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Title: AmeriFlux US-Me2 Metolius-intermediate aged ponderosa pine

This is the AmeriFlux version of the carbon flux data for the site US-Me2 Metolius-intermediate aged ponderosa pine. Site Description - The mean stand age is 64 years old and the stand age of the oldest trees is about 100 years old. This site is one of the Metolius cluster sites with different age and disturbance classes and part of the AmeriFlux network ( The overstory is almost exclusively composed of ponderosa pine trees (Pinus ponderosa Doug. Ex P. Laws) with a few scattered incense cedars (Calocedrus decurrens (Torr.) Florin) and has a peak leaf area index (LAI) of 2.8 m2 m-2. Tree height is relatively homogeneous at about 16 m, and the mean tree density is approximately 325 trees ha-1 (Irvine et al., 2008). The understory is sparse with an LAI of 0.2 m2 m-2 and primarily composed of bitterbrush (Purshia tridentate (Push) DC.) and Manzanita (Arctostaphylos patula Greene). Soils at the site are sandy (69%/24%/7% sand/silt/clay at 0–0.2 m depth and 66%/27%/7% at 0.2–0.5 m depth, and 54%/ 35%/11% at 0.5–1.0 m depth), freely draining with a soil depth of approximately 1.5 m (Irvine et al., 2008; Law et al., 2001b; Schwarz et al., 2004).
  1. Oregon State University
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Data Type:
Specialized Mix
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Related Information: Irvine J, Law BE, Martin JG, and Vickers D (2008) Interannual variation in soil CO2 efflux and the response of root respiration to climate and canopy gas exchange in mature ponderosa pine. Global Change Biology, 14(12), 2848-2859. Thomas, C. K., Law, B. E., Irvine, J., Martin, J. G., Pettijohn, J. C., and Davis, K. J., 2009. Seasonal hydrology explains inter-annual and seasonal variation in carbon and water exchange in a semi-arid mature Ponderosa Pine forest in Central Oregon, J. Geophys. Res. Biogeosciences (in press) Vickers, D., C.Thomas, and B.Law, 2009. Random and systematic CO2 flux sampling errors for tower measurements over forests in the convective boundary layer. Agric. Forest Meteorol. 149, 73-83 Vickers, D., J. Irvine, J.G. Martin, and B.E. Law. 2012. Nocturnal subcanopy flow regimes and missing carbon dioxide. Agric. Forest Meteorol. 152: 101-108. Vickers, Dean, Christoph K. Thomas , Jonathan G. Martin , Beverly Law. 2009.Self-correlation between assimilation and respiration resulting from flux partitioning of eddy-covariance CO2 fluxes. Agricultural and Forest Meteorology 149: 1552–1555. Irvine, J., B. E. Law, M. R. Kurpius, P. M. Anthoni, D. Moore and P. A. Schwarz. 2004. Age-related changes in ecosystem structure and function and effects on water and carbon exchange in ponderosa pine. Tree Physiology 24:753–763 Vickers, D., C. Thomas, C. Pettijohn, J.G. Martin, and B.E. Law. 2012. Five years of carbon fluxes and inherent water-use efficiency at two semi-arid pine forests with different disturbance histories. Tellus B 64: 17159. Vickers D., Goeckede M., and Law B. 2010. Uncertainty estimates for 1-hour averaged turbulence fluxes of carbon dioxide, latent heat and sensible heat. Tellus: Series B 62: 87-99.
Research Org:
AmeriFlux; Oregon State University
Sponsoring Org:
Country of Publication:
United States