摘要
通过对海河流域内平原及山丘区三级子流域的多年平均降水量、径流深及实际蒸发量和蒸发能力的分析,发现Budyko假设在海河流域山区参数ω的平均值远小于平原区,山丘区计算蒸散发量和径流量的误差较小,而平原区误差大。在此基础上,建立了海河流域平原区地下水埋深变化与Budyko公式计算误差之间关系,改进了平原区Budyko计算公式,提高了实际蒸散发和径流量计算精度。
Based on the analysis of average annual precipitation,runoff depth,measured evaporation and evaporative capacity of 3-level subbasins in both plain and mountainous areas of Haihe river basin,parameter ω of Budyko Assumption in mountainous area is found much smaller than that in plain areas,and the error of evaporation and runoff in mountainous areas is small while the error in plain area in plain areas is large.The relationship between the groundwater level variation in Haihe river and calculation error of Budyko formula is established based on the analysis,in order to improve the Budyko formula for plain areas,and enhance the calculation accuracy of measure evaportranspiration and runoff.
出处
《中国农村水利水电》
北大核心
2014年第6期107-111,共5页
China Rural Water and Hydropower
基金
国家自然科技基金重大
重点及面上项目(40930635
51079038
51190091)
