摘要
为掌握太子山主要针叶树种的干形特征,以指导当地林木干形评价、毁林案件定性、森林经营管理,笔者以马尾松、杉木和柏木为研究对象,分析其地径、树高、冠径与胸径的关系。结果表明:(1)马尾松的地径D0.05、D0.10与胸径呈线性关系,其余树种地径D0.05、D0.10与胸径间呈二次函数关系;3个树种的地径D0.20、D0.30、D0.50与胸径均呈线性关系。(2)3个树种的树高与胸径均呈三次函数关系。(3)冠径与胸径的关系中,马尾松与柏木都呈幂函数关系;杉木为三次函数关系。
In order to get the tree stem feature of the major coniferous tree species to evaluating tree stem form,determining deforestation cases,and inproving forest management in Taizishan,we analyzed the relationship between the ground diameter,the Height,the Crown diameter and the DBH of Pinus massoniana,Chinese fir and Cupressus funebris.The conclusions are as following:(1)There is a quadratic function between Ground diameter(D0.05,D0.10)and DBH except that pinus massoniana is only a linear relationship.Ground diameter(D0.20,D0.30,D0.50)and DBH obey linear relationship.(2)The relationship between tree height and DBH is cubic.(3)There is a power function between crown diameter and DBH except that Chinese fir is a cubic function.
作者
周欢
乐祥明
杨秋芬
梁杰
徐海超
Zhou Huan;Le Xiangming;Yang Qiufen;Liang Jie;Xu Haichao(Taizishan Forest Management Bureau of Hubei Province, Jingmen 431822)
出处
《湖北林业科技》
2020年第5期10-12,16,共4页
Hubei Forestry Science and Technology
关键词
胸径
地径
树高
冠径
相关关系
ground diameter
tree height
crown diameter
DBH
relationship
