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Sustainability of soil organic carbon in consolidated gully land in China's Loess Plateau
Yan, Qina1,7; Kumar, Praveen1,2; Wang, Yunqiang3,4; Zhao, Yali3,4; Lin, Henry5; Ran, Qihua6; An, Zhisheng3,4; Zhou, Weijian3,4
通讯作者Kumar, Praveen(kumar1@illinois.edu)
2020-10-09
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号10期号:1页码:12
摘要Massive gully land consolidation projects, launched in China's Loess Plateau, aim to restore 2667 km(2) agricultural lands in total by consolidating 2026 highly eroded gullies. This effort represents a social engineering project where the economic development and livelihood of the farming families are closely tied to the ability of these emergent landscapes to provide agricultural services. Whether these 'time zero' landscapes have the resilience to provide a sustainable soil condition such as soil organic carbon (SOC) content remains unknown. By studying two watersheds, one of which is a control site, we show that the consolidated gully serves as an enhanced carbon sink, where the magnitude of SOC increase rate (1.0 g C/ m(2)/ year) is about twice that of the SOC decrease rate (- 0.5 g C/ m(2)/ year) in the surrounding natural watershed. Over a 50-year co-evolution of landscape and SOC turnover, we find that the dominant mechanisms that determine the carbon cycling are different between the consolidated gully and natural watersheds. In natural watersheds, the flux of SOC transformation is mainly driven by the flux of SOC transport; but in the consolidated gully, the transport has little impact on the transformation. Furthermore, we find that extending the surface carbon residence time has the potential to efficiently enhance carbon sequestration from the atmosphere with a rate as high as 8 g C/ m(2)/ year compared to the current 0.4 g C/ m(2)/ year. The success for the completion of all gully consolidation would lead to as high as 26.67 Gg C/ year sequestrated into soils. This work, therefore, not only provides an assessment and guidance of the long-term sustainability of the 'time zero' landscapes but also a solution for sequestration CO2 into soils.
DOI10.1038/s41598-020-73910-7
收录类别SCI ; SCI
语种英语
资助项目National Science Foundation[EAR 1331906] ; National Science Foundation[EAR 1748573] ; National Science Foundation[CBET 1290445] ; National Science Foundation[ACI 1261582] ; Shanxi Science and Technology Coordination and Innovation Project[2015 KTZDNY01-04]
WOS研究方向Science & Technology - Other Topics
项目资助者National Science Foundation ; Shanxi Science and Technology Coordination and Innovation Project
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000615374200002
出版者NATURE RESEARCH
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/15907
专题生态环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Kumar, Praveen
作者单位1.Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61820 USA
2.Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
4.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China
5.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA USA
6.Zhejiang Univ, Coll Civil Engn & Architecture, Inst Hydrol & Water Resources, Hangzhou, Peoples R China
7.Lawrence Berkeley Natl Lab, Berkeley, CA USA
推荐引用方式
GB/T 7714
Yan, Qina,Kumar, Praveen,Wang, Yunqiang,et al. Sustainability of soil organic carbon in consolidated gully land in China's Loess Plateau[J]. SCIENTIFIC REPORTS,2020,10(1):12.
APA Yan, Qina.,Kumar, Praveen.,Wang, Yunqiang.,Zhao, Yali.,Lin, Henry.,...&Zhou, Weijian.(2020).Sustainability of soil organic carbon in consolidated gully land in China's Loess Plateau.SCIENTIFIC REPORTS,10(1),12.
MLA Yan, Qina,et al."Sustainability of soil organic carbon in consolidated gully land in China's Loess Plateau".SCIENTIFIC REPORTS 10.1(2020):12.
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