南黄海和东海海域营养盐等物质大气入海通量的再分析

Reanalysis of atmospheric flux of nutrients to the South Yellow Sea and the East China Sea

根据国内外学者近年来在黄、东海海域大气营养盐和硫酸盐气溶胶干、湿沉降方面的工作 ,估算出南黄海及东海海域各个季节营养盐和硫酸盐的大气入海通量。分析结果表明 :南黄海及东海海域营养盐和硫酸盐气溶胶浓度和降水中的离子浓度都有较明显的季节变化 ,基本上冬季最大 ,而夏季最小 ;氮盐和硫酸盐的沉降以湿沉降为主 ,而磷酸盐以干沉降为主 ;大气沉降与河流输送相比 ,NH4+ 和PO43 -以大气沉降为主 ,而SiO3 2 -和NO3

Based on the recent studies on dry and wet deposition of nutrient elements and sulphate in the Yellow Sea and the East China Sea, we estimate the atmospheric fluxes of nutrient elements and sulphate to the south Yellow Sea and the East China Sea in each season. The results suggest there are distinct seasonal variations in the dry and wet deposition fluxes of nutrient elements and sulphate. Depositions of DIN and sulphate are dominated by wet deposition while which for phosphate is main dry deposition. Moreover, comparing with riverine inputs, the atmospheric inputs of ammonium and phosphate are greater than that from river while rivers are the major source for nitrate and silicate.