For the soil infiltration , generally , the order of the original and stable infiltration speed from big to small is the inner , the outer space and the paludal trace , as well as layer a b . in the view of the rainfall balance of the wildwood , the canopy interception is averagely 61 . 10 % of the rainfall , the trunk runoff 0 . 80 % , the inner 38 . 10 % , the surface and the litter evapotranspiration 18 . 00 % , the surface runoff does n ' t appear in the forest , and the interflow is also very small , which is 0 . 30 % of the total rainfall ; the conflux is 21 . 10 % 原始森林的水量平衡中，林冠截留量平均占降雨的58 . 27 ，树干径流量占降雨的0 . 80 ，林内降雨占降雨的40 . 93 ，地表蒸发及地被物蒸散量占总降雨的20 . 13 ，林内很少发生地表径流，壤中流量也极少，只占总降雨的0 . 07 ；汇流量占总降雨的21 . 43 。
