水利水电科技进展2012，Vol.32Issue(1)：13-17,5.DOI:10.3880/j.issn.1006-7647.2012.01.003
黄河下游大型引黄灌区蒸散发长期变化特性
Long-term variability of evapotranspiration in a large irrigated area in lower reach of Yellow River
摘要
Abstract
The process of water balance in Weishan Irrigation District during the period from 1984 to 2006, a large irrigation district in the lower reach of Yellow River, is simulated by means of the ecohydrological model. The long-term variability of its evapotranspiration (ET) is analyzed. The results show that the annual mean ET is 596 mm and accounts for 82% of the total amount of precipitation and irrigation. The mean annual ETT of wheat and maize during their growing periods is 284 and 314 mm, respectively, and accounts for 99% and 71% of the total amount of precipitation and irrigation, respectively. The inter-annual variability of the precipitation is dramatic. However, the inter-annual variability of ET is small and has no significant temporal trend owing to the influence of the irrigation. The inter-annual variation of ET of the crops during their main growing periods mainly relates to the potential evaporation. The seasonal variation of their ET is mainly controlled by the potential evaporation and the growth of the crops.关键词
蒸散发/夏玉米/冬小麦/生态水文模型/位山灌区Key words
evapotranspiration/ summer maize/ winter wheat/ ecohydrological model/ Weishan Irrigation District分类
天文与地球科学引用本文复制引用
雷慧闽,蔡建峰,杨大文,王凤娇..黄河下游大型引黄灌区蒸散发长期变化特性[J].水利水电科技进展,2012,32(1):13-17,5.基金项目
教育部博士学科点基金(20070003075) （20070003075）
国家自然科学基金(50811140089) （50811140089）
