---

作 者 ：桑卫国, 李景文, 陆兆华

期 刊 ：植物生态学报 1998年 22卷 5期 页码：441-447

关键词：山杨；密度效应；林窗模型；林分动态；

Keywords:Populus davidiana, Density effects, Gap model, Stand dynamics,

摘 要 ：本文用林窗模型研究了小兴安岭南坡山杨林林分密度动态过程，在给定林分初始条件后，模拟了林分密度、断面积、生物量、叶面积指数和生产力150年的变化。用林分密度效应的3/2法则和产量恒定法则检验模拟林分，结果表明模拟林分密度发展与理论预测相符合。通过本文的研究既检验了林窗动态模型又印证了林分密度效应理论。

Abstract:Dynamics of Populus davidiana forest in Lesser Xingan Mountain, Northeast China, was studied by means of forest dynamics "gap model". After the initial stand conditions were given, changes of stand factors including number of trees, base area, biomass, leaf area index and production during 150 years were simulated. The rule of –3/2 power and law of constant yield of stand density effects were applied to test simulated stand density. The results show that change of the simulated density was consistent with that of theoretical density. This not only tested the forest dynamics model but also verified the theory of stand density effect.

---