%0 Journal Article %T 香港一富营养河港内的底泥耗氧和营养盐释放 %T Sediment Oxygen Demand and Nutrient Release in An Eutrophic Estuarine Embayment in Hong Kong %A H. Chua %A P. H. F. Yu %A M. W. L. Cheung %A H. Chua %A P. H. F. Yu %A M. W. L. Cheung %J 湖泊科学 %J Journal of Lake Sciences %@ 1003-5427 %V 10 %N s1 %D 1998 %P 275-282 %K eutrophication;land-locked estuaring embayment;Hong Kong;sediment nutrient release;sediment oxygen demand %K eutrophication;land-locked estuaring embayment;Hong Kong;sediment nutrient release;sediment oxygen demand %X Tolo Harbour has received massive discharges of municipal sewage, agricultural wastes and cottage industrial effluents, via three river systems, in the past two decades before the mid Eighties. The Harbour is almost land locked and poorly flushed. The soft sediment acted as a sink for nutrients and organic pollutants. After a decade of efforts in establishing and enforcing water pollution control legislations and upgrading wastewater treatment facilities, the sediments have turned into sources of nutrients and exert a measurable oxygen demand upon the overlying waters. In vitro measurements showed that the sediments oxygen demand (SOD) was between 17.6 and 54.3 mgo2 · m-2 · h-1. The maximum rates of release of ortho-phosphate phosphorus and ammonia nitrogen were 15.0 and 206.0 mg · m-2 · h-1, respectively. %X Tolo Harbour has received massive discharges of municipal sewage, agricultural wastes and cottage industrial effluents, via three river systems, in the past two decades before the mid Eighties. The Harbour is almost land locked and poorly flushed. The soft sediment acted as a sink for nutrients and organic pollutants. After a decade of efforts in establishing and enforcing water pollution control legislations and upgrading wastewater treatment facilities, the sediments have turned into sources of nutrients and exert a measurable oxygen demand upon the overlying waters. In vitro measurements showed that the sediments oxygen demand (SOD) was between 17.6 and 54.3 mgo2 · m-2 · h-1. The maximum rates of release of ortho-phosphate phosphorus and ammonia nitrogen were 15.0 and 206.0 mg · m-2 · h-1, respectively. %R 10.18307/1998.sup30 %U http://www.jlakes.org/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0