Interannual variation of rare earth element abundances in corals from northern coast of the South China Sea and its relation with sea-level change and human activities
Liu,Y (Liu, Yi)[1,2]; Peng,ZC (Peng, Zicheng)[1]; Wei,GJ (Wei, Gangjian)[3]; Chen,TG (Chen, Tegu)[4]; Sun,WD (Sun, Weidong)[3]; He,JF (He, Jianfeng)[1]; Liu,GJ (Liu, Guijian)[1]; Chou,CL (Chou, Chen-Lin)[5]; Shen,CC (Shen, Chuan-Chou)[6]
2011-02-28
发表期刊MARINE ENVIRONMENTAL RESEARCH
卷号71期号:1页码:62-69
文章类型期刊论文
摘要

Here we present interannual rare earth element (REE) records spanning the last two decades of the 20th century in two living Porites corals, collected from Longwan Bay, close to the estuarine zones off Wanquan River of Hainan Island and Hong Kong off the Pearl River Delta of Guangdong Province in the northern South China Sea. The results show that both coral REE contents (0.5-40 ng g(-1) in Longwan Bay and 2-250 ng g(-1) in Hong Kong for La-Lu) are characterized with a declining trend, which are significantly negative correlated with regional sea-level rise (9.4 mm a(-1) from 1981 to 1996 in Longwan Bay, 13.7 mm a(-1) from 1991 to 2001 in Hong Kong). The REE features are proposed to be resulted from seawater intrusion into the estuaries in response to contemporary sea-level rise. However, the tendency for the coral Er/Nd time series at Hong Kong site is absent and there is no significant relation between Er/Nd and total REEs as found for the coral at Longwan Bay site. The observations are likely attributed to changes of the water discharge and sediment load of Pearl River, which have been significantly affected by intense human activities, such as the construction of dams/reservoirs and riverbed sediment mining, in past decades. The riverine sediment load/discharge ratio of the Pearl River decreased sharply with a rate of 0.02 kg m(-3) a(-1), which could make significant contribution to the declining trend of coral REE. We propose that coastal corals in Longwan Bay and similar unexplored sites with little influences of river discharge and anthropogenic disruption are ideal candidates to investigate the influence of sea-level change on seawater/coral REE.

关键词Coral REE Sea level Sediment load Estuary South China sea
DOI10.1016/j.marenvres.2010.10.003
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10307
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Peng,ZC (Peng, Zicheng)[1]
作者单位1.CAS Key Laboratory of Crust-Mantle Material and Environment, School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
4.South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
5.Illinois State Geological Survey (emeritus), 615 East Peabody Drive, Champaign, IL 61820, USA;
6.High-precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei, Taiwan, ROC
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Liu,Y ,Peng,ZC ,Wei,GJ ,et al. Interannual variation of rare earth element abundances in corals from northern coast of the South China Sea and its relation with sea-level change and human activities[J]. MARINE ENVIRONMENTAL RESEARCH,2011,71(1):62-69.
APA Liu,Y .,Peng,ZC .,Wei,GJ .,Chen,TG .,Sun,WD .,...&Shen,CC .(2011).Interannual variation of rare earth element abundances in corals from northern coast of the South China Sea and its relation with sea-level change and human activities.MARINE ENVIRONMENTAL RESEARCH,71(1),62-69.
MLA Liu,Y ,et al."Interannual variation of rare earth element abundances in corals from northern coast of the South China Sea and its relation with sea-level change and human activities".MARINE ENVIRONMENTAL RESEARCH 71.1(2011):62-69.
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