More than twice as much carbon is held in soils as in vegetation or the atmosphere1, and changes in soil carbon content can have a large effect on the global carbon budget. The possibility that climate change is being reinforced by increased carbon dioxide emissions from soils owing to rising temperature is the subject of a continuing debate2,3,4,5,6,7,8,9. But evidence for the suggested feedback mechanism has to date come solely from small-scale laboratory and field experiments and modelling studies2,3,4,5,6,7,8,9. Here we use data from the National Soil Inventory of England and Wales obtained between 1978 and 2003 to show that carbon was lost from soils across England and Wales over the survey period at a mean rate of 0.6% yr-1 (relative to the existing soil carbon content). We find that the relative rate of carbon loss increased with soil carbon content and was more than 2% yr-1 in soils with carbon contents greater than 100 g kg-1. The relationship between rate of carbon loss and carbon content is irrespective of land use, suggesting a link to climate change. Our findings indicate that losses of soil carbon in England and Wales—and by inference in other temperate regions—are likely to have been offsetting absorption of carbon by terrestrial sinks.
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Batjes, N. H. Total carbon and nitrogen in the soils of the world. Eur. J. Soil Sci. 47, 151–163 (1996)
Jenkinson, D. S., Adams, D. E. & Wild, A. Model estimates of CO2 emissions from soil in response to global warming. Nature 351, 304–306 (1991)
Cao, M. K. & Woodward, F. I. Dynamic responses of terrestrial ecosystem carbon cycling to global climate change. Nature 393, 249–252 (1998)
Giardina, C. P. & Ryan, M. G. Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature. Nature 404, 858–861 (2000)
Cox, P. M., Betts, R. A., Jones, C. D., Spall, S. A. & Totterdell, I. J. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature 408, 184–187 (2000)
Davidson, E. A., Trumbore, S. E. & Amundson, R. Soil warming and organic carbon content. Nature 408, 789–790 (2000)
Fang, C., Smith, P., Moncrieff, J. B. & Smith, J. U. Similar response of labile and resistant soil organic matter pools to changes in temperature. Nature 433, 57–59 (2005)
Knorr, W., Prentice, I. C., House, J. I. & Holland, E. A. Long-term sensitivity of soil carbon turnover to global warming. Nature 433, 298–301 (2005)
Powlson, D. S. Will soil amplify climate change? Nature 433, 204–205 (2005)
Loveland, P. J. in Element Concentration Cadasters in Ecosystems (eds Lieth, H. & Markert, B.) 73–80 (VCH, Weinheim, Germany, 1990)
Bradley, R. I. et al. A soil carbon and land use database for the UK. Soil Use Manag. (in the press)
Worrall, F., Burt, T. & Shedden, R. Long term records of riverine dissolved organic matter. Biogeochemistry 64, 165–178 (2003)
Freeman, C. et al. Export of dissolved organic carbon from peatlands under elevated carbon dioxide levels. Nature 430, 195–198 (2004)
Schimel, D. S. et al. Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems. Nature 414, 169–172 (2001)
Guo, L. B. & Gifford, R. M. Soil carbon stocks and land use change: a meta-analysis. Glob. Change Biol. 8, 345–360 (2002)
Houghton, R. A. Revised estimates of the annual net flux of carbon to the atmosphere from changes in land use and land management 1850–2000. Tellus B 55, 378–390 (2003)
Smith, K. A. et al. Exchange of greenhouse gases between soil and atmosphere: interactions of soil physical factors and biological processes. Eur. J. Soil Sci. 54, 779–791 (2003)
Hulme, M. et al. Climate Change Scenarios for the United Kingdom: The UKCIP02 Scientific Report (Tyndall Centre for Climate Change Research, Norwich, UK, 2002)
Webster, R. & Burgess, T. M. Sampling and bulking strategies for estimating soil properties in small regions. J. Soil Sci. 35, 127–140 (1984)
Kalembasa, S. J. & Jenkinson, D. S. A comparative study of titrimetric and gravimetric methods for the determination of organic carbon in soil. J. Sci. Food Agric. 24, 1085–1090 (1973)
Avery, B. W. & Bascomb, C. L. Soil Survey Laboratory Methods (Soil Survey Technical Monograph No. 6, Soil Survey of England & Wales, Harpenden, UK, 1974)
Lark, R. M. & Cullis, B. R. Model-based analysis using REML for inference from systematically sampled data on soil. Eur. J. Soil Sci. 55, 777–797 (2004)
Gilmour, A. R. et al. ASReml User Guide release 1.0. (VSN International, Hemel Hempstead, UK, 2002)
Avery, B. W. Soil Classification for England and Wales (Higher Categories) (Soil Survey Technical Monograph No. 14, Soil Survey of England & Wales, Harpenden, 1980)
Howard, P. J. A. et al. The carbon content of soil and its geographical distribution in Great Britain. Soil Use Manag. 11, 9–15 (1995)
We thank Defra for funding this research, R. Andrews for technical assistance, and D. Powlson and J. Hollis for comments on the draft Letter.
Reprints and permissions information is available at npg.nature.com/reprintsandpermissions. The authors declare no competing financial interests.
Variability of soil carbon content measured at 0, 10 and 50m from ten target sites, confirming that the accuracy with which sites could be relocated was adequate. (DOC 25 kb)
Comparison of Corg values measured by ion loss on ignition and by the modified Walkley-Black method for 95 souls with Corg = 20-200g kg-1, confirming that the change of method for high carbon soils introduced no artefacts. (DOC 25 kb)
Comparison of Corg values obtained in 2004 on archived soils from the original sampling with the values obtained at the time of the original sampling, confirming that there were no significant differences in analytical precision between the samplings. This file was corrected on 24 August 2007. (DOC 28 kb)
Characteristics of the sites used to study the accuracy of relocation and local variation of soil carbon. (DOC 35 kb)
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Bellamy, P., Loveland, P., Bradley, R. et al. Carbon losses from all soils across England and Wales 1978–2003. Nature 437, 245–248 (2005). https://doi.org/10.1038/nature04038
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