深圳福田红树林区藻类群落结构和生态学研究

Study on Community Structure and Ecology of Algae in Mangrove Areas in Futian, Shenzhen

对深圳福田红树林５个分布区的藻类种群、群落结构及生态学进行研究，得出其藻类种类数依次为２７，３７，５３，３２和３４，藻类密度依次为７６４８００，２２４０００，１０６２０００，３７４４００和２３８７６００个／Ｌ．下沙中藻类出现种类最多；保护区藻类密度最高，达超富营养水平。每区均以硅藻门藻类为绝对优势种类．此外尚有裸藻门及蓝藻门、绿藻门、隐藻门、金藻门出现．每个样区藻类的种群、群落构成有其特殊性，和藻类本身特性及浮游动物有较大关系．

The population, community structure and ecology of algae in five areas of Futian mangrove in Shenzhen are studied. It is found that there are 27, 37, 53, 32 and 34 species appeared in these five areas, respectively. The total density of algae in these five areas were 746 800, 224 000 , 1 062 000, 374 400 and 2 387 600 individual/L, respectively. The highest species number was fonnd in Xiasha area; the highest total algae density was found in Baohuqu area and it reached the eutrophication level.Bacillariohyta was the absolutely dominant group in each area, followed by Euglenophyta. Cyanophyta, Chlorophyta, Chrysophyta and Cryptophyta were also appeared. Algae hare their special population and community structure in each area and these were related with its distinct specilities and zooplankton groups. Furthermore, algae have pollution indicating and other ecological functions. Higher algal population density not only made the mangrove area having higher primary production but also made the ecosystem of the mangrove wetland more stable.