中文摘要：

为探明土地利用方式与土壤容重双因子对土壤水分入渗性能及变化过程的影响,通过室内土柱一维垂直入渗试验,比较分析不同土地利用方式的土壤在不同容重下土壤水分入渗率、累积入渗量和湿润锋等的动态变化。结果表明：土地利用方式与容重对土壤入渗过程具有一定的交互影响。表征土壤入渗能力的稳定入渗率、累积入渗量和湿润锋深度在同一土地利用方式下均随容重增大递减,呈显著的负相关关系;相同容重条件下,不同土地利用方式下的稳定入渗率、累积入渗量和湿润锋深度有一定的差异性,当土壤容重增大到一定程度时,容重对土壤入渗的影响占主导作用。此外,4种土地利用方式下土壤的入渗过程均可用Kostiakov公式和Philip公式进行高精度的拟合。

英文摘要：

In order to determine the effects of land use patterns and soil bulk density on infiltration process,the dynamic changes of infiltration rates,cumulative infiltration,and wetting front of soil water under different soil bulk density of soils in different land use patterns were explored by one-dimensional vertical infiltration experiment.The results showed that soil infiltration processes were greatly affected by land use patterns and soil bulk density.Infiltration capacity indicated that infiltration rate,accumulative infiltration and wetting front depth of the four experimental soils in different land use patterns decreased along with increasing soil bulk density.The indexes of infiltration capacity had significantly negative correlation with soil bulk density.Under the same soil bulk density,infiltration rate,accumulative infiltration and wetting front depth were affected by land use patterns.Soil bulk density played a dominant role on infiltration process when it was big enough.Moreover,the four experimental soils could be described well by Kostiakov formula and Philip equation.