广西海滩红树林主要建群种的生态分布和造林布局

THE ECOLOGICAL DISTRIBUTION AND REFORESTATION ARRANGEMENT OF MAIN SPECIES OF MANGROVE IN SEABEACH OF GUANGXI

广西红树林分布区位于北热带,北纬21°24′～21°54′。组成红树林的植物计有14科21属22种。在潮间带,参与建群的植物种类主要是海榄雌、秋茄、桐花树、红海榄和木榄。这些植物在广西海岸的地理分布主要受冬温及淡水河流分布的制约,因而出现了地理上的间断分布;在潮间带的分布又受制于土壤质地、养分状况、环境盐度和潮汐泛滥程度,以及红树植物自身对盐渍生境的适应性,呈现出带状分布序列。在调查分析的基础上,提出了主要红树林建群种的造林布局意见。

The distribution areas of mangrove forest in Guangxi are located on the north tropical Zone, from 21°24′to 21°54′N. There are 22 species of mangrove plants belonging to 21 genera and 14 families. In the intertidal zone, the mangrove plants for establishing communities are mainly Auicenuia matina, Kandelia candel, Aegiceras curniculahiue, Rizopphura stylusu and Bruguiera gymnurrhiza. The geographical distribution(from east to west)of the mangrove plants is restricted by winter temperarure and fresh river distribution. So it prsents discontinuous distribution on geography. And the distribution in the intertidal zone is also influenced by soil texture, soil nutrients, environmental salinity as well as the mangrove’s adaptability to the salt environment. Thus, it appears to be zonary distribution. Based on the investigations, the plant series of main species of mangrove in the seabeach are suggested.