摘要
研究毛竹不同构件的含水率及其沿着不同梯度的变化规律,对于预测毛竹构件的含水率和估算其生物量及其碳储量都具有重要的应用价值。本文以皖南毛竹为研究对象,利用相关分析、回归分析及多重比较等方法对毛竹各构件含水率进行比较,同时分析其沿着年龄、海拔和立竹度3个梯度的变化规律。结果表明,皖南毛竹不同构件的含水率之间存在明显差异,最大的是竹蔸(55.51%),其次是竹叶、竹鞭、鞭根、蔸根、竹秆、竹枝;地上部分的平均含水率(45.76%)略小于地下部分(52.16%);皖南毛竹大部分构件的含水率随着年龄的增加而减小,且与年龄具有很好的幂指数关系(鞭和鞭根除外);各构件含水率与海拔梯度、立竹度之间没有显著的密切关系,但在这2者的影响下大致都呈"S"型变化趋势。
Study on water content （WC） of the different organs of moso bamboo and its changes along with different gradients is of important application value to predict the WC of bamboo organs and estimate its biomass and carbon sink. In this paper, moso bamboo in South Anhui was used as material to analyze the WC of their different organs using correlation analysis, regression analysis and multiple comparison, and examine the variations along with the bamboo age, altitude and culm density. The results showed that there were evident differences in WC between bamboo organs, in which pachymorph rhizome （PR） had the largest WC （45.76%）, followed by foliage, leptomorph rhizome （LR）, leptomorph rhizome root （LRR）, pachymorph rhizome root （PRR）, culm and branch. The mean WC of aboveground parts （45.76%） was slightly less than that of underground parts （52.16%）. The WC in most of bamboo organs decreased with the age, and exhibited strong power relationships except LP and LPR. No significant correlations were found between WCs of each organ and elevation as well as culm density, however, the WC showed an ＂S＂ type trend roughly under the influence of elevation and culm density.
出处
《世界竹藤通讯》
2013年第4期1-6,共6页
World Bamboo and Rattan
基金
国际竹藤中心基本科研业务费专项基金(1632012004)
关键词
构件
含水率
海拔
年龄
立竹度
毛竹
moso bamboo, organ, water content, altitude, age, culm density
