Data from: Taxonomic and phylogenetic diversity of vascular plants at Ma’anling volcano urban park in tropical Haikou, China: Reponses to soil properties

Anthropogenic processes and socio-economic factors play important roles in shaping plant diversity in urban parks. To investigate how plant diversity of Ma’ anling urban volcano park in Hainan Province, China respond to these factors, we carried out a field investigation on the taxonomic and phylogenetic diversity of vascular plants and soil properties in this area. We found 284 species of vascular plants belonging to 88 families and 241 genera, which included 194 native species, 23 invasive species, 31 naturalized species, 40 cultivars, and 4 rare / endangered plant species. Tree composition and richness significantly varied between different vegetation formations (plantation, secondary forest, and abandoned land). Plant species richness and community composition were significantly affected by elevation (El), soil water content (WC), total soil nitrogen (TN) and soil organic matter (SOM). There were significant diversity differences between plantations and abandoned lands, but not between the plantations and secondary forests. The flora in the study site was tropical in nature, characterized by pantropic distributions. Compared to adjacent areas, floristic composition in the study site was most similar to that of Guangdong, followed by that of Vietnam. Our study revealed the diversity patterns of volcanic plants and provided the basis for future planning of plant conservation, such as preserving plant species, maintaining plant habitats, and coordinating plant management in this region.

人为活动过程与社会经济因素是塑造城市公园植物多样性的关键驱动因素。为探究中国海南省马鞍岭城市火山公园的植物多样性对上述因素的响应规律，本研究针对该区域维管植物（vascular plants）的分类学与系统发育多样性，以及土壤性质（soil properties）开展了野外调查。本次调查共记录维管植物284种，隶属于88科241属，其中包含本土物种194种、入侵物种（invasive species）23种、归化物种（naturalized species）31种、栽培品种（cultivar）40个，以及珍稀濒危植物物种（rare/endangered plant species）4种。不同植被型（vegetation formations）间的树木组成与物种丰富度存在显著差异，所涉植被型包括人工林、次生林（secondary forest）与弃耕地。植物物种丰富度与群落组成显著受海拔（El）、土壤含水量（soil water content, WC）、土壤全氮（total soil nitrogen, TN）及土壤有机质（soil organic matter, SOM）的调控。人工林与弃耕地间的植物多样性存在显著差异，但人工林与次生林间无显著差异。研究区域的植物区系具有典型热带属性，以泛热带分布（pantropic distributions）为主要分布特征。与周边区域相比，本研究区域的植物区系组成（floristic composition）与广东省最为相似，其次为越南。本研究揭示了火山型城市公园的植物多样性分布模式，可为该区域后续的植物保护规划提供科学支撑，具体包括植物物种保育、植物栖息地维护及区域植物资源管理协调等方向。