Liang Fang, Hu Ju, Lin Yutong, Li Lin, Yu Yanping, Liu Bing, Meng Zongxin, Xiang Zaijing, Tan Xiaohui
College of Smart Agriculture, Yulin Normal University, Yulin, 537000, China.
Guangxi Subtropical Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530001, China.
Sci Rep. 2024 Dec 28;14(1):31190. doi: 10.1038/s41598-024-82572-8.
This study evaluates the growth, survival pressures, and community dynamics of Barringtonia racemosa (L.) Spreng. populations in Jiulong Mountain and Suixi County, Guangdong Province. Six distinct plant communities were identified, with human disturbances significantly disrupting natural succession processes. The population in Jiulong Mountain, particularly within the Talipariti tiliaceum-B. racemosa community (JLS-T), experienced higher survival pressures compared to Suixi County. Interspecific competition varied, with species like Derris trifoliata, T. tiliaceum, and invasives such as Ipomoea cairica and Mikania micrantha exerting substantial pressure on B. racemosa. Analysis of 234 B. racemosa individuals revealed significant correlations between diameter at breast height (DBH), plant height, and age structure distribution, with a linear relationship between DBH and height underscoring their relevance in understanding wood volume, biomass, and stand structure. Survival pressures were inversely related to DBH, indicating reduced competition as trees matured. Growth patterns exhibited an age-dependent plateau in height, potentially influenced by environmental and anthropogenic factors. Management strategies should prioritize the growth of individuals with DBH less than 5 cm (age classes I ~ II). These findings underscore the need for targeted conservation efforts to protect B. racemosa communities and sustain wetland ecosystems.
本研究评估了广东省九龙山和遂溪县水黄皮种群的生长、生存压力及群落动态。识别出六个不同的植物群落，人为干扰显著扰乱了自然演替过程。与遂溪县相比，九龙山的种群，尤其是在杨叶肖槿 - 水黄皮群落（JLS - T）中，面临更高的生存压力。种间竞争各异，像三叶鱼藤、杨叶肖槿等物种以及诸如五爪金龙和薇甘菊等入侵物种对水黄皮施加了巨大压力。对234株水黄皮个体的分析显示，胸径（DBH）、树高和年龄结构分布之间存在显著相关性，DBH与树高之间的线性关系突出了它们在理解木材体积、生物量和林分结构方面的相关性。生存压力与DBH呈负相关，表明随着树木成熟竞争减少。生长模式在树高上呈现出年龄依赖性的平稳状态，可能受环境和人为因素影响。管理策略应优先考虑胸径小于5厘米（年龄等级I至II）个体的生长。这些发现强调了需要有针对性的保护措施来保护水黄皮群落并维持湿地生态系统。
