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为了解深圳坝光银叶树群落的结构特征、物种多样性与演替情况以及群落内古树保护现状,采用样带法全面调查了深圳坝光银叶树群落,基于生境特点将群落分成3个不同生境类群,分析了不同生境群落多样性及演替趋势。结果表明:该群落由89个种群组成,隶属于35科73属,其中银叶树种群在乔木层、幼树层和幼苗层的重要值均为最高,阴香、九节、海芒果等也占有较大优势。群落中2.5 m以下的幼树占各种群数量的83.26%,其中78.37%的幼树是银叶树,表明银叶树群落的演替趋势处于“金字塔”型的正方向发展。3种生境类型群落多样性指数高低呈现为:邻海陆地生境群落>远离海岸的陆地生境群落>滨海沼泽湿地生境群落,随着群落的发展,邻海陆地和远离海岸的陆地生境群落种群的多度将增加,而滨海沼泽湿地生境群落则逐渐衰退。由于人为和自然因素的威胁,坝光银叶树已表现出一些濒危的特征,需加强保护。
In order to understand the structural characteristics, species diversity and succession and the protection of ancient trees in the community of Baqiaoxiang, a comprehensive investigation was carried out on the community structure of the trees in the tree bank of Ba Guang, Different habitat groups, analyzed the diversity and succession trend of different habitats. The results showed that the community consisted of 89 populations and belonged to 73 genera of 35 families. Among them, the important value of the population was the highest in tree layer, young tree layer and seedling layer, Have a greater advantage. The young trees below 2.5 m in the community accounted for 83.26% of the total population. 78.37% of the young trees were silver leaf trees, indicating that the succession trend of the silver leaf tree community was in the positive direction of the “pyramid”. The community diversity index of three habitat types showed as follows: the community of the adjacent sea land> the group of the land habitat far away from the coast> the habitat community of the coastal marsh wetland, with the development of the community, the population of the land habitat of the adjacent land and far away from the coast were more The degree will increase, while the coastal marsh wetland habitat community will gradually decline. Due to the threat of man-made and natural factors, Ba-bao silver leaf tree has shown some endangered features and needs to be strengthened.