Ke Zhixin, Tan Yehui, Huang Liangmin, Zhao Chunyu, Jiang Xin
Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, PR China; Guangdong Provincial Key Laboratory of Applied Marine Biology, West Xin'gang Road 164(#), Guangzhou 510301, PR China.
Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, PR China.
Mar Pollut Bull. 2017 Jan 15;114(1):183-191. doi: 10.1016/j.marpolbul.2016.08.078. Epub 2016 Aug 31.
Stable isotopic signatures (δC and δN) and C/N ratios of suspended particulate organic matter (POM) were investigated from the surface water of Daya Bay during summer and winter of 2015. The relatively high δC values suggested the input of C-depleted terrigenous organic matter was low in Daya Bay. There were significant correlations between δC values and chlorophyll a concentrations both during summer and winter, suggesting the δC values were mainly controlled by the phytoplankton biomass in the surface water. The distribution of δN values was more complicated than that of δC and displayed low values in the outer bay and the Dan'ao River estuary. N-depleted ammonia originating from industrial wastewater might have strongly influenced the water quality and stable isotopic signatures of POM near the Dan'ao River estuary. The δC and δN values strongly reflect the influences of anthropogenic activity and eutrophication in Daya Bay.
2015年夏季和冬季对大亚湾表层水中悬浮颗粒有机物（POM）的稳定同位素特征（δC和δN）以及C/N比进行了研究。相对较高的δC值表明大亚湾贫碳陆源有机物的输入量较低。夏季和冬季δC值与叶绿素a浓度之间均存在显著相关性，这表明δC值主要受表层水中浮游植物生物量的控制。δN值的分布比δC值更为复杂，在外湾和淡澳河河口呈现低值。源自工业废水的贫氮氨可能对淡澳河河口附近的水质和POM的稳定同位素特征产生了强烈影响。δC和δN值有力地反映了大亚湾人为活动和富营养化的影响。
