Modern carbon burial in Lake Qinghai, China | |
Xu, H (Xu, Hai)[ 1 ]; Lan, JH (Lan, Jianghu)[ 1,2 ]; Liu, B (Liu, Bin)[ 1,2 ]; Sheng, EG (Sheng, Enguo)[ 1,2 ]; Yeager, KM (Yeager, Kevin M.)[ 3 ] | |
2013-12-30 | |
发表期刊 | APPLIED GEOCHEMISTRY |
卷号 | 39页码:150-155 |
文章类型 | 期刊论文 |
摘要 | The quantification of carbon burial in lake sediments, and carbon fluxes derived from different origins are crucial to understand modern lacustrine carbon budgets, and to assess the role of lakes in the global carbon cycle. In this study, we estimated carbon burial in the sediment of Lake Qinghai, the largest inland lake in China, and the carbon fluxes derived from different origins. We find that: (1) The organic carbon burial rate in lake sediment is approximately 7.23 g m (2) a (1), which is comparable to rates documented in many large lakes worldwide. We determined that the flux of riverine particulate organic carbon (POC) is approximately 10 times higher than that of dissolved organic carbon (DOC). Organic matter in lake sediments is primarily derived from POC in lake water, of which approximately 80% is of terrestrial origin. (2) The inorganic carbon burial rate in lake sediment is slightly higher than that of organic carbon. The flux of riverine dissolved inorganic carbon (DIC) is approximately 20 times that of DOC, and more than 70% of the riverine DIC is drawn directly and/or indirectly from atmospheric CO2. (3) Both DIC and DOC are concentrated in lake water, suggesting that the lake serves as a sink for both organic and inorganic carbon over long term timescales. (4) Our analysis suggests that the carbon burial rates in Lake Qinghai would be much higher in warmer climatic periods than in cold ones, implying a growing role in the global carbon cycle under a continued global warming scenario. |
DOI | 10.1016/j.apgeochem.2013.04.004 |
收录类别 | SCI ; EI |
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/361006/10027 |
专题 | 现代环境研究室 |
通讯作者 | Xu, H (Xu, Hai)[ 1 ] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China; 2.Graduate University of Chinese Academy of Sciences, Beijing, China; 3.Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY, USA |
推荐引用方式 GB/T 7714 | Xu, H ,Lan, JH ,Liu, B ,et al. Modern carbon burial in Lake Qinghai, China[J]. APPLIED GEOCHEMISTRY,2013,39:150-155. |
APA | Xu, H ,Lan, JH ,Liu, B ,Sheng, EG ,&Yeager, KM .(2013).Modern carbon burial in Lake Qinghai, China.APPLIED GEOCHEMISTRY,39,150-155. |
MLA | Xu, H ,et al."Modern carbon burial in Lake Qinghai, China".APPLIED GEOCHEMISTRY 39(2013):150-155. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Modern carbon burial(1070KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论