Li Xujie, Zhao Wanyi, Sun Xianling, Zhang Xuejiao, Liao Wenbo, Fan Qiang
State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Shenzhen Dapeng Peninsula National Geopark, Shenzhen 518116, China.
Plants (Basel). 2024 Dec 20;13(24):3567. doi: 10.3390/plants13243567.
Climate and geological diversity have been proven to make an important contribution to biodiversity. Volcanic ecosystems often have a long geological history and diverse bedrock, thus shaping a variety of habitats. Understanding the relative importance and role of the contemporary climate and geological bedrock environment in volcanic biodiversity still needs further exploration. To address this knowledge gap, we investigated the patterns of plant diversity and phylogenetic structure at the community level in Qiniangshan Mountain, while also exploring the relationship between biodiversity and regional environmental factors (e.g., climate and bedrock types). In the Qiniangshan Mountain plant communities, species richness is higher at mid-to-high elevations. Montane communities exhibit higher species richness compared to coastal communities. There are significant differences in species richness among plant communities on different bedrock, with the highest species richness found on pyroclastic lava. Bedrock, along with climate factors related to energy and precipitation, collectively influence the patterns of species richness in plant communities. The Net Relatedness Index (NRI) of plant communities is influenced by climate factors and aspects, while the Nearest Taxon Index (NTI) is affected by both bedrock and climate factors. The Phylogenetic Diversity Index (PDI) is primarily related to climate factors. Climate and bedrock collectively influence the patterns of species richness and phylogenetic structure within Qiniangshan Mountain's plant communities. These findings highlight the profound impact of both climate and bedrock on montane vegetation and community biodiversity.
气候和地质多样性已被证明对生物多样性有重要贡献。火山生态系统通常具有悠久的地质历史和多样的基岩，从而形成了各种栖息地。了解当代气候和地质基岩环境在火山生物多样性中的相对重要性和作用仍需进一步探索。为了填补这一知识空白，我们调查了七娘山植物群落水平上的植物多样性和系统发育结构模式，同时还探讨了生物多样性与区域环境因素（如气候和基岩类型）之间的关系。在七娘山植物群落中，中高海拔地区的物种丰富度较高。山地群落的物种丰富度高于沿海群落。不同基岩上的植物群落物种丰富度存在显著差异，火山碎屑熔岩上的物种丰富度最高。基岩与与能量和降水相关的气候因素共同影响植物群落中物种丰富度的模式。植物群落的净亲缘关系指数（NRI）受气候因素和坡向的影响，而最近类群指数（NTI）受基岩和气候因素的共同影响。系统发育多样性指数（PDI）主要与气候因素相关。气候和基岩共同影响七娘山植物群落内物种丰富度和系统发育结构的模式。这些发现突出了气候和基岩对山地植被和群落生物多样性的深远影响。
