project in Myanmar. Climate projections from two General Circulation Models, namely ECHAM5 and HadCM3 were derived for the 2020s, 2050s, and 2080s. The climate variables were downscaled to basin level by using the Statistical DownScaling Model. The AquaCrop model was used to simulate the yield and IWR under future climate. The analysis shows a decreasing trend in maximum temperature for three scenarios and three time windows considered; however, an increasing trend is observed for minimum temperature for all cases. The analysis on precipitation also suggests that rainfall in wet season is expected to vary largely from -29 to +21.9% relative to the baseline period. A higher variation is observed for the rainfall in dry season ranging from -42% for 2080s, and +96% in the case of 2020s. A decreasing trend of IWR is observed for irrigated paddy under the three scenarios indicating that small irrigation schemes are suitable to meet the requirements. An increasing trend in the yield of rainfed paddy was estimated under climate change demonstrating increased food security in the region. © IWA Publishing 2014.
英文关键词	Climate change; Crop modeling; Irrigation water requirements; Myanmar; Rainfed paddy yield
语种	英语
scopus关键词	Climate change impact; Crop model; Irrigation projects; Irrigation water requirements; Myanmars; Paddy yields; Rice yield; Climate change; climate change; climate effect; climate modeling; crop yield; general circulation model; irrigation; paddy field; rainfed agriculture; water budget; Myanmar
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148263
作者单位	Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, P. O. Box 4 Klong Luang, Pathumthani, 12120, Thailand
推荐引用方式 GB/T 7714	Shrestha S.,Thin N.M.M.,Deb P.. Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar[J],2014,5(3).
APA	Shrestha S.,Thin N.M.M.,&Deb P..(2014).Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar.Journal of Water and Climate Change,5(3).
MLA	Shrestha S.,et al."Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar".Journal of Water and Climate Change 5.3(2014).