【摘要】 利用 184个样地的 62 7组数据对 16种生长模型的参数进行了拟合 ,结合 I- 69杨的生物学特性和拟合效果 ,确定利用单分子曲线作为 I- 69杨的立地指数的导向曲线并编制了立地指数表。根据实际情况将立地指数划分为 3个地位级。更多还原

【Abstract】 Based on the investigation of 184 sample plots,16 models are used to analysis the relationship between stand dominant height and stand age,the results shows that the single cause model are available,a site index table are made based on the single cause model,and artificial I-69 poplar forest land was divided into three site classes by site index.更多还原