Earthquake-triggered increase in biospheric carbon export from a mountain belt

doi:10.1130/G37533.1

	Earthquake-triggered increase in biospheric carbon export from a mountain belt
	Jin, Zhangdong 1,6; West, A. Joshua 2; Xu, Xiaomei 4; Grocke, Darren R.5; Densmore, Alexander L.3; Li, Gen 2; Zhang, Fei 1; Hilton, Robert G.8; Wang, Jin 1,7,8
刊名	GEOLOGY
	2016-06-01
卷号	44 期号:6 页码:471-474
DOI	10.1130/G37533.1
文献子类	Article
英文摘要	On geological time scales, the erosion of carbon from the terrestrial biosphere and its burial in sediments can counter CO2 emissions from the solid Earth. Earthquakes may increase the erosion of this biospheric carbon and supply it to mountain rivers by triggering landslides, which rapidly strip hillslopes of vegetation and soil. Over the long term, elevated river sediment loads may promote more efficient carbon burial. However, riverine export of earthquake-mobilized carbon has remained poorly constrained. Here we quantify biospheric carbon discharge by the Zagunao River following a large earthquake with a unique set of samples collected before and after the A.D. 2008 M-w 7.9 Wenchuan (China) earthquake. Radioactive and stable carbon isotopes are used to isolate the biospheric carbon, accounting for rock-derived organic carbon inputs. River discharge of biospheric carbon doubled in the downstream reaches, characterized by moderate landslide impact, following the earthquake. The rapid export of carbon from earthquake-triggered landslides appears to outpace its degradation on hillslopes while sediment loads are elevated. This means that enhanced river discharge of biospheric carbon following large earthquakes can link active tectonics to CO2 drawdown.
WOS关键词	TERRESTRIAL ORGANIC-CARBON ; WENCHUAN EARTHQUAKE ; EROSION ; LANDSLIDES ; BURIAL ; SEDIMENT ; RESPIRATION ; CONSTRAINTS ; DYNAMICS ; MATTER
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000378203600020
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5726]
专题	地球环境研究所_加速器质谱中心
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA 3.Univ Durham, Inst Hazard Risk & Resilience, Durham DH1 3LE, England 4.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA 5.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England 6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 8.Univ Durham, Dept Geog, Durham DH1 3LE, England
推荐引用方式 GB/T 7714	Jin, Zhangdong,West, A. Joshua,Xu, Xiaomei,et al. Earthquake-triggered increase in biospheric carbon export from a mountain belt[J]. GEOLOGY,2016,44(6):471-474.
APA	Jin, Zhangdong.,West, A. Joshua.,Xu, Xiaomei.,Grocke, Darren R..,Densmore, Alexander L..,...&Wang, Jin.(2016).Earthquake-triggered increase in biospheric carbon export from a mountain belt.GEOLOGY,44(6),471-474.
MLA	Jin, Zhangdong,et al."Earthquake-triggered increase in biospheric carbon export from a mountain belt".GEOLOGY 44.6(2016):471-474.