旨在研究沿坝地区华北落叶松胸径-树高的生长状况,以北沟林场不同林龄的华北落叶松纯林为研究对象,采用实地测量和解析的方法获取华北落叶松的胸径、树高实测数据,利用SPSS分别对不同模型进行拟合.经各项指标检验,初步筛选拟合精度较好的曲线模型H=1.929D^0.734(R²=0.939)和H=1.462+1.025D-0.012D²(R²=0.927)。将检验样木代回两个模型回归检验,进行树高的残差分析,其散点分布均匀,证明了两个模型的可靠性。运用各项误差分析指标判断,最终确定华北落叶松在本地域最佳胸径-树高模型为H=1.929D^0.734。模型的建立为树高的测量提供了捷径,有利于森林资源的清查工作。

This article is aimed at studying DHB-tree height growth conditions of North China larch. The pure larch stands of different ages in Beigou Forest Farm were taken the object of study.The data of DHB and tree height were obtained through the ways of measurement and stem analysis and SPSS was used to fit different models. After the indicator test and,preliminary screening,models of the better fiting precision are H=1.929D^0.734 (R²=0.939)and H=1.462+1.025D-0.012D²(R²=0.927).Using hights of standard tree regression test,the result showed the two models were reliable.According to the different indexes of error analysis the best model of North China larch is H=1.929D^0.734.The establishment of the model provides a shortcut for tree height measurement .It is conducive to the forest resources investigation.