人工林生长与收获预测模型的基本方法

通过建立林分生长和收获预估模型可以对森林资源数据进行连续预估和动态更新,这对当地林业部门指导生产、实行科学管理具有重要意义.该文参研了以往建立林分生长和收获模型的方法,提出建立林分生长和收获预测模型的一般方法:根据森林生长理论,利用影响林分生长的主要因子(林龄、地位指数和林分密度),把地位指数和林分密度函数引入相关生长模型,并经过合理的模型参数解算、残差分析及误差计算检验,选择最优模型分别建立人工林林分静态和动态生长和收获预估模型.

Basic methods for establishing plantation stand growth estimate models.

Forest resources information can be estimated continuously and renewed dynamically by establishing stand growth and harvesting estimate model,which is significant to realize scientific management for local forestry departments.The authors studied previous methods of establishing stand growth and harvesting model and put forward the basic methods: 1) first,introducing the stand site index and stand density function into the growth model according to theories of forest growth and the factors affecting the stand growth such as stand age,site index and stand density;2) then selecting the optimum model and establishing the static and dynamic plantation growth and harvesting model after calculating the model parameter.