摘要
研究表明,混交林无论是在林木生长效益上,或是在经济和生态效益上,都优于纯林。本文以3种混交模式为研究对象,通过与纯林相比较,从中筛选出适宜的模式。结果表明:(1)马尾松桉树混交林对马尾松的胸径、树高等生长指标具有不同程度的提高作用,对桉树的胸径、树高和平均单株材积等生长指标具有显著提高作用。(2)随着林龄的增加,纯林与混交林在生长性状上的差距变小。(3)不同的混交模式中,混交模式1优于其他模式,并与其他模式和纯林间存在显著差异,在连年观测中表现出突出。种植马尾松1 a后再种植桉树的方法较马尾松与桉树同时种植的效果要明显。
Studies have shown that mixed forests can be superior to pure forests in terms of growth,economic values and/or ecological benefits.In this paper,three mixed plantation models were used as research objects,and the appropriate patterns were selected by comparison with pure forests.The results showed that:(1)mixed plantations of Pinus massoniana and Eucalyptus had different degrees of improvement in DBH,tree height and other growth indexes of P.massoniana,and significantly improved the growth indexes such as DBH,tree height and average tree volume of Eucalyptus.(2)As the forest age increased,differences between the pure and mixed forests in growth traits decreased.(3)Among the different mixture modes,mixture mode 1 was superior to the other modes,and there was a significant difference between the other modes and the pure forest,which was prominent in the later years of observation.The method of planting Eucalyptus one year after the planting P.massoniana proved more effective than planting Eucalyptus simultaneously with P.massoniana.
作者
颜权
李春宁
陆滟灵
刘奇林
李朱丹
郭东强
YAN Quan;LI Chunning;LU Yanling;LIU Qilin;LI Zhudan;GUO Dongqiang(Guangxi Paiyangshan State-owned Forestry Farm,Ningming 532500,Guangxi,China;Huashan Forestry Farm of Huanjiang Country,Huanjiang 547100,Guangxi,China;Guangxi Forestry Research Institute,Nanning 530002,Guangxi,China)
出处
《桉树科技》
2019年第3期28-35,共8页
Eucalypt Science & Technology
基金
广西林业科技项目(桂林科字〔2014〕第12号)
关键词
桉树
马尾松
混交林
生长效应
Eucalyptus
Pinus massoniana
mixed forest
growth effect
