日本落叶松林分材种出材量预测模型和出材量表的研究

引用影响林分材种收获量的主要因子胸径、林龄、立地指数为参数,采用多因子综合描述的方法,建立了日本落叶松林分材种出材量预测模型H＝α1D^a2A^a3si^a4,V=α1D^a2H^a3。并在此基础上研制了同一立地等级、不同龄阶下各径阶材种出材量表,该表可为及时准确地掌握林分的材种结构及变化、进行林分材种结构调整、落实限客伐森林面积提供重要依据。

Study on prediction model of stand outturn and table of outturn for Japanese larch

Acting principle factors which affect the outturn of sand including sand age and site index as parameter, prediction model H=a1D a2A a3si a4,V=a1D a2H a3 on stand outturn of Japanese larch was established by using multi-factor comprehensive descrip. Basing the prediction model, the outturn table of Japanese larch was worked out under the same site grade, different age gradation and stem gradation. The table can provide the important basis for grasping accurate assortment structure and change of stand in timetions, adjusting assortment structure of stand and fixing forest area of cutting limit.