摘要
根据南亚热带海岛生态特征及其地理分布,选取九个具有代表性的海岛,采用反映营养盐限制特征的海水富营养化评价模式,评价了南亚热带海岛海水富营养化水平;通过与历史资料对比,分析了富营养化水平的变化趋势。结果表明,南亚热带海岛海域浮游植物生长普遍受磷含量的限制,其中紫泥岛、内伶仃岛、桂山岛、厦门岛和特呈岛海域处于磷限制潜在性富营养水平,南澳岛和上川岛处于磷限制中度营养水平,而湄洲岛和涠洲岛则尚处于贫营养水平;南亚热带海岛海域富营养化水平总体呈上升趋势。南亚热带海岛海域富营养化水平上升主要是由流域污染、城市污水和海水养殖污染等原因造成的。
Eutrophication status in the adjacent sea areas of nine typical subtropical islands along southern Chinese coast was assessed with a model which accounts for nutrient limitation.Change tendency of eutrophication level was analyzed based on comparison of nutrient data investigated during 1989-1992 and 2005-2007.The results showed that the growth of phytoplankton was usually phosphorus-limited in the sea areas of these subtropical islands.The sea areas of five islands were at the stage of phosphorus-limited potential eutrophication,and among them two were at the stage of phosphorus-limited slightly eutrophication,while the other two were at oligotrophic levels.The eutrophication state become much more serious in nearly 20 years for most island sea areas,which primarily resulted from the discharge of nutrients and pollutants from drainage basin,municipal wastewater and mariculture pollution.
出处
《海洋通报》
CAS
CSCD
北大核心
2010年第5期572-576,共5页
Marine Science Bulletin
基金
国家908专项资助项目(908-02-04-08)
海洋公益性行业科研专项经费重点项目(200705029)
关键词
富营养化
南亚热带海岛
评价
磷限制
eutrophication
south subtropical islands
assessment
phosphorus limitation
