Allometric growth reflects different allocation patterns and relationships of different components or traits of a plant and is closely related to ecosystem carbon storage. As an introduced species, the growth and carbon storage of Sonneratia apetala are still unclear. To derive allometric relationships of the mangrove S. apetala and to estimate carbon storage in mangrove ecosystems, we harvested 12 individual Sonneratia apetala trees from four different diameter classes in the Futian National Nature Reserve, Guangdong, China. Allometric growth models were fitted. The results showed that diameter at breast height (DBH) and wood density were better variables for predicting plant biomass (including above- and below-ground biomass) than plant height. There were significant power function relationships between biomass and DBH, with a mean allometric exponent of 2.22, and stem biomass accounted for 97% of the variation in S. apetala total biomass. Nearly isometric scaling relationships were developed between stem biomass and other biomass components. To better understand the carbon stocks of the S. apetala ecosystem, we categorized all trees into five age classes and quantified vegetation carbon storage. The S. apetala vegetation carbon storage ranged from 96.48 to 215.35 Mg C ha⁻¹, and the carbon storage significantly increased with stand age. The allometric equations developed in this study are useful to estimate biomass and carbon storage of S. apetala ecosystems.

异速生长反映了植物的不同分配模式以及不同成分或性状的关系，并且与生态系统的碳储存密切相关。作为一种外来物种，Sonneratia apetala的生长和碳储量仍然不清楚。为了得出红树林S. apetala的异形关系并估算红树林生态系统中的碳存储量，我们收获了12株Sonneratia apetala来自广东福田国家级自然保护区的四种不同直径类别的树木。拟合了异速生长模型。结果表明，与植物高度相比，胸高（DBH）直径和木材密度是预测植物生物量（包括地上和地下生物量）的更好变量。生物量与DBH之间存在显着的幂函数关系，平均异速指数为2.22，茎生物量占S. apetala总生物量变化的97％。在茎生物量和其他生物量成分之间建立了几乎等距的比例关系。为了更好地了解S. apetala生态系统的碳储量，我们将所有树木分为五个年龄类别并量化了植被碳储量。的无瓣海桑植被碳存储范围从96.48到215.35镁Ç公顷^-1，并与支架年龄碳存储显著增加。在这项研究中开发的异速方程可用于估计S. apetala生态系统的生物量和碳储量。