Elevated CO 2 and tree root growth: contrasting responses in Fraxinus excelsior , Quercus petraea and Pinus sylvestris
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چکیده
منابع مشابه
Apoplastic and symplastic phloem loading in Quercus robur and Fraxinus excelsior
Whereas most of the research on phloem loading is performed on herbaceous plants, less is known about phloem loading strategies in trees. In this study, the phloem loading mechanisms of Quercus robur and Fraxinus excelsior were analysed. The following features were examined: the minor vein structure, the sugar concentrations in phloem sap by the laser-aphid-stylet technique, the distribution of...
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1. Competition effects on growth of individual trees were examined for 4 years in aggrading, mixed-clone stands of trembling aspen ( Populus tremuloides Michx.) at the Aspen-FACE free-air CO 2 and O 3 enrichment facility in northern Wisconsin, USA. During each growing season stands received one of four combinations of atmospheric [CO 2 ] (ambient vs ∼ 56 Pa) and [O 3 ] (ambient vs ∼ 1·5 × ambie...
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متن کاملComparing carbon isotope composition of bulk wood and holocellulose from Quercus cerris, Fraxinus ornus and Pinus radiata tree rings
Tree-ring δC is widely employed in ecophysiological studies, because it represents an integra-ted proxy of the ratio between photosynthesis (A) and stomatal conductance (g), which expresses the intrin-sic water use efficiency (iWUE), strongly affected by the environmental conditions experienced by the plant during its life span. Tree-ring δC also reflects long term variations of atmospheric CO2...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1998
ISSN: 0028-646X,1469-8137
DOI: 10.1046/j.1469-8137.1998.00109.x