A Dual Soil Carbon Framework for Enhanced Silicate Rock Weathering : Integrating Organic and Inorganic Carbon Pathways Across Forest and Cropland Ecosystems
Ding, Yang (Nanjing University of Information Science and Technology. School of Ecology and Applied Meteorology)
Yan, Zhongao (Nanjing University of Information Science and Technology. Changwang School of Honors)
Wang, Hao (Nanjing University of Information Science and Technology. Changwang School of Honors)
Mao, Yifei (Nanjing University of Information Science and Technology. School of Ecology and Applied Meteorology)
Liu, Zeding (Nanjing University of Information Science and Technology. School of Ecology and Applied Meteorology)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Fang, Chao (Nanjing University of Information Science and Technology. School of Ecology and Applied Meteorology)
Feng, Zhaozhong (Nanjing University of Information Science and Technology. School of Ecology and Applied Meteorology)

Data:	2026
Resum:	Enhanced silicate rock weathering (ESRW) has been proposed as a promising carbon dioxide removal strategy, yet its carbon sequestration pathways, durability, and ecosystem dependence remain incompletely understood. Here, we synthesize evidence from field experiments, observational studies, and modeling to compare ESRW-induced carbon dynamics across forest and cropland ecosystems using a unified SOC-SIC dual-pool framework. Across both systems, ESRW operates through shared geochemical processes, including proton consumption during silicate dissolution and base cation release, which promote atmospheric CO uptake. However, carbon fate diverges markedly among ecosystems. Forest systems, characterized by high biomass production, deep rooting, and strong hydrological connectivity, primarily favor biologically mediated pathways, enhancing net primary productivity and mineral-associated organic carbon (MAOC) formation, while facilitating downstream export of dissolved inorganic carbon (DIC). In contrast, intensively managed croplands more readily accumulate measurable soil inorganic carbon (SIC) and soil DIC over short to medium timescales, particularly under evapotranspiration-dominated or calcium-rich conditions, although SOC responses are often moderate and variable. Importantly, only a subset of ESRW-driven pathways-such as MAOC formation and secondary carbonate precipitation-represent durable carbon storage on decadal to centennial timescales. By explicitly distinguishing carbon storage from carbon transport, this synthesis clarifies the conditions under which ESRW can contribute to climate change mitigation and highlights the need for ecosystem-specific deployment and monitoring strategies.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article de revisió ; recerca ; Versió publicada
Publicat a:	Forests, Vol. 17, Num. 1 (January 2026) , art. 144, ISSN 1999-4907

DOI: 10.3390/f17010144

16 p, 1.9 MB

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