Early accumulation of active fraction soil carbon in newly established cellulosic biofuel systems
Abstract
We examined relative changes in soil C pools shortly after the establishment of six perennial and two annual bioenergy cropping systems that differed in diversity (monoculture vs. polyculture). Perennial systems included two monocultures (switchgrass, Panicum virgatum; and miscanthus, Miscanthus × giganteus) and four polycultures including hybrid poplar (Populus sp.) + herbaceous understory; mixed native grasses, successional vegetation, and restored prairie. Two annual systems included no-till continuous corn (Zea mays) and rotational corn (corn-soybean (Glycine max)-canola (Brassica napus)). Each crop was planted in a full factorial design at both a moderate fertility Alfisol and a high fertility Mollisol site. Relative differences in active, slow, and passive C pools in surface soils, where C changes are most likely to be detected early, were evaluated with 322-day laboratory incubations followed by acid hydrolysis to infer different pools from exponential decay curves. Five years post-establishment, active C pools under perennial polycultures at the Alfisol site were up to twice those under annual and perennial monocultures, and followed the order hybrid poplars (696 ± 216 μg C g-1 soil, n = 5 replicate blocks) ≈ native grasses (656 ± 155) ≈ restored prairie (638 ± 44) > early successional (500 ± 54) ≫ continuous cornmore »
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1631763
- Alternate Identifier(s):
- OSTI ID: 1506648
- Grant/Contract Number:
- FCO2-07ER64494; FC02-07ER64494
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Geoderma
- Additional Journal Information:
- Journal Name: Geoderma Journal Volume: 318 Journal Issue: C; Journal ID: ISSN 0016-7061
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 09 BIOMASS FUELS
Citation Formats
Sprunger, Christine D., and Philip Robertson, G. Early accumulation of active fraction soil carbon in newly established cellulosic biofuel systems. Netherlands: N. p., 2018.
Web. doi:10.1016/j.geoderma.2017.11.040.
Sprunger, Christine D., & Philip Robertson, G. Early accumulation of active fraction soil carbon in newly established cellulosic biofuel systems. Netherlands. https://doi.org/10.1016/j.geoderma.2017.11.040
Sprunger, Christine D., and Philip Robertson, G. 2018.
"Early accumulation of active fraction soil carbon in newly established cellulosic biofuel systems". Netherlands. https://doi.org/10.1016/j.geoderma.2017.11.040.
@article{osti_1631763,
title = {Early accumulation of active fraction soil carbon in newly established cellulosic biofuel systems},
author = {Sprunger, Christine D. and Philip Robertson, G.},
abstractNote = {We examined relative changes in soil C pools shortly after the establishment of six perennial and two annual bioenergy cropping systems that differed in diversity (monoculture vs. polyculture). Perennial systems included two monocultures (switchgrass, Panicum virgatum; and miscanthus, Miscanthus × giganteus) and four polycultures including hybrid poplar (Populus sp.) + herbaceous understory; mixed native grasses, successional vegetation, and restored prairie. Two annual systems included no-till continuous corn (Zea mays) and rotational corn (corn-soybean (Glycine max)-canola (Brassica napus)). Each crop was planted in a full factorial design at both a moderate fertility Alfisol and a high fertility Mollisol site. Relative differences in active, slow, and passive C pools in surface soils, where C changes are most likely to be detected early, were evaluated with 322-day laboratory incubations followed by acid hydrolysis to infer different pools from exponential decay curves. Five years post-establishment, active C pools under perennial polycultures at the Alfisol site were up to twice those under annual and perennial monocultures, and followed the order hybrid poplars (696 ± 216 μg C g-1 soil, n = 5 replicate blocks) ≈ native grasses (656 ± 155) ≈ restored prairie (638 ± 44) > early successional (500 ± 54) ≫ continuous corn (237 ± 68) ≈ rotational corn (180 ± n.a.). Active C pools in perennial monocultures were similar to those in continuous corn: switchgrass (274 ± 29) ≈ miscanthus (299 ± 9). In contrast, differences in active C pools among crops at the more fertile Mollisol site were not detectable except for greater pools in the restored prairie and rotational corn systems. At both sites, slow and passive C pools differed little among systems except that slow pools were greater in the poplar system. That diversity rather than perenniality itself led to greater active C pools suggests that polycultures might be used to accelerate soil C accumulation in bioenergy and other perennial cropping systems.},
doi = {10.1016/j.geoderma.2017.11.040},
url = {https://www.osti.gov/biblio/1631763},
journal = {Geoderma},
issn = {0016-7061},
number = C,
volume = 318,
place = {Netherlands},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
Works referencing / citing this record:
Soil organic carbon sequestration and its stability after vegetation restoration in the Loess Hilly Region, China
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- Xu, Hongwei; Qu, Qing; Wang, Minggang
- Land Degradation & Development, Vol. 31, Issue 5
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- von Haden, Adam C.; Kucharik, Christopher J.; Jackson, Randall D.
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- Kravchenko, Alexandra N.; Guber, Andrey K.; Quigley, Michelle Y.
- GCB Bioenergy, Vol. 10, Issue 11
Figures / Tables found in this record: