三种森林类型不同龄组林木年均生长量差异性分析

Difference Analysis on Forest Annual Average Growth of Different Age Groups of Three Forest Types

摘要:

摘要：为掌握闽北地区杉木、马尾松和阔叶树3种主要森林类型不同龄组林木年均生长量差异程度和变化趋势，以福建省松溪县362个样地调查数据为基础，测算每个样地林木单株年均生长量；分幼龄林、中龄林、近熟林和成熟林4个龄组，采用SPSS软件，进行不同龄组单株年均生长量差异性分析；结果表明：杉木组间差异显著，马尾松组间差异极为显著，阔叶树各龄组年均生长量没有显著差异。

Abstract:

Abstracts:In order to study the difference degree and trend of annual average growth of three main forest types of Cunninghamia lanceolata,Pinus massoniana and broad leaved trees in northern region of Fujian province,we calculated the single plant annual average growth through the survey data of 362 plots.Each type was divided into four age groups of young forest,middle age forest,near mature forest,mature forest,and single plant annual average growth difference was analyzed using the SPSS software.The results showed that it was significant different for the groups of Cunninghamia lanceolata,and extremely significant different for the groups of Pinus massoniana and not significant different for the groups of broad leaved trees.