Wollastonite addition stimulates soil organic carbon mineralization: Evidences from 12 land-use types in subtropical China

•Effect of wollastonite addition on SOC mineralization is evaluated.•Wollastonite addition increases SOC mineralization.•Greater wollastonite effect occurs on soils with lower pH values.•Soil trait change account for SOC mineralization response to wollastonite addition. Enhanced rock weathering thro...

Full description

Saved in:
Bibliographic Details
Published in:Catena (Giessen) 2023-05, Vol.225, p.107031, Article 107031
Main Authors: Yan, Yongxue, Dong, Xiaohan, Li, Renshan, Zhang, Yankuan, Yan, Shaokui, Guan, Xin, Yang, Qingpeng, Chen, Longchi, Fang, Yunting, Zhang, Weidong, Wang, Silong
Format: Article
Language:English
Subjects:
Enhanced rock weathering
Silicate rock powder
Soil CO2 emissions
Soil organic carbon
Soil properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Effect of wollastonite addition on SOC mineralization is evaluated.•Wollastonite addition increases SOC mineralization.•Greater wollastonite effect occurs on soils with lower pH values.•Soil trait change account for SOC mineralization response to wollastonite addition. Enhanced rock weathering through adding silicate rock powder to soil has been increasingly considered as an effective means of removing CO2 from the atmosphere. However, the potential impact of silicate rock powder addition on the stability of soil organic carbon remains largely unknown, which adds an uncertainty to its effectiveness in mitigating atmospheric CO2. In this study, the response of soil CO2 efflux to wollastonite addition was evaluated for 12 land-use types in a subtropical region of China through an incubation experiment. Results showed that wollastonite addition significantly (P 
ISSN:0341-8162
1872-6887
DOI:10.1016/j.catena.2023.107031