Legacy of human-induced C erosion and burial on soil-atmosphere C exchange
(2012)
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA.
109(47).
p.19492-19497
- Author
- Kristof Van Oost, Gert Verstraeten, Sebastian Doetterl (UGent) , Bastiaan Notebaert, Francois Wiaux, Nils Broothaerts and Johan Six
- Organization
- Abstract
- Carbon exchange associated with accelerated erosion following land cover change is an important component of the global C cycle. In current assessments, however, this component is not accounted for. Here, we integrate the effects of accelerated C erosion across point, hillslope, and catchment scale for the 780-km(2) Dijle River catchment over the period 4000 B. C. to A. D. 2000 to demonstrate that accelerated erosion results in a net C sink. We found this long-term C sink to be equivalent to 43% of the eroded C and to have offset 39% (17-66%) of the C emissions due to anthropogenic land cover change since the advent of agriculture. Nevertheless, the erosion-induced C sink strength is limited by a significant loss of buried C in terrestrial depositional stores, which lagged the burial. The time lag between burial and subsequent loss at this study site implies that the C buried in eroded terrestrial deposits during the agricultural expansion of the last 150 y cannot be assumed to be inert to further destabilization, and indeed might become a significant C source. Our analysis exemplifies that accounting for the non-steady-state C dynamics in geomorphic active systems is pertinent to understanding both past and future anthropogenic global change.
- Keywords
- CATCHMENT, SATURATION, EMISSIONS, IMPACT, soil erosion, DEPOSITION, SIMULATED RAINFALL, ORGANIC-CARBON, CARBON DYNAMICS, LAND-COVER CHANGE, ALLUVIAL SEDIMENT STORAGE, global carbon cycling, human impact, geomorphic cascade, soil organic carbon
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-4331986
- MLA
- Van Oost, Kristof, et al. “Legacy of Human-Induced C Erosion and Burial on Soil-Atmosphere C Exchange.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 109, no. 47, 2012, pp. 19492–97, doi:10.1073/pnas.1211162109.
- APA
- Van Oost, K., Verstraeten, G., Doetterl, S., Notebaert, B., Wiaux, F., Broothaerts, N., & Six, J. (2012). Legacy of human-induced C erosion and burial on soil-atmosphere C exchange. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 109(47), 19492–19497. https://doi.org/10.1073/pnas.1211162109
- Chicago author-date
- Van Oost, Kristof, Gert Verstraeten, Sebastian Doetterl, Bastiaan Notebaert, Francois Wiaux, Nils Broothaerts, and Johan Six. 2012. “Legacy of Human-Induced C Erosion and Burial on Soil-Atmosphere C Exchange.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109 (47): 19492–97. https://doi.org/10.1073/pnas.1211162109.
- Chicago author-date (all authors)
- Van Oost, Kristof, Gert Verstraeten, Sebastian Doetterl, Bastiaan Notebaert, Francois Wiaux, Nils Broothaerts, and Johan Six. 2012. “Legacy of Human-Induced C Erosion and Burial on Soil-Atmosphere C Exchange.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109 (47): 19492–19497. doi:10.1073/pnas.1211162109.
- Vancouver
- 1.Van Oost K, Verstraeten G, Doetterl S, Notebaert B, Wiaux F, Broothaerts N, et al. Legacy of human-induced C erosion and burial on soil-atmosphere C exchange. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2012;109(47):19492–7.
- IEEE
- [1]K. Van Oost et al., “Legacy of human-induced C erosion and burial on soil-atmosphere C exchange,” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 109, no. 47, pp. 19492–19497, 2012.
@article{4331986,
abstract = {{Carbon exchange associated with accelerated erosion following land cover change is an important component of the global C cycle. In current assessments, however, this component is not accounted for. Here, we integrate the effects of accelerated C erosion across point, hillslope, and catchment scale for the 780-km(2) Dijle River catchment over the period 4000 B. C. to A. D. 2000 to demonstrate that accelerated erosion results in a net C sink. We found this long-term C sink to be equivalent to 43% of the eroded C and to have offset 39% (17-66%) of the C emissions due to anthropogenic land cover change since the advent of agriculture. Nevertheless, the erosion-induced C sink strength is limited by a significant loss of buried C in terrestrial depositional stores, which lagged the burial. The time lag between burial and subsequent loss at this study site implies that the C buried in eroded terrestrial deposits during the agricultural expansion of the last 150 y cannot be assumed to be inert to further destabilization, and indeed might become a significant C source. Our analysis exemplifies that accounting for the non-steady-state C dynamics in geomorphic active systems is pertinent to understanding both past and future anthropogenic global change.}},
author = {{Van Oost, Kristof and Verstraeten, Gert and Doetterl, Sebastian and Notebaert, Bastiaan and Wiaux, Francois and Broothaerts, Nils and Six, Johan}},
issn = {{0027-8424}},
journal = {{PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}},
keywords = {{CATCHMENT,SATURATION,EMISSIONS,IMPACT,soil erosion,DEPOSITION,SIMULATED RAINFALL,ORGANIC-CARBON,CARBON DYNAMICS,LAND-COVER CHANGE,ALLUVIAL SEDIMENT STORAGE,global carbon cycling,human impact,geomorphic cascade,soil organic carbon}},
language = {{eng}},
number = {{47}},
pages = {{19492--19497}},
title = {{Legacy of human-induced C erosion and burial on soil-atmosphere C exchange}},
url = {{http://doi.org/10.1073/pnas.1211162109}},
volume = {{109}},
year = {{2012}},
}
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