雷州半岛近海夏季浮游植物和浮游细菌生物量的分布及其影响因素  

Biomass distribution of phytoplankton and bacterioplankton in coastal areas of Leizhou Peninsula in summer and related affecting factors

作　　者：郭凯旋[1] 张瑜斌[1] 章洁香[1] 孙省利[1] 

机构地区：[1]广东海洋大学海洋资源与环境监测中心,广东湛江524088

出　　处：《生态学杂志》2012年第1期8-15,共8页Chinese Journal of Ecology

基　　金：国家海洋局公益性项目(200905005-05和201105008-E)资助

摘　　要：于2010年7月(夏季)调查了雷州半岛近海海域浮游植物和细菌生物量的空间分布特征,并分析了其与海区主要环境因子间的相互关系。结果表明:雷州半岛近海海域夏季浮游植物生物量的变化范围为15.66～1114.92mg.m-3;平均值为192.49mg.m-3;夏季浮游细菌生物量的变化范围为3.36～50.12mgC.m-3,平均值为18.43mgC.m-3;浮游植物生物量水平分布格局在不同区域间没有显著差异,浮游细菌生物量的水平分布呈现西部海区>东部海区>南部海区的格局,差异极显著;浮游植物和浮游细菌生物量在表底层的垂直分布格局没有明显的规律,表、底层生物量或高或低,差异不显著;浮游植物和浮游细菌生物量多体现近岸站位>中间站位>远岸站位,即从陆向向海向呈递减的分布格局;夏季雷州半岛近海海域浮游细菌生物量与水温、pH和硅酸盐呈显著或极显著正相关,与盐度、TOC和磷酸盐呈极显著负相关;浮游植物生物量与pH和DO呈显著或极显著正相关,与盐度和TOC呈显极显著负相关;浮游植物生物量与浮游细菌生物量存在显著的正相关性,二者存在着相互影响的调控关系。In July 2010, a survey was conducted on the biomass spatial distribution of phytoplankton and bacterioplankton in the coastal waters of Leizhou Peninsula, with the related affecting factors analyzed. The phytoplankton biomass in the coastal waters in summer was 15.66-1114.92 mg·m^-3, with an average of 192.49 mg·m^-3, and the bacterioplankton biomass was 3.36-50.12 mg C·m^-3, with an average of 18.43 mg C·m^-3. No significant difference was observed in the horizontal distribution of phytoplankton biomass among different regions, but the horizontal distribution of bacterioplankton biomass had significant difference,being the greatest in western region,followed by in eastern, and in southern region.The biomass distribution of phytoplankton and bacterioplankton in surface water and in the bottom had no definite pattern and no significant difference. The biomass of phytoplankton and bacterioplankton was the greatest in near-shore stations, followed by in intermediate stations, and the least in far-shore stations, namely, decreasing from landward to seaward. The bacterioplankton biomass was significantly positively correlated with water temperature, pH, and silicate, and significantly negatively correlated with water salinity, TOC, and phosphate, whereas the phytoplankton biomass was significantly positively correlated with water pH and DO, and significantly negatively correlated with water salinity and TOC. There was a significant positive correlation between phytoplankton biomass and bacterioplankton biomass, implying the interactive regulation between them.

关 键 词：浮游植物 浮游细菌 空间分布 影响因素 雷州半岛 

分 类 号：Q948.8[生物学—植物学]