【摘要】 <正>河流把陆源物质带入海洋,是补充海水化学成分的主要来源之一。河口滨海区是海洋中成分变化最剧烈的区域,河水与海水的混合过程,伴随着水体的水文及物理化学条件的急剧变化,发生了一系列化学的和生物化学的变化,氧化还原反应,溶解-沉淀作用以及吸附-脱附作用,这些作用每时每刻都在进行。同时,河口地区人口稠密,工农业污水和生活污水的排入,对水体的化学成分影响甚大。因此,河口滨海区诸化学成分的化学特性是异常复杂的。更多还原

【Abstract】 This paper describes major features and the axial distribution of N, P, Si in the estuarine mixing process of Jiulong River once in a month from November 1982 to December 1983 and discusses the relationships between nutrients (N, P, Si) and salinity, turbidity as well. We have also estimated the nutrient fluxes of Jiulong River with its runoff discharge.The results of monthly surveying have shown that concentrations of N, P, Si were dominated in this estuary by rainfall especially in freshwater area, that nitrate was principally conservative and inorganic removal of phosphate and silicate occurred during estuarine mixing, especially in the region with salinity less than 4‰ that removal of silicate averaged to an extent of 4.2-31.7%, of phosphate was pertinent to suspended particula-tes in the water.The fluxes of nutrients (N, P, Si) of Jiulong River during 1983 were estimated to be 5.7 KT/Y for nitrate, 57-109 T/Y for phosphate, 125 KT/Y for silicate, respectively.更多还原