Timothy A. Volk

Research Field

Living Snow Fence Design

Justin P Heavey Timothy A. Volk

Fence (mathematics)

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The development of harvesting systems in woody biomass supply chains

Elsevier eBooks (2023)

Timothy A. Volk Mark H. Eisenbies Karl Hallen

10.1016/b978-0-323-91187-0.00004-7

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Soil respiration in shrub willow (Salix x dasyclados) biomass crop increased on the third year after removal

International Journal of Global Warming (2018)

Miraç Aydın Renato S. Pacaldo Timothy A. Volk

The SWBC production system is not only a source of renewable energy, but also a carbon sink. However, one of the uncertainties in the greenhouse gas potential analysis of this system is soil CO2 efflux (Fc) rates after its termination. We examined the Fc rates for three years and determined the total CO2 production of SWBC fields following the termination and removal of SWBC fields. Four current SWBC fields of 5-, 12-, 14-, and 19-years old were used as sampling plots. The mean Fc rates did not differ statistically between ages (p = 0.66), and there was no significant interaction effect between age and year (p = 0.94). However, Fc rates significantly increased in the third year (p = 0.01). Annual cumulative Fc ratios at different seasons were 52% for summer, 26% for fall, 16% for spring, and 6% for winter.

Soil respiration

Sink (geography)

Soil carbon

Growing season

10.1504/ijgw.2018.091953

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Citations (1)

Fast-growing willow shrub named 'Millbrook'

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2007)

Lawrence P. Abrahamson Richard F. Kopp Lawrence B. Smart Timothy A. Volk

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Shrub Willow Renewable Energy Environmental Benefits: Opportunities for Rural Development

Justin P Heavey Timothy A. Volk

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Bulk Density Data of Willow Chips for Collection Vehicles Operating in a Short Rotation Willow Crop Bulk Density Cape Vincent Variable Descriptions.tab

Harvard Dataverse (2019)

Mark H. Eisenbies Obste Therasme Timothy A. Volk Karl Hallen

:unav

Cape

10.7910/dvn/mnrdw8/h2setf

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Change in Yield Between First and Second Rotations in Willow (Salix spp.) Biomass Crops is Strongly Related to the Level of First Rotation Yield

BioEnergy Research (2015)

Nathan J. Sleight Timothy A. Volk Gregg A. Johnson Mark H. Eisenbies Shun Shi

Short rotation forestry

Short rotation coppice

10.1007/s12155-015-9684-0

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Citations (36)

Maximizing pollinator diversity in willow biomass plantings: A comparison between willow sexes and among pedigrees

Biomass and Bioenergy (2018)

Giuseppe Tumminello Timothy A. Volk Scott H. McArt Melissa K. Fierke

10.1016/j.biombioe.2018.07.013

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Willow Biomass Crops Are a Carbon Negative or Low-Carbon Feedstock Depending on Prior Land Use and Transportation Distances to End Users

Energies (2020)

Sheng Yang Timothy A. Volk Marie‐Odile P. Fortier

Few life cycle assessments (LCAs) on willow biomass production have investigated the effects of key geographically specific parameters. This study uses a spatial LCA model for willow biomass production to determine spatially explicit greenhouse gas (GHG) emissions and energy return on investment (EROI), including land use conversion from pasture and cropland or grassland. There were negative GHG emissions on 92% of the land identified as suitable for willow biomass production, indicating this system’s potential for climate change mitigation. For willow planted on cropland or pasture, life cycle GHG emissions ranged from −53.2 to −176.9 kg CO2eq Mg-1. When willow was grown on grassland the projected decrease in soil organic carbon resulted in a slightly positive GHG balance. Changes in soil organic carbon (SOC) associated with land use change, transportation distance, and willow yield had the greatest impacts on GHG emissions. Results from the uncertainty analysis exhibited large variations in GHG emissions between counties arising from differences in these parameters. The average EROI across the entire region was 19.2. Willow biomass can be a carbon negative or low-carbon energy source with a high EROI in regions with similar infrastructure, transportation distances, and growing conditions such as soil characteristics, land cover types, and climate.

Soil carbon

Energy crop

Short rotation forestry

Marginal land

10.3390/en13164251

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Citations (25)

Evaluating the impact of three incentive programs on the economics of cofiring willow biomass with coal in New York State

Energy Policy (2003)

Pradeep J. Tharakan Timothy A. Volk Christopher A. Lindsey Lawrence P. Abrahamson Edwin H. White

Cofiring

Short rotation coppice