GYIG OpenIR  > 环境地球化学国家重点实验室
Influence of the biological carbon pump effect on the sources and deposition of organic matter in Fuxian Lake, a deep oligotrophic lake in southwest China
Haibo He;  Zaihua Liu;  Chongying Chen;  Yu Wei;  Qian Bao;  Hailong Sun;  Yundi Hu;   Hao Yan
2019
发表期刊Acta Geochimica
卷号38页码:613–626
摘要

Biological carbon pumping (BCP) is a key process in which dissolved inorganic carbon in terrestrial aquatic ecosystems is utilized by aquatic autotrophs for photosynthesis and transformed into autochthonous organic matter (AOC). However, the mechanisms underlying BCP and the amount of generated AOC deposited effectively, are still poorly understood. Therefore, we conducted a systematic study combining modern hydrochemical monitoring and a sediment trap experiment in Fuxian Lake (Yunnan, SW China), the second-deepest plateau, oligotrophic freshwater lake in China. Temperature, pH, EC (electrical conductivity), DO (dissolved O2), [HCO3], [Ca2+], SIc, partial CO2 (pCO2) pressure, and carbon isotopic compositions of HCO3 (δ13CDIC) in water from Fuxian Lake all displayed distinct seasonal and vertical variations. This was especially apparent in an inverse correlation between pCO2 and DO, indicating that variations of hydrochemistry in the lake water were mainly controlled by the metabolism of the aquatic phototrophs. Furthermore, the lowest C/N ratios and highest δ13Corg were recorded in the trap sediments. Analyses of the C/N ratio demonstrated that the proportions of AOC ranged from 30% to 100% of all OC, indicating that AOC was an important contributor to sedimentary organic matter (OC). It was calculated that the AOC flux in Fuxian Lake was 20.43 t C km−2 in 2017. Therefore, AOC produced by carbonate weathering and aquatic photosynthesis could potentially be a significant carbon sink and may have an important contribution to solving the lack of carbon sinks in the global carbon cycle.

关键词Carbonate Weathering hydrochemical Variation biological Carbon Pump Effect sediment Trap autochthonous Organic Carbon Carbon Sink
收录类别EI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/10503
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.CAS Center for Excellence in Quaternary Science and Global Change, Guiyang 550081, China
推荐引用方式
GB/T 7714
Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan. Influence of the biological carbon pump effect on the sources and deposition of organic matter in Fuxian Lake, a deep oligotrophic lake in southwest China[J]. Acta Geochimica,2019,38:613–626.
APA Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan.(2019).Influence of the biological carbon pump effect on the sources and deposition of organic matter in Fuxian Lake, a deep oligotrophic lake in southwest China.Acta Geochimica,38,613–626.
MLA Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan."Influence of the biological carbon pump effect on the sources and deposition of organic matter in Fuxian Lake, a deep oligotrophic lake in southwest China".Acta Geochimica 38(2019):613–626.
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
Influence of the bio(2100KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan]的文章
百度学术
百度学术中相似的文章
[Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan]的文章
必应学术
必应学术中相似的文章
[Haibo He;Zaihua Liu;Chongying Chen;Yu Wei;Qian Bao;Hailong Sun;Yundi Hu; Hao Yan]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Influence of the biological carbon pump effect on the sources and deposition of organic matter in Fuxian Lake, a deep oligotrophic lake in southwest China.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

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。