Size, distribution, and vulnerability of the global soil inorganic carbon - Archive ouverte HAL Access content directly
Journal Articles Science Year : 2024

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

Ying-Ping Wang
  • Function : Author
Josep Canadell
  • Function : Author
Anping Chen
  • Function : Author
Songbai Hong
  • Function : Author
Yugang Wang
  • Function : Author
Feng Tao
  • Function : Author
Wei Li
  • Function : Author
Yiming Xu
  • Function : Author
Reza Mirzaeitalarposhti
  • Function : Author
Heba Elbasiouny
  • Function : Author
Igor Savin
  • Function : Author
Dmitry Shchepashchenko
  • Function : Author
Raphael Rossel
  • Function : Author
Daniel Goll
  • Function : Author
Jinfeng Chang
  • Function : Author
Benjamin Houlton
  • Function : Author
Huayong Wu
  • Function : Author
Fei Yang
  • Function : Author
Xiaoming Feng
  • Function : Author
Yongzhe Chen
  • Function : Author
Yu Liu
  • Function : Author
Shuli Niu
  • Function : Author
Gan-Lin Zhang
  • Function : Author

Abstract

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.
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Dates and versions

hal-04548370 , version 1 (16-04-2024)

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Yuanyuan Huang, Xiaodong Song, Ying-Ping Wang, Josep Canadell, Yiqi Luo, et al.. Size, distribution, and vulnerability of the global soil inorganic carbon. Science, 2024, 384 (6692), pp.233-239. ⟨10.1126/science.adi7918⟩. ⟨hal-04548370⟩
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