Soil infiltration characteristic and its influencing factors were studied under five land-cover types in gully drainage areas in Yuanmou dry-hot valley region in this paper.Results indicated that:(1)Differences on soil infiltration capacity among the five land-cover types were significant,especially for the bare land A and bare land B,whose infiltration capacities were much more lower than those of the other three types,which probably is one of the reasons that the corresponding gully heads were still activ...