太行山前平原降水在土壤中的非线性入渗过程  

Nonlinear Process of Precipitation Infiltration in the Soil of Taihang Piedmont

作　　者：何雨江[1] 蔺文静[1] 王贵玲[1] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,河北石家庄050061

出　　处：《水土保持学报》2013年第5期37-40,53,共5页Journal of Soil and Water Conservation

基　　金：国家"973计划"资助项目(2010CB428802);中国地质科学院科研业务专项(SK201211)

摘　　要：为更直观刻画多重因素影响下的厚包气带降水入渗过程,于2011-2012年在太行山前平原典型区利用TDR100开展多相原位加密监测实验。结果表明:大陆季风气候下的研究区70cm以上土壤受降雨蒸发因素影响显著,180cm深度以下土壤降水入渗滞后效应明显;湿润锋呈强相关性的对数曲线特征,相关系数为0.94;降水前后不同深度水力梯度变化高达406倍,降水30d后入渗至300cm深度,并趋于平衡。此强非线性水分转化过程,是外部降雨蒸发和内部渗透、含蓄能力共同作用的结果。In order to explore the complex process of precipitation infiltration,the soil moisture of deep vadose zone in Taihang piedmont was monitored in-situ last from 2011to 2012by TDR100.The result showed that the soil above 70cm in the continental moonsoon climate was influenced significantly by precipitation and evaporaspiration,the hysteresis effect occured obviously below 180cm depth.Wetting front was logarithmic curve of soil depth and correlation coefficient was 0.94.The hydraulic gradient changed as much as 406times after the precipitation.Moreover,the infiltration reached to 300cm depth after 30dof the precipitation and tended to balance.In addition,the nonlinear process was controlled by the precipitation and evaporaspiration of outer,and infiltrability and storage power of the soil inside.

关 键 词：太行山前平原 深厚包气带 土壤水势 非线性入渗 

分 类 号：P641.1[天文地球—地质矿产勘探] S152[天文地球—地质学]