Estimation of culm volume reduction factors in five bamboo species (Phyllostachys spp.)
Estimation of culm volume reduction factors in five bamboo species (Phyllostachys spp.)
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DOI：
10.1007/s11676-018-0767-6
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发表时间：
2018-07
影响因子：
3
通讯作者：
A. Inoue;Miyuki Shimada;Motohiro Sato;H. Shima
中科院分区：
文献类型：
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作者：
A. Inoue;Miyuki Shimada;Motohiro Sato;H. Shima
中空的圆柱形茎是大多数竹种最显著的形态特征之一。根据竹子的中空结构，竹子的茎体积有两种不同的属性：表观茎体积（va：包括中空部分在内的总茎体积）和木质茎体积（vw：茎木壁的体积）。体积比定义为茎体积（fv）的减小系数。该方法可用于竹林生物量资源的定量分析和竹林碳储量的评价。然而，直接测量需要破坏性采样，这需要耗费时间和人力。因此，有一种获得所需fvis的替代方法。在本研究中，我们研究了毛竹属的5种植物，并提出了不同的估算方法。我们的数据显示，不同物种的差异，其中一些表现出依赖于茎的大小。这些研究结果表明，在进行基因转换时，应仔细考虑种内和种间的变异。根据我们的研究结果，我们提出了六种预测方法，并讨论了它们的优缺点。本研究结果旨在为竹林固碳能力的评价和竹竿的商业利用提供依据。
The hollow cylindrical culm is one of the most remarkable morphological characters of most bamboo species. In relation to its hollow structure, there are two different attributes of the culm volume in bamboo: the apparent culm volume (va: the total culm volume including the hollow portion) and the woody culm volume (vw: the volume of the woody walls of the culm). The ratio ofvwtovais defined as the reduction factor for culm volume (fv). The quantityfvis useful to quantify the biomass resources of bamboo culms as well as to evaluate the carbon stock of bamboo forests. However, the direct measurement offvrequires destructive sampling, which consumes time and labor. Hence, an alternative method for obtainingfvis desired. In this study, we examinedfvin five species of the genusPhyllostachysand proposed alternative methods to estimatefv. Our data showed thatfvvaried by species, some of which exhibited a dependency offvon culm sizes. These findings indicate that the intraspecific and interspecific variation infvshould be considered carefully when convertingvaintovwbyfv. Based on our results, we propose here six approaches for predictingfvand we discuss their advantages and disadvantages. Our results are intended to facilitate evaluation of the carbon sequestration capacity of bamboo forests and the commercial utilization of bamboo culms.