Spatial Distributions and Seasonal Variations of Dissolved Black Carbon in the Bohai Sea, China
Spatial Distributions and Seasonal Variations of Dissolved Black Carbon in the Bohai Sea, China
复制标题
DOI：
10.2112/si74-019.1
复制
发表时间：
2016-06
期刊：
影响因子：
--
通讯作者：
Guopei Huang;Yingjun Chen;C. Tian;Jianhui Tang;Hua Zhang;Yongming Luo;Jun Li;Gan Zhang
中科院分区：
文献类型：
--
作者：
Guopei Huang;Yingjun Chen;C. Tian;Jianhui Tang;Hua Zhang;Yongming Luo;Jun Li;Gan Zhang
摘要黄兴平；陈永杰；田振国；唐建华；张海华；罗永明；李俊，张光，2016。中国，渤海溶解黑碳的空间分布和季节变化。为了研究渤海溶解黑碳浓度的时空变化，中国于2010年至2014年在渤海6个航次的141个采样点采集了495个不同水深、不同季节的海水样品，采用分子标志法-苯多羧酸法对溶解黑碳进行了定量测定。渤海海域平均浓度为96.6±32.9μg L−1(n=4 95)，莱州湾为136.2±33.7μg L−1(n=2 8)，渤海湾为131.2±30.3μg L−1(n=44)，辽东湾为86.3±16.1μg L−1(n=6 6)，渤海中部为89.6±19.8μg L−1(n=2 77)，渤海海峡为5 7.8±8.6μg L−1(n=80)。在水平分布上，DBC浓度从沿海到近海、从渤海内海到渤海海峡呈现明显的下降趋势，但垂直水柱的DBC浓度差异不显着(p>；0.1)。渤海中部和渤海海峡春季、夏季、秋季和冬季的DBC平均浓度具有可比性。但不同季节DBC浓度变化明显，春季渤海海峡南部DBC浓度低于北部，而秋季和冬季则相反。DBC浓度模式的季节变化与洋流的季节变化一致，表明DBC可作为流体动力学研究的潜在标志。
ABSTRACT Huang, G. P.; Chen, Y. J.; Tian, C. G.; Tang, J. H.; Zhang, H.; Luo, Y. M.; Li, J., and Zhang, G., 2016. Spatial distributions and seasonal variations of dissolved black carbon in the Bohai Sea, China. To investigate the temporal and spatial variations of dissolved black carbon (DBC) concentrations in the Bohai Sea, China, 495 seawater samples on 141 sites were collected in different water depths and seasons in six cruises from 2010 to 2014 for DBC quantification by the molecular marker method-benzene polycarboxylic acid method. The average concentration of DBC was 96.6 ± 32.9μg L−1(n = 495)in the entire Bohai Sea,while it was 136.2 ± 33.7 μg L−1(n = 28) in the Laizhou Bay, 131.2 ± 30.3 μg L−1(n = 44) in the Bohai Bay, 86.3± 16.1μg L−1(n = 66) in the Liaodong Bay, 89.6±19.8μg L−1(n = 277) in the Central Bohai Basin and 57.8 ± 8.6 μg L−1(n = 80) in the Bohai Strait respectively. DBC concentrations showed a distinct decreasing trend from coastal area to offshore area and from the internal Bohai Sea to the Bohai Strait in horizontal distribution although no significant differences(p> 0.1)was observed in the vertical water column. The average DBC concentrations of the Central Bohai Basin and the Bohai Strait in spring, summer, autumn and winter were comparable. However the DBC concentration patterns in different seasons varied significantly, such as the DBC concentrations were lower in the southern than northern of the Bohai Strait in spring, but it was inversed in autumn and winter. The seasonal variations of DBC concentration patterns followed the seasonal variations of ocean currents, suggesting that DBC would serve as a potential marker for the hydro-dynamics study.