Local records of gregarious flowering of six major bamboo species over forty years in northern Laos and regional synchronicity of Dendrocalamus membranaceus in two flowering sites
Local records of gregarious flowering of six major bamboo species over forty years in northern Laos and regional synchronicity of Dendrocalamus membranaceus in two flowering sites
复制标题
老挝北部六种主要竹种四十年来群居开花的地方记录及两处开花地竹竹的区域同步性
DOI：
10.1007/s11629-016-3990-7
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发表时间：
2017
影响因子：
2.5
通讯作者：
Isao HIROTA
中科院分区：
文献类型：
--
作者：
M. Motoyama;T. Kimura;M. Ejiri;and Y. Iriyama;Isao HIROTA
竹子在东南亚大陆分布广泛，生物量丰富。它们的特点是延长营养生长和单胎。在竹子占主导地位的地方，它们的同步开花和死亡对森林植被有重大影响。尽管近年来，这一过程的小规模动态变得更加清晰，但竹子在广阔地区开花的历史，地理规模和同步性仍然未知。对老挝北方大面积分布的6种竹类（竹类）（竹竹类）的开花历史进行了研究。我们还研究了膜荚石斛开花的同步性。我们访问了老挝北方的49个村庄，并调查了有关竹子开花历史的知识渊博的居民。群聚开花的时间、规模和同步性因种而异。Hamilton Ⅱ和D.膜叶类植物开花的同步性高于其它种类。所有的物种除了我。结果表明，华支兰具有散生开花和群居开花两种开花特性，开花规模具有明显的变异性。在两个群聚开花地点的开花竹种群。对膜进行了测量。虽然该物种在这项研究中具有最高的同步性，但其同步性低于世界范围内以前研究中的其他物种。我们发现，在老挝北方的竹子在过去的40年中的群居开花表现出较低的同步性比在世界其他地区报道的竹子开花。竹子开花的历史动态和规模必须进一步澄清，以了解该地区的植被组成。
Bamboos are widely distributed in mainland Southeast Asia and have abundant biomass. They are characterized by prolonged vegetative growth and semelparity. Where bamboos are dominant, their synchronous flowering and death has a major impact on forest vegetation. Although the small-scale dynamics of this process have become clearer in recent years, the history, geographical scale and synchronicity of bamboo flowering over broad areas remains unknown. This study focused on the flowering history of six bamboo species,Bambusa tulda, Cephalostachyum virgatum, Dendrocalamus hamiltonii, Dendrocalamus membranaceus, Indosasa sinica and Oxytenanthera parvifolia, over 40 years across a broad area of northern Laos. We also examined the synchronicity of flowering inD. membranaceus. We visited 49 villages in northern Laos and surveyed knowledgeable inhabitants about bamboo flowering history. The timing, scale and synchronicity of gregarious flowering varied among species.D. hamiltoniiandD. membranaceusshowed higher flowering synchronicity than other species. All the species exceptI. sinicahad both sporadic and gregarious flowering traits, and showed conspicuous variability in their flowering scale. The flowering bamboo population at two gregarious flowering sites forD. membranaceuswas surveyed. While this species had the highest synchronicity in this study, its synchronicity was lower than other species in previous studies worldwide. We found that the gregarious flowering of bamboos in northern Laos over the last 40 years showed lower synchronicity than bamboo flowering reported in other areas of the world. The historical dynamics and scale of bamboo flowering must be further clarified to understand the vegetation composition of this area.