Atmospheric CO_(2) Removal Efficiency through Enhanced Silicate Weathering in Croplands:A Review with Emphasis on the Contribution of Fungi  

作　　者：Zi-Bo Li Gaojun Li Jonathan M.Adams Dong-Xing Guan Liang Zhao Rongjun Bian Qing Hu Xiancai Lu Junfeng Ji Jun Chen 

机构地区：[1]State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China [2]Key Laboratory of Surficial Geochemistry,Ministry of Education,School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material Cycling,Nanjing University,Nanjing 210023,China [3]School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China [4]Institute of Soil and Water Resources and Environmental Science,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China [5]Institute of Resource,Ecosystem and Environment of Agriculture,Nanjing Agricultural University,Nanjing 210095,China [6]Xiong'an Institute of Innovation,Chinese Academy of Sciences,Xiong'an 071700,China

出　　处：《Journal of Earth Science》2025年第1期197-211,共15页地球科学学刊(英文版)

基　　金：funded by the National Natural Science Foundation of China(Nos.42173059 and 41991322)。

摘　　要：Enhanced silicate weathering(ESW)is a geoengineering method aimed at accelerating carbon dioxide(CO_(2))removal(CDR)from atmosphere by increasing the weathering flux of silicate rocks and minerals.It has emerged as a promising strategy for CDR.Theoretical studies underscore ESW’s substantial potential for CDR and its diverse benefits for crops when applied to croplands.However,the well-known significant discrepancies in silicate weathering rates between laboratory and field conditions introduce uncertainty in CDR through ESW.By compiling data from recent literature,we calculated and compared CDR efficiency(t CO_(2)t^(-1)_(silicate)ha^(-1)y^(-1))observed in mesocosm experiments and field trials.The findings indicate that CDR efficiencies in field trials are comparable to or exceeding that observed in mesocosm experiments by 1-3 orders of magnitude,particularly evident with wollastonite application.The hierarchy of CDR efficiency among silicates suitable for ESW is ranked as follows:olivine≥wollastonite>basalt>albite≥anorthite.We suggest the potential role of biota,especially fungi,in contributing to higher CDR efficiencies observed in field trials compared to mesocosm experiments.We further emphasize introducing fungi known for their effectiveness in silicate weathering could potentially enhance CDR efficiency through ESW in croplands.But before implementing fungal-facilitated ESW,three key questions need addressing:(i)How does the community of introduced fungi evolve over time?(ii)What is the long-term trajectory of CDR efficiency following fungal introduction?and(iii)Could fungal introduction lead to organic matter oxidation,resulting in elevated CO_(2)emissions?These investigations are crucial for optimizing the efficiency and sustainability of fungal-facilitated ESW strategy.

关 键 词：enhanced weathering carbon dioxide removal efficiency FUNGI weathering rate altered surface layers 

分 类 号：P512.1[天文地球—地质学]