用曲线回归方程分析人工油松林最佳经营密度  

Analysis on the best management density of artificial Pinus tabulaeformis by curve regression equation

作　　者：王红超 WANG Hongchao(Planning&Resource Bureau of Jinzhong,Jinzhong 030600)

机构地区：[1]晋中市规划和资源局,山西晋中030600

出　　处：《林业建设》2020年第4期26-29,共4页Forestry Construction

摘　　要：林分密度是影响林木胸径和材积生长的重要因素之一,在很大程度上决定了林分的产量结构,林分密度又是在营林工作中能够有效控制的因子,因此研究林分的最佳经营密度对实现林业产出最大化具有重要意义。分析山西省寿阳县国营罕山林场12个不同密度的人工油松林样地5年内的胸径生长量和生长率、蓄积生长量和生长率数据,拟合曲线回归方程,分析最佳经营密度。研究认为,以培养大径阶木材为目的的人工油松林最佳密度宜在900株/ha左右;以发挥森林生态功能或提升总体林分产量为目的的的人工油松林最佳密度宜控制在1320株/ha左右。寿阳县国营罕山林场油松人工林全部为生态公益林,培育目标是实现森林生态效能最大化,因此株密度应控制在1320株/ha左右。Stand density is one of the important factors affecting the growth of DBH and volume of forest,which determines the yield structure of forest to a large extent,and it is also an effective factor to control in forest management.Therefore,it is of great significance to study the optimal management density of forest to maximize the forest yield.In this paper,the data of DBH growth and growth rate,volume growth and growth rate of 12 different density artificial Pinus tabulaeformis plots in 5 years in Hanshan forest farm are analyzed,and the best management density is analyzed by fitting curve regression equation.The results showed that the best density of artificial Pinus tabulaeformis forest for the purpose of cultivating large-scale timber was about 900 trees / ha,and the best density of artificial Pinus tabulaeformis forest for the purpose of giving full play to the ecological function of the forest or improving the total stand yield was about 1320 trees / ha.All the Pinus tabulaeformis plantations in the state-owned Hanshan forest farm are ecological public welfare forests,and the cultivation goal is to maximize the ecological efficiency of the forest,so the plant density should be controlled at about 1320 plants / ha.

关 键 词：曲线回归 人工油松林 最佳密度 

分 类 号：S753.3[农业科学—森林经理学]