摘要
大兴安岭林区兴安落叶松(Larix gmelinii)作为建群种,其人工林资源的面积、蓄积正在不断扩大,成为了大兴安岭林区森林资源的有效补充。利用内蒙古自治区第二林业监测规划院(简称林勘二院)提供的解析木原始数据,采用SPSSV19.0拟合树木生长方程,分别建立了兴安落叶松人工林单木树高和胸径生长模型,对两个模型进行检验、评价,得到其回归系数(R^2)、均方误差(MSE)以及拟合效率(EF),结果均符合模型检验标准,证明模型具有较高的稳定性和估计性。最终确定兴安落叶松人工林树高生长模型为H=22.588(1-e^-0.032t),胸径生长模型为D=26.94e-^9.83/t。
Larix gmelinii in Daxing′anling forest area,as a constructive species,is expanding its area of plantation resources,which has become an effective supplement to forest resources in Daxing′anling forest area.In this paper,based on the original data of stem analysis compiled by Inner Mongolia Second Forestry Survey and Design Institute,SPSS 19.0 data statistical software was used to fit tree growth equation.The tree growth models of tree height and DBH of Larix gmelinii plantation were established and the two models were tested and evaluated,and it was found that their regression coefficients (R^2),mean square errors (MSE) and fitting efficiencies (EF) were all in accordance with the model test criteria,proving that the models have high stability and estimability.The results showed that the height growth model of Larix gmelinii plantation is H=22.588(1- e^-0.032t );the DBH growth model of Larix gmelinii Plantation is D=26.94 e-^9.83/t .
作者
萨如拉
徐加睿
王智慧
张科
于宪军
SA Rula;XU Jiarui;WANG Zhihui;ZHANG Ke;YU Xianjun(College of Forestry.Inner Mongolia Agricultural University,Hohhot 010019,China;Second Forestry Monitoring and Planning Institute of Inner Mongolia Autonomous Region,Ulanhot,137400,China;Mianduhe Forestry Bureau,Hulunbeir,022176,China)
出处
《林业资源管理》
北大核心
2019年第2期88-92,共5页
Forest Resources Management
基金
内蒙古自然科学基金项目(2017MS0305)
关键词
兴安落叶松人工林
树高
胸径
生长模型
模型拟合和检验
Larix gmelinii plantation
tree height
diameter at breast height
growth model
model fitting and validation
