多因子对楠木容器苗造林生长影响的分析

A Study on Effects of Factors on the Growth of Phoebe bournei Container Seedling Planting

楠木(Phoebe bournei)是珍贵的阔叶树种,科学合理的培育楠木林资源,对珍贵用材资源的培育及森林可持续经营具有重要的现实意义。本研究采用裂区试验设计的方法,对吉安市楠木容器苗造林基地进行样地调查和资料收集,运用主成分分析和数量化理论模型Ⅰ方法,探讨不同楠木容器苗在不同施肥量、造林地类型及立地因子条件下造林的生长效应。结果表明:影响楠木造林当年生长的主要因子依次是容器苗类型、造林地类型、海拔、坡向及郁闭度,这些主要因子对楠木幼树生长的影响均达到极显著。

Phoebe bournei is a kind of precious broadleaved tree,cultivating Phoebe bournei forest resources scientifically and rationally has an important practical significance for cultivation and sustainable management of valuable timber resources.This study applied the split-plot experimental design method to survey and collect sample information on the forestation base of Phoebe bournei container seedling in Ji＇an city.The growth effect of different kinds of Phoebe bournei container seedlings was analysed under the conditions of different fertilization amounts,site types and site factors by using principal component analysis and the quantitative theory I model.The result showed that the dominant factors affecting the Phoebe bournei growth were container seedling type,site type,altitude,aspect and canopy density in planting in the first year.All the factors had significant growth effect on Phoebe bournei Sapling.