The carbon budget in soils
Abstract
▪ Abstract The global soil C reservoir, ∼1500 Gt of C (1 Gt = 1012kg of C), is dynamic on decadal time scales and is sensitive to climate and human disturbance. At present, as a result of land use, soil C is a source of atmospheric CO2in the tropics and possibly part of a sink in northern latitudes. Here I review the processes responsible for maintaining the global soil C reservoir and what is known about how it responds to direct and indirect human perturbations. “I am fire and air; my other elements I give to baser life” —William Shakespeare, Antony and Cleopatra
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Many of the reported benefits of rotational grazing, especially those related to pasture production, can translate into increases in SOC in rotationally grazed paddocks relative to continuously grazed paddocks because greater organic matter inputs to the soil will lead to greater SOC levels.
“Many of the reported benefits of rotational grazing especially those related to pasture production can translate into increases in SOC in rotationally grazed paddocks relative to continuously grazed paddocks because, all else being equal, greater organic matter inputs to the soil will lead to greater SOC levels [22].”
From Impacts of Rotational Grazing on Soil Carbon in Native Grass-Based Pastures in Southern Australia (2015) · cites this paper as [22]
Climate is a master variable controlling SOC stocks at regional scales due to its overriding influence on primary productivity and microbial activity.
“These findings are consistent with well established ecological principles that climate is a master variable controlling SOC stocks at regional scales due to its overriding influence on primary productivity and microbial activity [22].”
From Impacts of Rotational Grazing on Soil Carbon in Native Grass-Based Pastures in Southern Australia (2015) · cites this paper as [22]
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References 98 · Cited by 721
- Authors
- Amundson, R.
- Affiliations
- University of California, Berkeley (US)
- Corresponding author
- Amundson, Ronald
- ORCID
- Amundson, Ronald
- Venue
- Annual Review of Earth and Planetary Sciences
- Publisher
- Annual Reviews
- Published
- 2001-05
- Volume
- 29
- Issue
- 1
- Pages
- 535-562
- ISSN
- 0084-6597 (ISSN-L)
- 1545-4495
- OpenAlex
- W2152632432
- Cited by
- 721
- References
- 98
- Citations by year
- 2026: 16 · 2025: 19 · 2024: 28 · 2023: 30 · 2022: 23 · 2021: 37 · 2020: 34 · 2019: 38 · 2018: 41 · 2017: 31 · 2016: 47 · 2015: 44 · 2014: 41 · 2013: 43 · 2012: 28
- FWCI
- 4.61
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Annual Review of Earth and Planetary Sciences (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil erosion and sediment transport
- Physical Sciences › Environmental Science › Environmental Engineering › Soil Geostatistics and Mapping
- Keywords
- soil carbon, carbon balance, carbon cycle, land use change, human disturbance, climate change, tropical soils, northern latitudes, atmospheric CO2, carbon sinks and sources
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