Biochar improves soil organic carbon sequestration potential in the topsoil and subsoil of a paddy field

Kaiyue Song; Shuo Jiang; Zhiwei Liu; Ying Cai; Wei Liu; Rongjun Bian; Xuhui Zhang; Jufeng Zheng; Lianqing Li

Current Research in Environmental Sustainability (Jan 2024)

Biochar improves soil organic carbon sequestration potential in the topsoil and subsoil of a paddy field

Kaiyue Song,
Shuo Jiang,
Zhiwei Liu,
Ying Cai,
Wei Liu,
Rongjun Bian,
Xuhui Zhang,
Jufeng Zheng,
Lianqing Li

Affiliations

Kaiyue Song: 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
Shuo Jiang: 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
Ying Cai: 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
Wei 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
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
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.
Lianqing Li: 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. 8
p. 100267

Abstract

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We investigated the carbon sequestration potential and underlying mechanisms of a paddy soil amended with biochar for 4 years. By adding maize straw and incubating the soil for 60 days in the laboratory at depths of 0–15 cm, 15–30 cm, and 30–50 cm, we found that biochar reduced soil organic carbon mineralization by 13.5 %, 27.8 % and 16.5 %, respectively. It also decreased cumulative net carbon mineralization and metabolic quotient values induced by fresh substrates at all depths. In addition, biochar and straw increased topsoil hydrolase activity and enhanced the competitiveness of fungi and gram-positive bacteria in the subsoil.

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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