森林类型对森林火灾自组织临界性的影响

在真实的森林系统中，由于外界因素的复杂性，森林火灾的自组织临界性要受到影响。森林类型便是影响森林火灾自组织临界性的一个重要因素。本文研究了以密度为控制参数的森林火灾模型以及这个模型在森林密度不同时产生的相变行为，发现对过于稀疏或者过于密集的森林类型，森林火灾的分布会偏离甚至完全背离幂律关系，从而使得自组织临界性不再满足。

Influences of the Forest Type on the Self-organized Criticality of Forest Fires

The self organized criticality (SOC) of actual forest fire is influenced by complex external conditions. The forest type is one of the most important factors that influence SOC. In this paper, the density controlled forest fire model, as well as the phase transition phenomena with forest density are studied. It is shown that the distributions of forest fires of both sparse forest and over dense forest do not satisfy power law relations, indicating that these two types of forest do not have SOC.