文献类型：期刊文献

英文题名：Carbon and nitrogen isotopic compositions of particulate organic matter in the upwelling zone off the east coast of Hainan Island, China

作者：Lu, Xuan[1,2];Huang, Chao[2];Chen, Fajin[2];Zhang, Shuwen[1];Lao, Qibin[3];Chen, Chunqing[2];Wu, Junhui[2];Jin, Guangzhe[2];Zhu, Qingmei[2]

机构：[1]Shantou Univ, Inst Marine Sci, Shantou 515063, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[3]State Ocean Adm, Marine Environm Monitoring Ctr Beihai, Beihai 266031, Peoples R China

年份：2021

卷号：167

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000656474000009)、、EI(收录号：20211610219721)、Scopus(收录号：2-s2.0-85104069711)、WOS

基金：We would like to thank professors Jie Xu and Zhen Shi for their support in collecting water samples. This work was supported by Scientific Research StartUp Foundation of Shantou University (NTF20006) , Guangdong Natural Science Foundation of China (2016A030312004) , National Natural Science Foundation of China (U1901213, 40876005, 41676008) , Project of Enhancing School with Innovation of Guangdong Ocean University (GDOU2016050260, 230419097) , and the program for scientific research startup funds of Guangdong Ocean University (R19007) .

语种：英文

外文关键词：Particulate organic matter; Stable isotope; Isotope ratio; Eastern Hainan Island; Upwelling

外文摘要：The isotopic compositions (613C and 615N) and C/N ratios of suspended particulate organic matter (POM) were investigated off the east coast of Hainan Island in the South China Sea during summer. Coastal upwelling influenced the nearshore stations of transects S2 and S3, and higher 613C and 615N values suggested that coastal upwelling played a significant role in determining the POM sources. The POM at the nearshore area of transect S1 was controlled by the coastal current and freshwater discharge. Additionally, organic matter may be transported to the offshore area via tidal movements in transects S1 and S3. Based on the stable isotope analysis in an R model, the marine organic matter contribution in the upwelling area (19%) was higher than that in the other areas (transect S1 and the offshore area) (7%). The 613C and 615N values and C/N ratios reflect the carbon and nitrogen sources and their cycling in the upwelling zone off the east coast of Hainan Island.