摘要
1998年 2和 9月在长江河口淡水端连续观测了DIN (NO-3 ,NO-2 ,NH+ 4) ,PO3 -4 ,流速和流向 .结果表明 ,溶解态无机氮、磷浓度的时空变化较复杂 ;1 998年 2月NO-3 ,NO-2 ,NH+ 4和PO3 -4 的月通量分别为 1 6 82 4 1 ,974 4 ,1 9335和 2 6 48t,9月的月通量分别为 90 56 78,831 7,5797和 6 2 81t;1 998年NO-3 ,NO-2 ,NH+ 4和PO3 -4年通量分别为 4 97 1× 1 0 4,3 91 1× 1 0 4,1 0 2 2× 1 0 4和 4 1 55× 1 0 4t.
In February and September 1998, concentrations of nutrients (NO - 3, NH + 4, NO - 2 and PO 3- 4), velocity and direction were continuously observed at freshwater end member in the Changjiang Estuary. The results are as follows: Spatio temporal variation of concentrations of NO - 3, NO - 2, NH + 4 and PO 3- 4 are very complicated. In February 1998, the fluxes of NO - 3, NO - 2, NH + 4 and PO 3- 4 are 168 241 , 974 4, 19 335 and 2 648 t , respectively. In September 1998, the fluxes of NO - 3, NO - 2, NH + 4 and PO 3- 4 are 905 678 , 8 317 , 5 797 and 6 281 t , respectively. In 1998, the fluxes of NO - 3, NO - 2, NH + 4 and PO 3- 4 are 4 971 , 39 11, 102 2 and 41 55 kt, respectively.
出处
《海洋学报》
CAS
CSCD
北大核心
2002年第4期34-43,共10页
基金
国家自然科学基金资助项目 (49736 2 2 0 )
关键词
长江河口
淡水端
溶解态无机氮
磷
通量
时空变化
Changjiang Estuary
freshwater end member
dissolved inorganic nitrogen, phosphorus
flux
