林窗模型研究进展

林窗模型是一类以气候因子(温度和降水)为主要驱动变量对森林动态进行模拟预测的方法, 因其参数易于获得和估计, 结构灵活而开放, 便于研究者根据需要进行适当的修改, 因而得到了迅速的发展, 在世界各地的许多森林类型中得到广泛应用。阐述了林窗模型假设及其发展变化, 系统总结了林窗模型树木生长方程以及影响树木生长的环境因子, 分析了林窗模型对树木死亡过程和更新过程的模拟方法, 指出目前林窗模型研究中存在的问题以及未来的发展方向。

Review on Forest Gap Models

Forest gap model,driven by monthly mean temperature and precipitation,is an important tool for evaluating the potential dynamics of forest tree species composition and size structure at the local scale.A great variety of forest gap models have been used all over the world due to its parameters and flexible structure,which can facilitate researchers' modification.In this paper,four assumptions originally underlie gap models and their evolutive processes were described.The equations for maximum growth rate and effects of environmental factors on growth were summarized.The simulation methods of tree mortality and regeneration in gap model were analyzed.At last,the existing problems and challenges in future were proposed.