水资源保护Issue(3)：16-21,6.DOI:10.3880/j.issn.10046933.2015.03.004
黄河流域1961-2012年蒸散发时空变化特征及影响因素分析
Temporal and spatial characteristics of evapotranspiration in the Yellow River Basin during 1961-2012 and analysis of its influence factors
摘要
Abstract
On the basis of 1500 grids of 0.25°×0.25°, the VIC ( Variable Infiltration Capacity)-3L model was applied to calculate the hydrologic process in the Yellow River River Basin from1961 to2012 , getting daily actual evapotranspiration ( E) and potential evapotranspiration ( EP ) .Then the Mann-Kendall trend test method and the Budyko water-energy balance formula were applied in analyzing the variational trends of E, EP, Evapotranspiration ratio (E/P), dryness index (E/EP), and the influence of water and energy supply on evapotranspiration.The results show that E and EP have a tendency of decreasing on the whole, and EP shows a remarkable trend with spatially variety.The evapotranspiration ratio ( E/P) and dryness index ( E/EP ) do not show obvious change. Evapotranspiration in the upper reaches of the Yellow River Basin was mainly affected by the limitation of energy supply, while the one in the middle and lower reaches of the Yellow River Basin was affected by the limitation of water supply.关键词
水文过程/蒸散发/干燥指数/可变下渗能力模型/Budyko 水分能量平衡公式/Mann-Kendall趋势检验法/黄河流域Key words
hydrologic process/evapotranspiration/dryness index/VIC model/Budyko water-energy balance formula/Mann-Kendall trend test method/Yellow River Basin分类
天文与地球科学引用本文复制引用
童瑞,杨肖丽,任立良,刘懿,马明卫..黄河流域1961-2012年蒸散发时空变化特征及影响因素分析[J].水资源保护,2015,(3):16-21,6.基金项目
国家“十二五”科技支撑计划（2013BAC10B02）；国家自然科学基金 （）
