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Seasonal soil CO2 flux under big sagebrush (Artemisia tridentata Nutt.)
Amacher, Michael C.; Mackowiak, Cheryl L. 2011. Seasonal soil CO2 flux under big sagebrush (Artemisia tridentata Nutt.). In: Monaco, T. A.; Schupp, E. W.; Pendleton, R. L.; Kitchen, S. G.; Palacios, P. K., comps. Proceedings of the 16th Wildland Shrub Symposium: Threats to Shrubland Ecosystem Integrity; May 25-27, 2010; Logan, UT. Natural Resources and Environmental Issues. 17: Article 27. Online: http://digitalcommons.usu.edu/nrei/vol17/iss1/27
Soil respiration is a major contributor to atmospheric CO2, but accurate landscape-scale estimates of soil CO2 flux for many ecosystems including shrublands have yet to be established. We began a project to measure, with high spatial and temporal resolution, soil CO2 flux in a stand (11 x 25 m area) of big sagebrush (Artemisia tridentata Nutt.) at the Logan, Utah, Forestry Sciences Laboratory. Beginning on Nov. 1, 2009, hourly soil CO2 flux measurements were made at a single location in the stand using the Li-Cor LI-8100 soil CO2 flux instrument and 20-cm long-term chamber. Beginning in April, 2010, monthly soil CO2 flux measurements were made on a grid of 11 locations within the stand using the LI- 8100 equipped with the 20-cm survey chamber. Hourly soil temperature (10-cm depth) and volumetric soil water content data were also collected.
Keywords: soil CO2, big sagebrush, Artemisia tridentata
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Publications: Seasonal soil CO2 flux under big sagebrush (Artemisia
Electronic Publish Date: October 5, 2012
Last Update: October 5, 2012
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