模型构造的方法是以Logistic方程描述生长量 ,假设采伐量为常量且等于生长量时 ,推导出折迭突变模型 .此模型有助于管理层制定管理决策 ,防止森林消亡 .该文又通过曲线采伐模型及Logistic生长模型推导出尖角突变模型 ,这个模型给出了采伐将导致突变发生的敏感区域 ,而且通过模型的滞后性使人们清楚地意识到森林一旦遭受破坏 ,再想恢复需入更大的力量 The method of model construction is to describe the amount of growth by means of Logistic equation. When the amount of harvest is constant and equal to the amount of growth, the catastrophe mutation model is deduced. This model helps the management to make management decisions and prevent the forest from extinction. Cutting model and Logistic growth model, a sharp-pointed mutation model is derived. This model gives the sensitive region where logging will lead to mutation. And through the model’s lag, people are clearly aware that once the forest is destroyed, Great power