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Climate and litter C/N ratio constrain soil organic carbon accumulation
Zhou, Guoyi1; Xu, Shan; Ciais, Philippe2; Manzoni, Stefano3,4; Fang, Jingyun5; Yu, Guirui6; Tang, Xuli; Zhou, Ping7; Wang, Wantong8; Yan, Junhua; Wang, Gengxu9; Ma, Keping5; Li, Shenggong6; Du, Sheng10; Han, Shijie11; Ma, Youxin12; Zhang, Deqiang; Liu, Juxiu; Liu, Shizhong; Chu, Guowei; Zhang, Qianmei; Li, Yuelin; Huang, Wenjuan; Ren, Hai; Lu, Xiankai; Chen, Xiuzhi
AbstractSoil organic carbon (SOC) plays critical roles in stabilizing atmospheric CO2 concentration, but the mechanistic controls on the amount and distribution of SOC on global scales are not well understood. In turn, this has hampered the ability to model global C budgets and to find measures to mitigate climate change. Here, based on the data from a large field survey campaign with 2600 plots across China's forest ecosystems and a global collection of published data from forested land, we find that a low litter carbon-to-nitrogen ratio (C/N) and high wetness index (P/PET, precipitation-to-potential-evapotranspiration ratio) are the two factors that promote SOC accumulation, with only minor contributions of litter quantity and soil texture. The field survey data demonstrated that high plant diversity decreased litter C/N and thus indirectly promoted SOC accumulation by increasing the litter quality. We conclude that any changes in plant-community composition, plant-species richness and environmental factors that can reduce the litter C/N ratio, or climatic changes that increase wetness index, may promote SOC accumulation. The study provides a guideline for modeling the carbon cycle of various ecosystem scales and formulates the principle for land-based actions for mitigating the rising atmospheric CO2 concentration.
Keywordlitter carbon-to-nitrogen wetness index annual litterfall soil texture soil organic carbon
Subject AreaMultidisciplinary Sciences
Indexed BySCI
WOS Research AreaScience & Technology - Other Topics
WOS IDWOS:000489296400023
Publication PlaceOXFORD
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDA05050000] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [NSFC41430529] ; CAS Distinguished Research Fellow Program ; Swedish Research Council, FormasSwedish Research CouncilSwedish Research Council Formas [2015-468] ; Swedish Research Council, VRSwedish Research Council [2016-04146]
Corresponding Author Emailgyzhou@scib.ac.cn
OAGreen Published
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Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, South China Inst Bot, Guangzhou 510650, Guangdong, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Inst Ecol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China
3.UPSaclay, UVSQ, CEA, CNRS,Inst Pierre Simon Laplace,Lab Sci Climat & E, F-91191 Gif Sur Yvette, France
4.Stockholm Univ, Dept Phys Geog, SE-10691 Stockholm, Sweden
5.Bolin Ctr Climate Res, SE-10691 Stockholm, Sweden
6.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
8.Guangdong Acad Sci, Guangzhou Inst Geog, Guangzhou 510070, Guangdong, Peoples R China
9.Henan Normal Univ, Coll Tourism, Xinxiang 453007, Henan, Peoples R China
10.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
11.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
12.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China
13.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Guoyi,Xu, Shan,Ciais, Philippe,et al. Climate and litter C/N ratio constrain soil organic carbon accumulation[J]. NATIONAL SCIENCE REVIEW,2019,6(4):746-757.
APA Zhou, Guoyi.,Xu, Shan.,Ciais, Philippe.,Manzoni, Stefano.,Fang, Jingyun.,...&Chen, Xiuzhi.(2019).Climate and litter C/N ratio constrain soil organic carbon accumulation.NATIONAL SCIENCE REVIEW,6(4),746-757.
MLA Zhou, Guoyi,et al."Climate and litter C/N ratio constrain soil organic carbon accumulation".NATIONAL SCIENCE REVIEW 6.4(2019):746-757.
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