Wood properties of trembling aspen and paper birch after 5 years of exposure to elevated concentrations of CO2 and O3
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Tree Physiology. 28: 805-813.
We investigated the interactive effects of elevated concentrations of carbon dioxide ([CO2]) and ozone ([O3]) on radial growth, wood chemistry and structure of five 5-year-old trembling aspen (Populus tremuloides Michx.) clones and the wood chemistry of paper birch (Betula papyrifera Marsh.). Material for the study was collected from the Aspen FACE (free-air CO2 enrichment) experiment in Rhinelander, WI, where the saplings had been exposed to four treatments: control, elevated [CO2] (560 ppm), elevated [O3] (1.5 x ambient) and their combination for five growing seasons.Wood properties of both species were altered in response to exposure to the treatments.
KeywordsBetula papyrifera carbon dioxide cell wall climate change FACE ozone Populus tremuloides wood chemistry wood structure
Kostiainen, Katri; Kaakinen, Seija; Warsta, Elina; Kubiske, Mark E.; Nelson, Neil D.; Sober, Jaak; Karnosky, David F.; Saranpaa, Pekka; Vapaavuori, Elina. 2008. Wood properties of trembling aspen and paper birch after 5 years of exposure to elevated concentrations of CO2 and O3. Tree Physiology. 28: 805-813.