DOI: 10.2166/wcc.2014.114
论文题名: Assessment of climate change impacts on irrigation water requirement and rice yield for Ngamoeyeik irrigation project in Myanmar
作者: Shrestha S. ; Thin N.M.M. ; Deb P.
刊名: Journal of Water and Climate Change
ISSN: 20402244
出版年: 2014
卷: 5, 期: 3 起始页码: 427
结束页码: 442
语种: 英语
英文关键词: Climate change
; Crop modeling
; Irrigation water requirements
; Myanmar
; Rainfed paddy yield
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67700
Appears in Collections: 气候减缓与适应
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作者单位: Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, P. O. Box 4 Klong Luang, Pathumthani, Thailand
Recommended Citation:
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]. Journal of Water and Climate Change,2014-01-01,5(3)