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Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils

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dc.contributor.advisor Thevathasan, Naresh
dc.contributor.advisor Voroney, Paul
dc.contributor.author Graham, Jordan
dc.date.accessioned 2018-05-02T19:02:36Z
dc.date.available 2018-05-02T19:02:36Z
dc.date.copyright 2018-04
dc.date.created 2018-04-23
dc.date.issued 2018-05-02
dc.identifier.uri http://hdl.handle.net/10214/12956
dc.description.abstract Nineteen farms growing herbaceous biomass crops, switchgrass (Panicum virgatum) and Miscanthus (Miscanthus spp.), were sampled for soil organic carbon (SOC) across Ontario, Canada in 2016, along with nearby agricultural fields and woodlots to compare SOC between land-uses. Woodlots contained significantly higher (p<0.05) SOC concentrations (4.26 ± 0.29%) than any other land-use. Switchgrass and Miscanthus had numerically higher SOC concentrations (2.50 ± 0.29% and 2.50 ± 0.36%, respectively) than agricultural fields (2.21 ± 0.31%) depicting SOC sequestration potential. Numerical trends in SOC stocks showed that woodlots (103.55 ± 7.40 Mg C ha-1) contained more SOC than switchgrass (85.30 ± 7.14 Mg C ha-1), Miscanthus (83.36 ± 8.97 Mg C ha-1), and agriculture (80.51 ± 7.74 Mg C ha-1). SOC stocks in woodlots were significantly higher (p<0.05) than Miscanthus and agriculture, but not switchgrass. δ13C analysis and baseline comparisons showed that herbaceous biomass crops are adding organic matter to the SOC pool. en_US
dc.description.sponsorship Financial support for this research was provided by the Ontario Ministry of Agriculture, Food and Rural Affairs. Additional thanks are extended to the Ontario Biomass Producers Cooperative for their ongoing support. en_US
dc.language.iso en en_US
dc.subject Soil organic carbon en_US
dc.subject soil organic matter en_US
dc.subject swtichgrass en_US
dc.subject miscanthus en_US
dc.subject climate change en_US
dc.subject biomass crops en_US
dc.subject land-use change en_US
dc.title Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils en_US
dc.type Thesis en_US
dc.degree.programme Environmental Sciences en_US
dc.degree.name Master of Science en_US
dc.degree.department School of Environmental Sciences en_US


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