通过对比分析不同退塘还林修复模式的红树林群落结构特征，为退塘还林的实施提供科学依据。我们以天然红树林为对照，从物种组成、群落结构和物种多样性等角度比较了海南东寨港人工退塘还林、人工辅助退塘还林和自然修复3种修复模式的修复效果。结果表明，经过25年的修复，研究区红树植物共16种，人工辅助修复后的群落与天然林群落更为相似。3种修复模式群落结构发育良好，桐花树、海莲和无瓣海桑为该区域分布优势种，各模式群落自然更新潜力大，林下海莲和桐花树幼苗更新良好，随着群落的发展，退塘还林区域将向着以海莲、桐花树等乡土树种为主的方向更新演替。从物种多样性指数来看，人工退塘还林模式和人工辅助退塘还林模式的物种丰富程度、群落复杂程度及群落植物个体数量的均一程度高于自然修复模式和天然林。退塘还林工程中可根据立地条件，优先选择人工辅助退塘还林方式，加快红树林植被恢复进程、增加群落物种多样性，以快速重建良好的红树林湿地生态系统。

Through analysis the mangrove community structure characteristics in different restoration modes, it provides a scientific basis for the implementation of pond-to-mangrove. Using natural mangrove forest as a control, the effects of three restoration models, artificial pond-to-mangrove, artificially assisted pond-to-mangrove and namely natural restoration in Dongzhaigang National Nature Reserve of Hainan were compared from the perspective of species composition, community structure and species diversity. After 25 years of restoration, the results showed that,there were 16 species of mangrove plants in the study area, the communities after artificial assisted restoration were more similar to the natural forest communities. The community structure of the three restoration models was well developed, and the distribution of the dominant species was Aegiceras corniculatum, Bruguiera sexangula, and Sonneratia apetala. The natural regeneration potential of each model community was high, while the seedlings of Bruguiera sexangula and Aegiceras corniculatum were well renewed. In the context of community development, the area of pond-to-mangrove would renew and succession in the direction of the native species such as Bruguiera sexangula and Aegiceras corniculatum. From the perspective of the species diversity index, the species richness, community complexity, and the homogeneity of community plant numbers in both artificial pond-to-mangrove and artificially assisted pond-to-mangrove were higher than those in the namely natural restoration and the natural forest. According to the site conditions, artificially assisted pond-to-mangrove can be chosen first in the project to speed up the process of mangrove vegetation restoration and increase the diversity of community species to quickly rebuild the good mangrove wetland ecosystem.