Above forest canopies, eddy covariance (EC) measurements of mass (CO2, H2O vapor) and energy exchange, assumed to represent ecosystem fluxes, are commonly …
Journal: Global Change Biology, Volume 12 (5): 883-896 (2006). DOI: 10.1111/j.1365-2486.2006.01131.x Sites: US-Dk1, US-Dk2, US-Dk3
Modeling evapotranspiration (ET) in Arctic coastal plain ecosystems is challenging owing to the unique conditions present in this environment, including permafrost, nonvascular vegetation, and a large standing dead vegetation component. In this study the ecosystem process model, BIOME-BGC, was adapted to represent these unique conditions …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 111 (G02021): n/a-n/a (2006). DOI: 10.1029/2005JG000102 Sites: US-Brw
We assessed the successional development of above- and belowground ecosystem biomass and carbon (C) pools in an age-sequence of four White pine (Pinus strobus L.) plantation stands (2-, 15-, 30-, and 65-years-old) in Southern Ontario, Canada. Biomass and C stocks of above- and belowground live and dead tree biomass, understorey …
Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 51-63 (2006). DOI: 10.1016/j.agrformet.2006.08.004 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4
Leaf area index (LAI) measurements made at 17 forest sites of the Fluxnet Canada Research Network are reported here. In addition to LAI, we also report other major structural parameters including the effective LAI, element clumping index, needle-to-shoot area ratio, and …
Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 257-268 (2006). DOI: 10.1016/j.agrformet.2006.08.005 Sites: CA-Ca2, CA-Ca3, CA-Gro, CA-Na1, CA-Oas, CA-Ojp, CA-Qfo, CA-SJ1, CA-SJ3, CA-TP2, CA-TP3, CA-TP4
Carbon (C) cycling in the boreal forest is driven by both natural and human disturbances, but there is little information on the impact of forest management practices on ecosystem-level C balance. We evaluated the C balance of a recently harvested boreal site in eastern …
Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 23-40 (2006). DOI: 10.1016/j.agrformet.2006.08.001 Sites: CA-Qcu
The interest of this study was to develop an initial assessment on the potential importance of biomass heat and biochemical energy storages for land-atmosphere interactions, an issue that has been largely neglected so far. We conducted flux tower observations and model simulations at a temperate deciduous forest site in central Missouri …
Journal: Journal Of Geophysical Research: Atmospheres, Volume 112 (D2): n/a-n/a (2006). DOI: 10.1029/2006jd007425 Sites: US-MOz
Net primary productivity (NPP) is enhanced under future atmospheric [CO2] in temperate forests representing a broad range of productivity. Yet questions remain in regard to how elevated [CO2]-induced NPP enhancement may be affected by climatic variations and limiting nutrient resources, as well as how this additional …
Journal: Proceedings Of The National Academy Of Sciences, Volume 103 (51): 19356-19361 (2006). DOI: 10.1073/pnas.0609448103 Sites: US-Dk3
We compared four existing process-based stand-level models of varying complexity (physiological principles in predicting growth, photosynthesis and evapotranspiration, biogeochemical …
Journal: Global Change Biology, Volume 12 (7): 1189-1207 (2006). DOI: 10.1111/j.1365-2486.2006.01158.x Sites: US-Dk2
Comparisons were made among Douglas-fir forest, aspen (broad leaf deciduous) forest and wheatgrass (C3) grassland for ecosystem-level water-use efficiency (WUE). WUE was defined as the ratio of photosynthetic CO2 assimilation rate and evapotranspiration (ET) rate. The ET data measured by eddy covariance were …
Journal: Global Change Biology, Volume 12 (2): 294-310 (2006). DOI: 10.1111/j.1365-2486.2005.01103.x Sites: CA-Ca1, CA-Let, CA-Oas
Forests play a significant role in the global carbon (C) cycle. Variability in weather, species, stand age, and current and past disturbances are some of the factors that control stand-level C dynamics. This study examines the relative roles of stand age and associated structural …
Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 6-22 (2006). DOI: 10.1016/j.agrformet.2006.03.018 Sites: CA-Ca1, CA-Ca2, CA-Ca3