摘要
对林龄20年生6种造林密度的紫椴人工林固定试验样地调查数据分析表明,造林密度对保存率、树高、直径、直径分布、材积、蓄积均有明显影响。相同造林方式中,1.5m×1.5m株行距的中等密度保存率均高于其它两种密度,林分蓄积最大。研究结果表明,1.5m×1.5m株行距单株栽植是适宜的造林密度。
Analysis of investigation data regarding 6 kinds of planting densities on fixed plots of 20- year- old Tilia amurensis plantations was conducted. The results indicated that the influences of planting densities on reservation rates, height, DBH, DBH distribution, volumes of timber and stands were significant. Among the same planting patterns, the reservation rates of medium densities for 1.5m×1.5m rowing space were much higher than the other two densities, and volumes of stands were greatest. The results showed that 1.5m×1.5m rowing space was sttitable planling density for Tilia amurensis.
出处
《辽宁林业科技》
北大核心
2005年第6期1-3,23,共4页
Liaoning Forestry Science and Technology
基金
国家科技攻关项目(2002BA515B0505)
关键词
紫椴
造林密度
生长效应
Tilia amurensis
planting density
growth effects
