Is the climate change mitigation effect of enhanced silicate weathering governed by biological processes?
Vicca, Sara (University of Antwerp. Department of Biology)
Goll, Daniel (Université Paris Saclay. Laboratoire des Sciences du Climat et de l'Environnement)
Hagens, Mathilde (Wageningen University & Research)
Hartmann, Jens (University of Hamburg. Institute for Geology)
Janssens, Ivan (University of Antwerp. Research Group Plants and Ecosystems)
Neubeck, Anna (Uppsala University. Department of Earth sciences)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Poblador, Sílvia (University of Antwerp. Research Group Plants and Ecosystems)
Rijnders, Jet (University of Antwerp. Research Group Plants and Ecosystems)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Struyf, Eric (University of Antwerp. Research Group Plants and Ecosystems)
Swoboda, Philipp (Bonn-Rhein-Sieg University of Applied Sciences. International Centre for Sustainable Development)
van Groenigen, Jan Willem (Wageningen University and Research. Soil Biology Group)
Vienne, Arthur (University of Antwerp. Research Group Plants and Ecosystems)
Verbruggen, Erik (University of Antwerp. Research Group Plants and Ecosystems)

Data:	2022
Resum:	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.
Ajuts:	European Commission 964545 Ministerio de Economía y Competitividad CGL2016-79835-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005
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Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Carbon sequestration ; Greenhouse gas emissions ; Enhanced weathering ; Negative emissions ; Soil biota
Publicat a:	Global change biology, Vol. 28, issue 3 (Feb. 2022) , p. 711-726, ISSN 1365-2486

DOI: 10.1111/gcb.15993

Postprint 24 p, 1022.3 KB

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