中文摘要：

为研究样地红树林群落的景观特征、物种组成、物种多样性指数、立木级分布和高度级分布等指标,采用样带法和相邻格子样方取样法对深圳东涌5个样地的红树林进行样方调查。结果表明：东涌红树林以海漆为优势种群;群落由水到陆的生态序列依次为海漆-桐花树群落、海漆群落和黄槿-海漆-桐花树群落;东涌红树林群落的物种多样性较低,各样地的Shannon多样性指数和Simpson多样性指数变化范围在0.5631-1.4603及1.8364-2.6996之间;群落立木级结构分布显示出衰退群落的特征,Ⅳ级（41.96%）和Ⅴ级（41.22%）立木海漆数量占绝对优势。上述结果表明东涌红树林是我国少有的典型海漆群落,但该群落较易受到威胁,需要进行保护。

英文摘要：

Belt transect method and contiguous-grid quadrats method were used to measure mangrove communities in 5 different habitats of Dongchong, Shenzhen. Community characteristic, species composition, diversity, tree class structure and height class structure were analyzed. The results showed that Excoecaria agallocha was the dominant species of Dongchong mangrove. The ecological series from river to bank was Excoecaria agallocha-Aegiceras corniculatum community to Excoecaria agallocha community to Hibiscus tiliaceu-Excoecaria agallocha-Aegiceras corniculatum community. Shannon diversity index and Simpson diversity index of different site in Dongchong mangrove were 0.5631-1.4603 and 1.8364-2.6996. Ⅳ（41.96%） and Ⅴ（41.22%）tree classes were dominant classes of Excoecaria agallocha individuals in Dongchong, which means the community began to degrads. All the results indicated that mangrove of Dongchong was typical Excoecaria agallocha forest, and the forest was easy being threatened.