Distribution and sources of organic carbon, nitrogen and their isotopes in surface sediments from the largest mariculture zone of the eastern Guangdong coast, South China
文献类型: 外文期刊
作者: Gu, Yang-Guang 1 ; Ouyang, Jun 2 ; Ning, Jia-Jia 1 ; Wang, Zeng-Huan 1 ;
作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
2.Key Lab Fishery Ecol & Environm, Guangzhou 510300, Guangdong, Peoples R China
3.Minist Agr, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Guangdong, Peoples R China
关键词: Sediment;Organic matter;Stable isotopes;Zhelin Bay;South China Sea
期刊名称:MARINE POLLUTION BULLETIN ( 影响因子:5.553; 五年影响因子:5.907 )
ISSN: 0025-326X
年卷期: 2017 年 120 卷 1-2 期
页码:
收录情况: SCI
摘要: China is the world's largest mariculture producer. However, there is limited detailed information on organic matter distribution generated by mariculture in China. This study assessed the total organic carbon (TOC), total nitrogen (TN), and isotopic composition (delta C-13 and delta N-15) in surface sediments from Zhelin Bay in South China. TOC, TN, delta C-13 and delta N-15 ranged from 0.46-1.23%, 0.08-0.20%, -22.07 to -21.13%o and 5.28-7.14%o, respectively, and followed similar spatial patterns. The C/N ratio coupled with isotopic composition (delta C-13 and delta N-15), indicates that the TOC originated from both terrestrial and marine sources. In general, surface sediments of Zhelin Bay were dominated by marine derived organic carbon; this form of carbon was separately calculated based on delta C-13-based two end-member mixing and C/N ratio models.
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