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Belowground plant carbon and nitrogen exchange: plant-derived carbon inputs and pore structure formation
- Award ID(s):
- 2224712
- PAR ID:
- 10613675
- Publisher / Repository:
- Elsevier
- Date Published:
- Journal Name:
- Soil Biology and Biochemistry
- Volume:
- 207
- Issue:
- C
- ISSN:
- 0038-0717
- Page Range / eLocation ID:
- 109833
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Abstract The decline in global plant diversity has raised concerns about its implications for carbon fixation and global greenhouse gas emissions (GGE), including carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). Therefore, we conducted a comprehensive meta‐analysis of 2103 paired observations, examining GGE, soil organic carbon (SOC) and plant carbon in plant mixtures and monocultures. Our findings indicate that plant mixtures decrease soil N2O emissions by 21.4% compared to monocultures. No significant differences occurred between mixtures and monocultures for soil CO2emissions, CH4emissions or CH4uptake. Plant mixtures exhibit higher SOC and plant carbon storage than monocultures. After 10 years of vegetation development, a 40% reduction in species richness decreases SOC content and plant carbon storage by 12.3% and 58.7% respectively. These findings offer insights into the intricate connections between plant diversity, soil and plant carbon storage and GGE—a critical but previously unexamined aspect of biodiversity–ecosystem functioning.more » « less
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