Community structure characteristics of mangrove communities in Huizhou mangrove reserves

We conducted systemic and comprehensive community survey of city-level mangrove natural reserves in January of 2013 in Huidong County of Huizhou City. 7 investigation sections and 21 investigation quadrat of 100 square meters were laid out. The mangrove plants in quadrat were measured and the indexes including type, diameter, plant height, density, composition of tree shape were recorded. The routine community analysis including importance and diversity was carried out. The growth characteristics of plants in this area were determinated and the succession dynamic change was researched. The investigation data showed that the mangrove in this area tended to develop and evolve from inside to outside and from continental margin to oceanic margin. Aricennia marina and Sonneratia apetala were the dominant species. Aegileras corniculaturn, Acanthus ilicifolius and Kenaelia candel were widely distributed. Acrostichum aureum and Excoecaria agallocha were fragmentarily distributed. The mangrove community in this area was mainly made up of 3 types of community, which were community of A. marina and A.scorniculatum, community of A.marina, Pagatpat and Acanthus, community of Pagatpat. The native and foreign tree species in this mangrove community have respectively original dominant community, and both of them tend to grow toward the opposite community area in the long-term community development, eventually firm the community where local species and foreign species grow together.