Based on experiment of biological coloration and the theory of pipe mode, the model of water transpiration for Larix olgensis was studied by using the growth ring as basic unit.

• 根据管道模型理论,以年轮为基本研究单位,利用生物染色剂染色试验对长白落叶松的水分输导模式进行研究发现:长白落叶松不同年轮的水分纵向输导能力差异很大;