Generalities in the growth, allocation and leaf quality responses to elevated CO2 in eight woody species

acer pseudoplatanus air pollution azote buddleja buddleja davidii carbon dioxide enrichment enrichissement en gaz carbonique fagus sylvatica feuille fraxinus excelsior growth rate hojas ilex aquifolium leaf area leaves nitrogen prunus laurocerasus superficie foliar surface foliaire taux de croissance taxus baccata ulex