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Is the climate change mitigation effect of enhanced silicate weathering governed by biological processes?
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- Vicca, Sara (author)
- Univ Antwerp, Biol Dept, Plants & Ecosyst PLECO, Univ Pl 1, B-2610 Antwerp, Belgium
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- Goll, Daniel S. (author)
- Univ Paris Saclay, LSCE IPSL, CEA CNRS UVSQ, Gif Sur Yvette, France
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- Hagens, Mathilde (author)
- Wageningen Univ & Res, Environm Sci, Soil Chem & Chem Soil Qual, Wageningen, Netherlands
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- (creator_code:org_t)
- 2021-11-19
- 2022
- English.
- In: Global Change Biology. - : John Wiley & Sons. - 1354-1013 .- 1365-2486. ; 28:3, s. 711-726
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A number of negative emission technologies (NETs) have been proposed to actively remove CO2 from the atmosphere, with enhanced silicate weathering (ESW) as a relatively new NET with considerable climate change mitigation potential. Models calibrated to ESW rates in lab experiments estimate the global potential for inorganic carbon sequestration by ESW at about 0.5-5 Gt CO2 year(-1), suggesting ESW could be an important component of the future NETs mix. In real soils, however, weathering rates may differ strongly from lab conditions. Research on natural weathering has shown that biota such as plants, microbes, and macro-invertebrates can strongly affect weathering rates, but biotic effects were excluded from most ESW lab assessments. Moreover, ESW may alter soil organic carbon sequestration and greenhouse gas emissions by influencing physicochemical and biological processes, which holds the potential to perpetuate even larger negative emissions. Here, we argue that it is likely that the climate change mitigation effect of ESW will be governed by biological processes, emphasizing the need to put these processes on the agenda of this emerging research field.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- carbon sequestration
- enhanced weathering
- greenhouse gas emissions
- negative emissions
- soil biota
Publication and Content Type
- ref (subject category)
- art (subject category)
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