【摘要】 本文描述了杭州湾口水中硅、氮、磷的分布和变化特征。经调查研究表明,其分布和变化特征主要由钱塘江径流、长江冲淡水和外海水决定。硅酸盐与盐度在12月呈正相关,5、7、10月呈负相关;硝酸盐与盐度都呈负相关;磷酸盐与盐度无明显相关。经初步计算,钱塘江径流硅、氮、磷的年输出通量分别为:101千吨Si/年,42.5千吨N/年和67.1×10^-2千吨P/年。更多还原

【Abstract】 The paper describes the distribution and changes of reactive silicate, nitrate and phosphate in the water near the mouth of Hangzhou Bay. The results show that they mainly depend on the runoff of Qiantang River, Changjiang River diluted water and the offshore water. It presents a positive relationship between silicate and salinity in December and negative relationship in May, July and October, while only negative relationship is presented between nitrate and salinity and no marked relationships between phoshate and salinity. The outflux of silicate, nitrate and phosphate in Qiantang River runoff are estimated to be 1014X103 t Si. y^-1, 42.5xl03t N·y^-1 and 0.671xl03t P·y^-1, respectively.更多还原