rainfall density

Rainfall makes the soil density and disperse coefficient increased and porosity decreased.

降雨能使火烧迹地的土壤密度和分散系数升高、孔隙度下降。

It needs to compile the rainstorm density formula in single recurrence interval, when inquiring into the rainstorm density formula of the urban rainwater drainage system by the rainfall data recoded by self-recording rain gauge.

利用自计雨量计记录的降雨资料，推求城市雨水排水系统暴雨强度公式时，需要编制单一重现期暴雨强度公式。

By the contrast analysis, we find that rainfall and tree layer crown density are the main factors which had impaction on the canopy interception, throughfall and stemflow. ( 4) The maximum interception capability of the forests.

通过对比分析，得出：降雨量和乔木层郁闭度是影响森林林冠截留、穿透雨和树干流大小的主要因子。（4）森林的最大截留量分析。

Natural factors include climate, vegetation, edaphic factors, terrain, geological and hydrological factors. However, the main factors include rainfall, the degree of vegetation coverage, the soil texture, the terrain gradient and the ditch density geological lithology.

其中自然因素包括气候因素、植被因素、土壤因素、地形地貌因素、地质因素及水文因素，但起主导作用的是降水、植被覆盖度、土壤质地、地质岩性、地形坡度和沟谷密度等；