Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073753 |
Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system | |
Maher, Damien T.1,2; Santos, Isaac R.1,2; Schulz, Kai G.3; Call, Mitchell1,2; Jacobsen, Geraldine E.4; Sanders, Christian J.1,2 | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Mangroves are among the most carbon-rich ecosystems on Earth and can sequester carbon in sediments over long timescales. Here we assess whether century-old buried carbon may be remineralized and exported by measuring Delta C-14 in the exported dissolved inorganic carbon (DIC) as well as sediment Delta C-14 profiles in a subtropical mangrove. Pore water exchange released isotopically depleted, old DIC to surface waters. Keeling plots revealed that the source of DIC to surface waters had a delta C-13-DIC value of -29.4 +/- 1.9% and Delta C-14-DIC value of -73 +/- 9%. The respired and exported carbon comes from an average depth of similar to 40 cm, equivalent to similar to 100 years of sediment accumulation. Therefore, century-old sequestered carbon is still susceptible to remineralization and tidal export to the coastal ocean via pore water exchange or submarine groundwater discharge. We suggest that the timescales over which blue carbon burial is assessed should consider carbon losses via pore water exchange. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900062 |
WOS关键词 | DELAYED COINCIDENCE COUNTER ; WATER EXCHANGE ; ORGANIC-MATTER ; POREWATER EXCHANGE ; SEDIMENT PROCESSES ; MARINE-SEDIMENTS ; TIDAL CREEK ; FORESTS ; ABUNDANCES ; RIVERINE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28687 |
专题 | 气候变化 |
作者单位 | 1.Southern Cross Univ, Sch Environm Sci & Engn, Lismore, NSW, Australia; 2.Southern Cross Univ, Natl Marine Sci Ctr, Coffs Harbour, NSW, Australia; 3.Southern Cross Univ, Ctr Coastal Biogeochem, Lismore, NSW, Australia; 4.Australian Nucl Sci & Technol Org, Lucas Heights, NSW, Australia |
推荐引用方式 GB/T 7714 | Maher, Damien T.,Santos, Isaac R.,Schulz, Kai G.,et al. Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Maher, Damien T.,Santos, Isaac R.,Schulz, Kai G.,Call, Mitchell,Jacobsen, Geraldine E.,&Sanders, Christian J..(2017).Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Maher, Damien T.,et al."Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
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