Spatial association of bamboos with trees in a commercial tree plantation forest in Myanmar
Spatial association of bamboos with trees in a commercial tree plantation forest in Myanmar
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DOI：
10.1017/s0266467423000172
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发表时间：
2023-08
影响因子：
1.4
通讯作者：
Toshihiro Yamada;Chihro Oshige;Miyabi Nakabayashi;T. Okuda;Aung Zaw Moe;E. Hlaing
中科院分区：
文献类型：
--
作者：
Toshihiro Yamada;Chihro Oshige;Miyabi Nakabayashi;T. Okuda;Aung Zaw Moe;E. Hlaing
摘要竹类植物主要分布于亚热带至热带地区。竹子提供了众多的生态系统服务，而竹子的扩张对森林生态系统造成了负面影响。尽管竹子对森林生态系统产生了很大的影响，但人们对竹子的生态特性仍然知之甚少。在缅甸勃固山地区的一处商品林中，研究了毛竹、多形竹和斑竹3种竹种的空间分布格局。点过程分析表明，每种竹子的分布都是聚集的。对每对两个物种的分布重叠进行了分析。Pergracile与D.maclellandii和B.Polya的分布几乎没有重叠。坡度平缓的坡地上的三尖杉数量明显较多，而坡度较大的坡地上的三尖杉数量较多。多形竹在地貌上没有表现出这些格局。Pergracile和D.maclellandii的独有分布可能至少部分是由该种相反的地形偏好解释的。虽然多形三尖杉倾向于在大树上发现，但多形三尖杉往往在远离遮荫的大树上发现，这表明多形三尖杉的耐荫能力可能比百叶三尖杉强。耐荫性的差异可能有助于该物种的独占分布。这项研究获得的栖息地偏好信息将有助于缅甸健全的竹子管理做法，并通过在森林中创造有利的栖息地来增加竹子种群数量。
Abstract Bamboos are mainly distributed in subtropical to tropical areas. Bamboos provide numerous ecosystem services, while the expansion of bamboo gives negative impacts on forest ecosystems. Despite big impacts of bamboos on a forest ecosystem, ecological characteristics of bamboo remain poorly understood. The spatial distributional patterns of three bamboo species, Cephalostachyum pergracile, Bambusa polymorpha, and Dinochloa maclellandii, were studied in a commercial tree plantation of native deciduous tree species in the Bago Mountains, Myanmar. A point process analysis revealed a clumped distribution for each bamboo species. The distributional overlapping of the species was analysed for every pair of two species. The distribution of C. pergracile was little overlapped with those of D. maclellandii and B. polymorpha. Cephalostachyum pergracile was significantly more abundant on gently sloping ridges, whereas D. maclellandii was more abundant on a steeply sloping site. Bambusa polymorpha did not show these patterns with topography. The exclusive distribution of C. pergracile and D. maclellandii may be, at least partly, explained by the opposite topographic preferences of the species. Cephalostachyum pergracile tended to be found far from large trees that cast shade, although B. polymorpha tended to be found with large trees, suggesting that B. polymorpha may be more shade tolerant than C. pergracile. The difference in shade tolerance may contribute to the exclusive distribution of the species. The habitat preference information obtained in this study will contribute to sound bamboo management practices in Myanmar and enable bamboo population sizes to be increased through creation of favourable habitats in forests.