文献类型：期刊文献

中文题名：江西大岗山不同密度毛竹林生物量分配特征及其模型构建

英文题名：Biomass Allocation Characteristics of Phyllostachys pubescens Forests with Different Densities in Dagang Mountain,Jiangxi Province and Its Model Construction

作者：江盈[1] 周宗顺[1] 武晓玉[1] 刘仁[1] 罗家萱[1] 万晨[1] 欧阳琼[1] 黄辉[1]

第一作者：江盈

机构：[1]中国林业科学研究院亚热带林业实验中心,江西新余336600

年份：2025

卷号：23

期号：5

起止页码：44-49

中文期刊名：世界竹藤通讯

外文期刊名：World Bamboo and Rattan

基金：江西省自然科学基金项目“锰肥对毛竹凋落物分解的影响及其对土壤碳稳定性的影响机制”(20242BAB20262)。

语种：中文

中文关键词：毛竹;林分密度;生物量模型;碳储量;江西大岗山

外文关键词：Phyllostachys pubescens;stand density;biomass model;carbon storage;Dagang mountain in Jiangxi province

分类号：S795.7

摘要：分析了江西大岗山不同林分密度(2000、3800和6400株/hm^(2))毛竹的生物量分配特征,并构建了毛竹林生物量模型。结果表明:1)毛竹地上部分生物量显著大于地下部分,其中竹秆生物量占单株生物量的比重最大(64.4%~69.0%),且随林分密度的增加呈先下降后上升的变化趋势。2)胸径和竹高与各器官生物量呈现显著相关性(P<0.05),在低密度林分中(2000株/hm^(2)),竹秆与单株生物量相关性最强,相关系数为0.982,竹龄对各器官生物量无显著影响;在中密度林分中(3800株/hm^(2)),胸径与单株生物量相关性最强,相关系数为0.946。3)异速生长方程(幂函数)在竹秆和单株生物量模型中表现最优,确定系数分别为0.97和0.98;不同器官生物量的最优模型形式存在差异,其中二次多项式对低密度林分的竹枝和竹根生物量估算效果好,三次多项式对高密度林分的竹枝生物量估算效果最佳。研究证实毛竹胸径和株高可作为毛竹生物量估算的核心参数。研究结果可为江西大岗山毛竹林结构优化和碳储量精准估算提供参考。
The biomass allocation characteristics of Phyllostachys pubescens at different stand densities(2000,3800 and 6400 culms/ha)in Dagang mountain,Jiangxi province,are analyzed,and a biomass model is constructed.The results show that:1)The aboveground biomass of Ph.pubescens is significantly higher than its underground biomass.The culm biomass has the largest proportion of the biomass of individual plant(64.4%-69.0%),presenting a trend of decreasing first and then increasing with the increase of stand density;2)DBH and bamboo height are significantly correlated with the biomass of each organ(P<0.05).In the low-density forest(2000 culms/ha),the correlation between bamboo culm and biomass of individual plant is the strongest,with a correlation coefficient at 0.982,and bamboo age has no significant effect on the biomass of each organ;in the medium-density forest(3800 culm/ha),the correlation between DBH and biomass of individual plant is the strongest,with a correlation coefficient at 0.946;and 3)The allometric growth equation(power function)is the best in the biomass models for bamboo culm and individual plant,with the determination coefficients of 0.97 and 440.98,respectively;the optimal model forms for different organ biomass are different,among which the quadratic polynomial has a good effect in the estimating of the biomass of bamboo branches and roots in low-density forests,and the cubic polynomial has the best effect in the estimating of the biomass of bamboo branches in high-density forests.The study confirms that DBH and plant height of Ph.pubescens are the core parameters for estimating its biomass.The research results can provide references for optimizing the moso forest structure and accurately estimating its carbon sink in Dagang mountain,Jiangxi province.