期刊论文

中文

林业资源管理

1002-6622

2017

4

37-43

10.13466/j.cnki.lyzygl.2017.04.007

全国森林经营科技支撑科研专项（169201531-6） 中南林业科技大学研究生科技创新基金资助项目（CX2016B18） 湖南省自然科学基金（2015JJ3175）

本校为第一机构

为了培育珍贵树种大径材,如何确定目标树密度,使其既利于目标树的生长、又能充分发挥林地生产力是 闽楠人工林经营的关键.在金洞林场,选择具有代表性的14a生闽楠人工林,设置3块20m ×30m的标准地,根 据近自然经营的目标树选择标准选择备选目标树,1,2,3号标准地确定的备选目标树分别为11,15,14株. 借助ArcGIS软件,依据林木的空间位置生成Voronoi图确定每株备选目标树的竞争单元,计算每株备选目标树 的V-Hegyi竟争指数和大小比数.依据备选目标树V-Hegyi竟争指数与大小比数数值的变化范围将V-Hegyi竟争 指数和大小比数划分为3个等级,V-Hegyi竟争指数与大小比数均为第-等级的确定为最终目标树.3个标...

In order to cultivate precious tree species of large diameter timber,the key is to manage Phoebe Bournei artificial pure forest and to determine the target tree density so that it can be beneficial to the growth of the target trees and to give full play to the productivity of the forest. In Jindong Forest Farm,the representative of the 14 year old Phoebe Bournei plantation was selected,and three sample spots （20m ×30m） were set. In these three sample spots,respectively, 11,15 and 14 trees were selected as alternative target trees according t...