小兴安岭北部地区主要阔叶树种一元材积表的编制

摘要

对小兴安岭北部地区优势阔叶树种如柞树、白桦、黑桦胸径及树高数据进行整理分析,应用Excel建立不同树种胸径和树高的散点图,运用SPSS软件中的非线性回归功能对各树种数据进行拟合,得到最优方程,藉此建立了几种主要阔叶树种的一元材积表.%Based on the data of DBH and tree height of broad-leaf tree species,oak,white birch,black birch in Xiaohingganling Mountains,this paper compiled the scatter plot of the DBH and tree height of different species by using Excel.This study also fit the data of each tree species using nonlinear regression of SPSS software,then obtained the optimal equation,whereby established the unitary volume table of hardwood species in northern Xiaohingganling mountains.