摘要
以五道沟地区实测土壤含水率与气象要素为基础,分别从年、月和季节尺度上分析了土壤含水率在时间与垂向分布上的变化特征,选择不同的典型年和降水场次,探讨了土壤水分在不同降水强度下的响应规律,并运用Hydrus-1D模型模拟了土壤水的运动。结果表明,土壤水分受到降水和蒸发的共同作用,降水强度影响土壤水分的持续下渗时间与下渗深度,浅层土壤的响应程度更大。各层土壤模拟效率系数均超过0.6,表明Hydrus-1D模型在五道沟地区具有较强的适用性,可用于该地区土壤水分运动的模拟研究。
Based on the measured soil moisture content and meteorological factors, this paper analyzed the temporal and vertical variation characteristics of soil water content in Wudaogou regions from yearly, monthly and seasonal scales. Different typical years and precipitation periods were selected to investigate the response of soil moisture under different precipitation intensities, and the Hydrus-1D model was used to simulate the movement of soil water. The results show that the soil moisture is influenced by precipitation and evaporation. The intensity of precipitation affects continuous infiltration time and infiltration depth of soil water, and the response of the shallow soil is greater. The simulated efficiency coefficients of all layers are over 0.6, indicating that the Hydrus-1D model has good applicability in Wudaogou region and can be used for the simulation of soil water movement in this region.
作者
吴辰
郝振纯
鲁承阳
梁菊平
WU Chen1， HAO Zhen-chun1,2, LU Cheng-yang3 , LIANG Ju-ping1(1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering; 2 National Cooperative Innovation Center for Water Safety ＆ Hydro-Science, Hohai University, Nanjing 210098, China; 3. Ningmeng Bureau of Hydrology and Water Resources, YRCC, Baotou 014030, Chin)
出处
《水电能源科学》
北大核心
2018年第9期138-142,共5页
Water Resources and Power
基金
国家自然科学基金项目(41371047)
国家重点研发计划(2016YFC0402704)
水文水资源与水利工程科学国家重点实验室专项经费资助(1069-514031112)
