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Climate and litter C/N ratio constrain soil organic carbon accumulation
Zhou Guoyi1,2; Xu Shan1; Ciais Philippe3; Manzoni Stefano4,5; Fang Jingyun6; Yu Guirui7; Tang Xuli1; Zhou Ping8; Wang Wantong9; Yan Junhua1; Wang Gengxu10; Ma Keping6; Li Shenggong7; Du Sheng11; Han Shijie12; Ma Youxin13; Zhang Deqiang1; Liu Juxiu1; Liu Shizhong1; Chu Guowei1; Zhang Qianmei1; Li Yuelin1; Huang Wenjuan1; Ren Hai1; Lu Xiankai1; Chen Xiuzhi1
Corresponding AuthorZhou, Guoyi(
Source PublicationNational Science Review
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. © 2019 Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. 2019.
Keywordlitter carbon-to-nitrogen wetness index annual litterfall soil texture soil organic carbon
Indexed BySCI ; EI
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDA05050000] ; National Natural Science Foundation of China[NSFC41430529] ; CAS Distinguished Research Fellow Program ; Swedish Research Council, Formas[2015-468] ; Swedish Research Council, VR[2016-04146]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000489296400023
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; CAS Distinguished Research Fellow Program ; Swedish Research Council, Formas ; Swedish Research Council, VR
EI Accession NumberAccession number:20194007489294
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhou Guoyi
Affiliation1.South China Institute of Botany, Chinese Academy of Sciences, Guangzhou, 510650, China;
2.Institute of Ecology, Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China;
3.Institut Pierre Simon Laplace, Laboratoire des Sciences du Climat et de l'Environnement, CEA CNRS UVSQ UPSaclay, Gif sur Yvette; 91191, France;
4.Department of Physical Geography, Stockholm University, Stockholm, SE-10691, Sweden;
5.Bolin Centre for Climate Research, Stockholm, SE-10691, Sweden;
6.Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China;
7.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing; 100101, China;
8.Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou, 510070, China;
9.College of Tourism, Henan Normal University, Xinxiang;453007, China;
10.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China;
11.Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, 712100, China;
12.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China;
13.Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla;666303, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
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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