Biochar improves soil organic carbon stability by shaping the microbial community structures at different soil depths four years after an incorporation in a farmland soil

Ruiling Ma; Xiulan Wu; Zhiwei Liu; Qi Yi; Man Xu; Jufeng Zheng; Rongjun Bian; Xuhui Zhang; Genxing Pan

Current Research in Environmental Sustainability (Jan 2023)

Biochar improves soil organic carbon stability by shaping the microbial community structures at different soil depths four years after an incorporation in a farmland soil

Ruiling Ma,
Xiulan Wu,
Zhiwei Liu,
Qi Yi,
Man Xu,
Jufeng Zheng,
Rongjun Bian,
Xuhui Zhang,
Genxing Pan

Affiliations

Ruiling Ma: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Xiulan Wu: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Zhiwei Liu: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Qi Yi: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Man Xu: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Jufeng Zheng: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China; Corresponding author at: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China.
Rongjun Bian: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Xuhui Zhang: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China
Genxing Pan: Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, China

Journal volume & issue: Vol. 5
p. 100214

Abstract

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Soil organic carbon (SOC), mineralization and microbial community structures were investigated at different depths of farmland soils 4 years after a single biochar amendment. Biochar increased SOC at 0-20cm (10.7%) and 20-40cm (24.9%). Mineralization decreased with depth and further decreased 12.3% (0-20cm), 8.5% (20-40cm) and 30.5% (40-60cm) with biochar amendment. Subsoils selected for oligotrophs (e.g., Chloroflexi, Acidobacteria) associated with lower mineralization rates and limited copiotrophs (e.g., Proteobacteria, Ascomycota) which exhibit higher respiration rates. Biochar enhanced oligotrophs in topsoil and restricted copiotrophs at all depths. This demonstrates how biochar increases SOC stability by changing microbial community structures at different depths.

Published in Current Research in Environmental Sustainability

ISSN: 2666-0490 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Geography. Anthropology. Recreation: Environmental sciences; Technology: Environmental technology. Sanitary engineering: Environmental protection
Website: https://www.journals.elsevier.com/current-research-in-environmental-sustainability

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