中国科学D辑(英文版)
中國科學D輯(英文版)
중국과학D집(영문판)
SCIENCE IN CHINA（SCIENTIA SINICA）
2002年
2期
103-109
,共7页
蔡平河%黄奕普%陈敏%刘矿山%邱雨生
蔡平河%黃奕普%陳敏%劉礦山%邱雨生
채평하%황혁보%진민%류광산%구우생
South China Sea%new production%228Ra%-N%euphotic zone
Measurement of 228Ra activities in the upper 300 m water column was conducted at two stations in the South China Sea using an MnO2-fiber extraction/b-counting technique of 228Ac. Results showed that 228Ra activities ranged from 0.38 to 3.60 Bq·m-3. The vertical profiles of 228Ra at the time-series station favored a steady state assumption. Based on a one-dimensional steady state model, 228Ra-nitrate coupled approach was applied to stations NS97-43, NS99-53 (T1), NS99-53 (T2). New production thus quantified were 4.4, 5.1 and 5.7 mmolC·m-2·d-1, respectively. f ratios in the South China Sea were estimated from the derived new production and the documented primary productivity in the regime, to be 0.12-0.15.
