Size, distribution, and vulnerability of the global soil inorganic carbon,Science

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Size, distribution, and vulnerability of the global soil inorganic carbon
Science ( IF 56.9 ) Pub Date : 2024-04-11 , DOI: 10.1126/science.adi7918
Yuanyuan Huang _{1,

2} , Xiaodong Song ₃ , Ying-Ping Wang ₄ , Josep G. Canadell ₅ , Yiqi Luo ₆ , Philippe Ciais ₇ , Anping Chen ₈ , Songbai Hong ₉ , Yugang Wang ₁₀ , Feng Tao ₁₁ , Wei Li ₁₂ , Yiming Xu ₁₃ , Reza Mirzaeitalarposhti ₁₄ , Heba Elbasiouny ₁₅ , Igor Savin _{16,

17} , Dmitry Shchepashchenko _{18,

19,

20} , Raphael A. Viscarra Rossel ₂₁ , Daniel S. Goll ₇ , Jinfeng Chang _{18,

22} , Benjamin Z. Houlton ₁₁ , Huayong Wu ₃ , Fei Yang ₃ , Xiaoming Feng ₂₃ , Yongzhe Chen ₂₄ , Yu Liu ₁ , Shuli Niu ₁ , Gan-Lin Zhang _{3,

25,

26}

Affiliation

Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
CSIRO Environment, Private Bag 10, Clayton South VIC 3169, Australia.
CSIRO Environment, Black Mountain, ACT 2601, Australia.
Soil and Crop Sciences Section, School of Integrative Plant Science, Cornell University, Ithaca NY 14853, USA.
Laboratoire des Sciences du Climat et de l’Environnement, CEA/CNRS/UVSQ/Université Paris Saclay, Gif-sur-Yvette 91990, France.
Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523, USA.
School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China.
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China.
Department of Ecology and Evolutionary Biology and Department of Global Development, Cornell University, Ithaca, New York 14853, USA.
Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modelling, Institute for Global Change Studies, Tsinghua University, Beijing 100084, China.
School of Grassland Science, Beijing Forestry University, Beijing 100083, China.
Institute of Crop Science (340i), University of Hohenheim, Fruwirthstraße 20, 70599 Stuttgart, Germany.
Agriculture Faculty (Girls), Al-Azhar University, Cairo 11651, Egypt.
V.V. Dokuchaev Soil Science Institute, Moscow 119017, Russia.
Institute of Environmental Engineering of RUDN University, Moscow 117198, Russia.
International Institute for Applied Systems Analysis (IIASA) Schlossplatz 1, 2361 Laxenburg, Austria.
Center for Forest Ecology and Productivity of the Russian Academy of Sciences, Moscow 117997, Russia.
Institute of Ecology and Geography, Siberian Federal University, 79 Svobodny Prospect, 660041 Krasnoyarsk, Russia.
Soil and Landscape Science School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, GPO Box U1987, Perth WA 6845, Australia.
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Department of Geography, The University of Hong Kong, Hong Kong 999077, China.
College of Advanced Agronomy, University of Chinese Academy of Sciences, Beijing 100049, China.
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.

Global estimates of the size, distribution, and vulnerability of soil inorganic carbon (SIC) remain largely unquantified. By compiling 223,593 field-based measurements and developing machine-learning models, we report that global soils store 2305 ± 636 (±1 SD) billion tonnes of carbon as SIC over the top 2-meter depth. Under future scenarios, soil acidification associated with nitrogen additions to terrestrial ecosystems will reduce global SIC (0.3 meters) up to 23 billion tonnes of carbon over the next 30 years, with India and China being the most affected. Our synthesis of present-day land-water carbon inventories and inland-water carbonate chemistry reveals that at least 1.13 ± 0.33 billion tonnes of inorganic carbon is lost to inland-waters through soils annually, resulting in large but overlooked impacts on atmospheric and hydrospheric carbon dynamics.

更新日期：2024-04-11

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