Publications

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Publications Found: 70

Modeling CO2 And Water Vapor Exchange Of A Temperate Broadleaved Forest Across Hourly To Decadal Time Scales
Baldocchi, D. D., Wilson, K. B.

Fluxes of carbon dioxide, water and energy between a temperate deciduous forest and the atmosphere were quantified across time scales of hours, days, seasons, years and decades. This exercise was performed using stand-level eddy covariance flux measurements and a biophysical model, CANOAK. The CANOAK model was tested with measurements …


Journal: Ecological Modelling, Volume 142 (1-2): 155-184 (2001), ISBN . DOI: 10.1016/s0304-3800(01)00287-3 Sites: US-WBW

A Comparison Of Methods For Determining Forest Evapotranspiration And Its Components: Sap-Flow, Soil Water Budget, Eddy Covariance And Catchment Water Balance
Wilson, K. B., Hanson, P. J., Mulholland, P. J., Baldocchi, D. D., Wullschleger, S. D.

A multi-year, multi-technique study was conducted to measure evapotranspiration and its components within an uneven-aged mixed deciduous forest in the Southeastern United States. Four different measurement techniques were used, including soil water budget (1 year), sap flow …


Journal: Agricultural And Forest Meteorology, Volume 106 (2): 153-168 (2001), ISBN . DOI: 10.1016/s0168-1923(00)00199-4 Sites: US-WBW

A Six-Year Study Of Sapling And Large-Tree Growth And Mortality Responses To Natural And Induced Variability In Precipitation And Throughfall
Hanson, P. J., Todd, D. E., Amthor, J. S.
Global climatic change may cause changes in regional precipitation that have important implications for forest growth in the southern United States. In 1993, a stand-level experiment was initiated on Walker Branch Watershed, Tennessee, to study the sensitivity of forest saplings and large trees to changes …


Journal: Tree Physiology, Volume 21 (6): 345-358 (2001), ISBN . DOI: 10.1093/treephys/21.6.345 Sites: US-WBW

Comparing Independent Estimates Of Carbon Dioxide Exchange Over 5 Years At A Deciduous Forest In The Southeastern United States
Wilson, K. B., Baldocchi, D. D.

At a deciduous forest in the southeast United States (Walker Branch Watershed, Oak Ridge, Tennessee), as at other sites with tall vegetation and/or complex terrain, it is difficult to temporally integrate …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 106 (D24): 34167-34178 (2001), ISBN . DOI: 10.1029/2001jd000624 Sites: US-WBW

Factors Controlling Evaporation And Energy Partitioning Beneath A Deciduous Forest Over An Annual Cycle
Wilson, K. B., Hanson, P. J., Baldocchi, D. D.

The energy balance components were measured above the ground surface of a temperate deciduous forest over an annual cycle using the eddy covariance technique. Over a year, the net radiation at the forest floor was 21.5% of that above the canopy, but this proportion was not constant, primarily because of the distinct phenological …


Journal: Agricultural And Forest Meteorology, Volume 102 (2-3): 83-103 (2000), ISBN . DOI: 10.1016/s0168-1923(00)00124-6 Sites: US-WBW

Seasonal And Interannual Variability Of Energy Fluxes Over A Broadleaved Temperate Deciduous Forest In North America
Wilson, K. B., Baldocchi, D. D.

The components of the surface energy balance were measured for 3 years over a broadleaved deciduous forest using the eddy covariance technique. Within years, the magnitude and distribution of fluxes was controlled by seasonal changes in solar radiation, drought, as well as leaf emergence and senescence. Evapotranspiration increased …


Journal: Agricultural And Forest Meteorology, Volume 100 (1): 1-18 (2000), ISBN . DOI: 10.1016/s0168-1923(99)00088-x Sites: US-WBW

Spatial And Seasonal Variability Of Photosynthetic Parameters And Their Relationship To Leaf Nitrogen In A Deciduous Forest
Wilson, K. B., Baldocchi, D. D., Hanson, P. J.

We used gas exchange techniques to estimate maximum rate of carboxylation (Vcmax), a measure of photosynthetic capacity, in the understory and upper crown of a closed deciduous forest over two seasons. There was extensive variability in photosynthetic capacity as a result of vertical canopy position, species type, …


Journal: Tree Physiology, Volume 20 (9): 565-578 (2000), ISBN . DOI: 10.1093/treephys/20.9.565 Sites: US-WBW

The Carbon Balance Of Tropical, Temperate And Boreal Forests
Malhi, Y., Baldocchi, D. D., Jarvis, P. G.

Forest biomes are major reserves for terrestrial carbon, and major components of global primary productivity. The carbon balance of forests is determined by a number of component …


Journal: Plant, Cell And Environment, Volume 22 (6): 715-740 (1999), ISBN . DOI: 10.1046/j.1365-3040.1999.00453.x Sites: CA-Obs, US-WBW

Dynamics Of Isotopic Exchange Of Carbon Dioxide In A Tennessee Deciduous Forest
Bowling, D. R., Baldocchi, D. D., Monson, R. K.

The combination of isotopic measurements and micrometeorological flux measurements is a powerful new approach that will likely lead to new insight into the dynamics of CO2 exchange between terrestrial …


Journal: Global Biogeochemical Cycles, Volume 13 (4): 903-922 (1999), ISBN . DOI: 10.1029/1999gb900072 Sites: US-WBW

On Using Eco-Physiological, Micrometeorological And Biogeochemical Theory To Evaluate Carbon Dioxide, Water Vapor And Trace Gas Fluxes Over Vegetation: A Perspective
Baldocchi, D., Meyers, T.

How eco-physiological, biogeochemical and micrometeorological theory can be used to compute biosphere–atmosphere, trace gas exchange rates is discussed within the framework of a process model. The accuracy of the theory is tested by comparing computations of mass and energy flux densities (water vapor, sensible heat, CO2


Journal: Agricultural And Forest Meteorology, Volume 90 (1-2): 1-25 (1998), ISBN . DOI: 10.1016/s0168-1923(97)00072-5 Sites: US-WBW