Publications

Publications Found: 1373
Post-Fire Carbon Dioxide Fluxes In The Western Canadian Boreal Forest: Evidence From Towers, Aircraft And Remote Sensing
Amiro, B. D., Ian MacPherson, J., Desjardins, R. L., Chen, J. M., Liu, J.

Recent CO2 flux measurements from towers and aircraft (net ecosystem exchange by eddy covariance) and remote sensing/modeling (net primary productivity—NPP) following fire show that the regenerating boreal forest in western Canada has a low initial flux that …


Journal: Agricultural And Forest Meteorology, Volume 115 (1-2): 91-107 (2003), ISBN . DOI: 10.1016/s0168-1923(02)00170-3 Sites: CA-SF2, CA-SF3

Diurnal And Seasonal Changes In Stem Increment And Water Use By Yellow Poplar Trees In Response To Environmental Stress
McLaughlin, S. B., Wullschleger, S. D., Nosal, M.
To evaluate indicators of whole-tree physiological responses to climate stress, we determined seasonal, daily and diurnal patterns of growth and water use in 10 yellow poplar (Liriodendron tulipifera L.) trees in a stand recently released from competition. Precise measurements of stem increment …


Journal: Tree Physiology, Volume 23 (16): 1125-1136 (2003), ISBN . DOI: 10.1093/treephys/23.16.1125 Sites: US-WBW

Modelling The Discrimination Of 13CO2 Above And Within A Temperate Broad-Leaved Forest Canopy On Hourly To Seasonal Time Scales
Baldocchi, D. D., Bowling, D. R.

Fluxes and concentrations of carbon dioxide and 13CO2 provide information about ecosystem physiological processes and their response to environmental …


Journal: Plant, Cell And Environment, Volume 26 (2): 231-244 (2003), ISBN . DOI: 10.1046/j.1365-3040.2003.00953.x Sites: US-WBW

Assessing Soil CO2 Efflux Using Continuous Measurements Of CO2 Profiles In Soils With Small Solid-State Sensors
Tang, J., Baldocchi, D. D., Qi, Y., Xu, L.

This paper describes a new method to monitor continuously soil CO2 profiles using small solid-state CO2 sensors buried at different depths of the soil. Based on the measurement of soil CO2 profile and a gaseous diffusivity model, we estimated …


Journal: Agricultural And Forest Meteorology, Volume 118 (3-4): 207-220 (2003), ISBN . DOI: 10.1016/s0168-1923(03)00112-6 Sites: US-Ton

Changes In Carbon Storage And Fluxes In A Chronosequence Of Ponderosa Pine
Law, B. E., Sun, O. J., Campbell, J., Van Tuyl, S., Thornton, P. E.

Forest development following stand-replacing disturbance influences a variety of ecosystem processes including carbon exchange with the atmosphere. On a series of ponderosa pine (Pinius ponderosa var. Laws.) stands ranging from 9 to> 300 years in central Oregon, USA, we used biological measurements to estimate carbon …


Journal: Global Change Biology, Volume 9 (4): 510-524 (2003), ISBN . DOI: 10.1046/j.1365-2486.2003.00624.x Sites: US-Me4, US-Me5

Airflows And Turbulent Flux Measurements In Mountainous Terrain: Part 1. Canopy and local effects
Turnipseed, A. A., Anderson, D. E., Blanken, P. D., Baugh, W. M., Monson, R. K.

We have studied the effects of local topography and canopy structure on turbulent flux measurements at a site located in mountainous terrain within a subalpine, coniferous forest. Our primary aim was to determine whether the complex terrain of the site affects the accuracy of eddy flux measurements from a practical perspective. We …


Journal: Agricultural And Forest Meteorology, Volume 119 (1-2): 1-21 (2003), ISBN . DOI: 10.1016/s0168-1923(03)00136-9 Sites: US-NR1

Reduction Of Forest Floor Respiration By Fertilization On Both Carbon Dioxide-Enriched And Reference 17-Year-Old Loblolly Pine Stands
Butnor, J. R., Johnsen, K. H., Oren, R., Katul, G. G.

Elevated atmospheric carbon dioxide (CO2e) increases soil respiration rates in forest, grassland, agricultural and wetland systems as a result of increased …


Journal: Global Change Biology, Volume 9 (6): 849-861 (2003), ISBN . DOI: 10.1046/j.1365-2486.2003.00630.x Sites: US-Dk3

Creating Spatially Contiguous Yield Classes For Site-Specific Management
Ping, J. L., Dobermann, A.

Annual yield maps are spatially fragmented because of random variation caused by crop management as well as measurement errors. Two approaches for creating maps of spatially contiguous yield classes were evaluated at two irrigated sites. In the first approach, prior-classification interpolation (PCI), grid size was increased from …


Journal: Agronomy Journal, Volume 95 (5): 1121-1131 (2003), ISBN . DOI: 10.2134/agronj2003.1121 Sites: US-Ne1, US-Ne2, US-Ne3

Ecosystem-Atmosphere Exchange Of Carbon Dioxide Over A Mixed Hardwood Forest In Northern Lower Michigan
Schmid, H. P.

We report results from the first 3 years (1999–2001) of long-term measurements of net ecosystem exchange (NEE) at an AmeriFlux site over a mixed hardwood forest in northern lower Michigan. The primary measurement methodology uses eddy covariance systems with closed-path infrared gas analyzers at two heights (46 and 34 m) above …


Journal: Journal Of Geophysical Research, Volume 108 (D14): 4417-n/a (2003), ISBN . DOI: 10.1029/2002JD003011 Sites: US-UMB

Exposure To An Enriched CO2 Atmosphere Alters Carbon Assimilation And Allocation In A Pine Forest Ecosystem
Schafer, K. V., Oren, R., Ellsworth, D. S., Lai, C., Herrick, J. D., Finzi, A. C., Richter, D. D., Katul, G. G.

We linked a leaf-level CO2 assimilation model with a model that accounts for light attenuation in the canopy and measurements of sap-flux-based canopy conductance into a new canopy conductance-constrained carbon assimilation (4C-A) model. We estimated canopy CO2 uptake (AnC) at the Duke Forest …


Journal: Global Change Biology, Volume 9 (10): 1378-1400 (2003), ISBN . DOI: 10.1046/j.1365-2486.2003.00662.x Sites: US-Dk3