犁底层土壤入渗参数的空间变异性  

Spatial variability of the bottom of ploughed stratum

作　　者：郑丽萍[1] 徐海芳[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《地下水》2006年第5期55-56,102,共3页Ground water

基　　金：中国科学院知识创新工程重要方向性项目(KZCX3-SW-428)

摘　　要：通过野外布点试验,应用双环入渗仪测得了犁底层土壤各点的稳渗率fc和入渗经验指数α。试验结果分析表明,fc和α具有较大的空间变异性,并服从对数正态分布。根据fc和α在该田块内的等值线分布图,分析了入渗参数的空间分布特征。The steady water infiltration rate fc and infiltration experiential index a of the bottom of ploughed stratum are measured at about forty-eight points in the field by means of double ring method. It is shown that there is a large variability of parameters fc and a , and the two parameters both obey the log normal distribution. The spatial variability for fc and α are analysed based on their topography of measured data.

关 键 词：入渗参数 空间变异性 野外试验 合理取样数目 

分 类 号：TV213.4[水利工程—水文学及水资源]