不同林分密度楠木人工林生物量初步研究  

Preliminary study on the biomass of Phoebe bournei plantation with different density and site condition

作　　者：彭龙福[1] 

机构地区：[1]福建省南平市林业局,福建南平353000

出　　处：《福建林业科技》2008年第4期15-18,23,共5页Journal of Fujian Forestry Science and Technology

基　　金：福建省科技厅重点科学基金资助项目(2005T012)

摘　　要：对福建省顺昌埔上国有林场不同林分密度的37年生楠木人工纯林的生物量及分配进行调查和分析，结果表明：低密度林分（1500--1650株·hm^-2）楠木单株标准木的平均生物量为56．52kg.株^-1，是高密度林分（2200～2400株·hm^-2）的1．39倍。单株标准木各器官的平均生物量均随林分密度的增加而减小；楠木人工林乔木层生物量随林分密度的增加而增大，乔木层总平均生物量在干材中的分配基本不受林分密度的影响（低密度的为53．59％，高密度的为53．72％），在根、皮中的分配比例随林分密度的增大略有增大，而在枝与叶中的分配比例则随密度的增加而下降。各器官生物量均存在干材〉根〉皮〉枝〉叶这一规律，其中干材生物量占总物量的比例最大，均超过了50％，最大达到61．11％。The biomass and allocation of 37-year-old Phoebe bournei plantations were studied in different density in Shunchang Forestry Farm in Fujian province. The results were as follows： in lower density spatiality （1 500--1 650 trees.hm^-2）, the average biomass of single tree was 56.52 kg.tree^-1 which was as large 1.39 times as higher density spatiality （2 200-2 400 trees.hm^-2）. The average biomass in differernt organs of single tree decreased with the increase of the density. The biomass of arbor layer increased with stand density increasing, the allocation in stem of the total average biomass of tree layer had hardly effect on plantation density, the biomass allocation ratio of root, and bark raised a little with the increase of density, but decreased of branch and leaf. The rule of the biomass in every organ was stem 〉 root 〉 bark 〉 brach 〉 leaf, and the biomass ratio of stem was the largest, which was more than 50 % and the largest one was 61.11%.

关 键 词：楠木 人工林 林分密度 生物量 

分 类 号：S792.24[农业科学—林木遗传育种]