松纵坑切梢小蠹虫害的仿真模型与生态防治的优化策略

根据松纵坑切梢小蠹的主要生物学特征,通过分析抚育间伐持续控制松纵坑切梢小蠹虫害的机理,应用复杂适应系统(CA S)理论,建立了模拟松纵坑切梢小蠹虫害的一种动态演化数学模型,并讨论了模型的收敛性.然后选用昆明小哨林场为背景,进行了各种抚育间伐决策的仿真,从中优选抚育间伐决策.结果表明:模拟优化方案与实际调查统计分析结果一致:均为弱度间伐与中弱度间伐控制蠹害效果最好.最后通过森林积材量与虫害程度之间的优化,给出了抚育间伐的优化策略.

The Simulate Model and Optimum Tactic of Ecological Protection of Tomicus Piniperda

Bionomics of Tomicus piniperda was analyzed,the mathematical model of complex adaptive system of Tomicus piniperda is established by analysis sustainable control effect of Tomicus piniperda by different levels of intermediate cutting,and discusses the convergence of the model.The model selects the Pinus yunnanensis stands from Xiaoshao Forest Farm of Kunming to simulate sustainable control effect of Tomicus piniperda by different levels of intermediate cutting.The numerical results show that there is continuity with forest management survey.The effect of sustainable control for T.piniperda is the most significant with less and moderate less intensity of intermediate cutting.Last,we give the optimum tactic of intermediate cutting by analyzing the relationship between vermin and amount of growing stock.