Study of Water Quality and Eutrophication in Sanya Coastal Zone
Seasonal and spatial distribution of water quality was investigated at 29 stations in the Sanya coastal zone (SYCZ). Nutrients, chlorophyll-a (Chl-a), and other physical and chemical parameters were measured in April and September from 2007 to 2009. The concentrations showed ranges of 1.22—35.93 μ mol/L for dissolved inorganic nitrogen (DIN), 0.03—1.80 μ mol/L for phosphate (PO4-P), and 2.46—156.60 μ mol/L for silicate (SiO4Si). The result indicated that NO3—N and NO2—N were the main ingredients of DIN in most coastal zones. DIN was mainly influenced by domestic sewage coming from Sanya City and sea breed aquatics, while phosphate and silicate were generally controlled by river runoff. N/P ratios were also calculated, results suggested the restrictive nutrient was N in dry season and P in rain season. In the past two decades, concentrations of nitrogen and phosphate had markedly increased. It was too high for the natural growth of the coral and coral reef ecosystem in SYCZ.
coastal waters nutrient eutrophication evaluation Sanya coastal zone
Authors Name Zhenzhen Wu Authors Name Zhifen Lin
Key Laboratory of Tropical Marine Environmental Dynamics South China Sea Institute of Oceanology Chi Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Sc
国际会议
上海
英文
1884-1890
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）