１９８０～１９９１年对广西亚热带主要林型的树干茎流进行定位观测，结果表明：广西亚热带主要林型的年树干茎流量为６．２～６６．７ｍｍ，分别占林外降雨量０．５～３．３％；不同林型的年树干茎流率显示阔叶林或针阔叶混交林（占１．７～３．３％）大于针叶林（占０．５～１．４％）。树干茎流的大小主要受树皮的吸水性能、树木胸径、树干枝角与冠型结构、降雨量及降雨强度的影响。杉木林树干茎流营养元素的年平均浓度为８．７０７～１４．８４８ｐｐｍ，是林外雨年平均浓度（２．４５３～３．７５３ｐｐｍ）的３．０～６．０倍；是林内穿透雨年平均浓度（５．８６１～１０．４５４ｐｐｍ）的１．４～２．０倍。说明树干茎流具有重要的水文生态功能。

The stationary observation of the stemflow of main forest types in Guangxi Subtropics was conducted from 1980 to 1991. The results indicate: The annual stemflow is 6.2 ～ 66.7 mm , and is 0.5 -3.3 % of the precipitation. in which 1.7～3.3 % for the broad-leaf forest or the coniferours broad- leaved mixed forest is more than 0. 5 ～1. 4 % for the coniferous forest. The stemflow is influenced by the water absorbing property of barks, the diameter in breast high of trees, the branch angles, the crown structure, the precipitation and the intensity of precipitation. Annual average concentration of the nutrient elements of stemflow in Cunninghamin lanceolata forest is 8.707%～14.848 ppm. It is 3. 0～6. 0 times as much as this of the precipitation and is 1. 4 ～2. 0 times as much as this of throughfall, showing that the stemflow has important hydrological ecological function.