毛竹人工林生物量结构变化研究  

Biomass structure change of Phyllostachys pubesens plantation

作　　者：林建忠[1] 梁文斌[1] 曹流清 林斌[1] 唐晓春[1] 李星桦 粟林丽 

机构地区：[1]会同县林业局,湖南会同418300 [2]会同县林业科学研究所,湖南会同418300

出　　处：《湖南林业科技》2016年第1期86-92,共7页Hunan Forestry Science & Technology

基　　金：怀化市林业科技推广项目[怀发(2002)6];会同县楠竹低改项目[中会农(2000)04]

摘　　要：对会同县经营10年的毛竹人工林林分生物量结构变化进行研究，结果表明：人工竹林不同龄级、径级、枝下高级和不同密度的生物量分配，81．2％生物量分配于1-7年生幼龄、壮龄、中龄竹；83．4％生物量分配于胸径11—15cm之内；90．7％的生物量分配于枝下高7～11m之内；86．2％生物量分配于立竹4500～9000株／hm2的林分之内，其中立竹4500～6750株／hm2的中密度林分，群体和个体生物量都表现出较高的水平。试验竹林垂直总生物量和地上、地下生物量比对照竹林分别增多1．81倍和1．97倍、1．56倍，地上与地下生物量之比为1．774：1，经济系数为0．501，生物量从大到小的排序，地上部分为秆〉枝〉叶〉凋落物〉竹箨〉退笋，地下部分为鞭根〉竹鞭〉竹蔸〉竹根〉死鞭。The biomass structure change of bamboo stand of 10 years old was studied, the results showed that according to different age, DBH, height under branch and density, 81.2% of the biomass allocated in 1 -7 years old young and middle age strong bamboo, 83.4% of the biomass aUocated in 11 -15 cm DBH, 90. 7% of the biomass allocated in height under branch within 7 - 11 m, 86. 2% of biomass allocated in stand density within 4 500 -9 000 plants/hm2, in the 4 500 -6 750 plants/hm2 medium density bamboo forest, group and individual biomass showed a higher level. The vertical total biomass and the ground, underground biomass of test bamboo increased compared with control bamboo 1.81 times and 1.97 times, 1. 56 times respectively, the ratio of the aboveground and underground biomass was 1. 774 ： 1, the economic level coefficient was 0. 501. Each component of biomass from big to small order, the aboveground part was stem 〉 branch 〉 leaf 〉 litter 〉 bamboo sheath 〉 shoots back, the underground part was rhizome root 〉 bamboo rhizome 〉 bam- boo stump 〉 bamboo root 〉 dead rhizome.

关 键 词：毛竹 人工林 生物量结构 变化规律 

分 类 号：S795.7[农业科学—林木遗传育种]