Responses of two provenances of Fagus sylvatica seedlings to a combination of four temperature and two CO2 treatments during their first growing season: gas exchange of leaves and roots
Royal Veterinary and Agriculture University, Department of Economics and Natural Resources, Arboretum, Kirkegårdsvej 3A, DK-2970 Hørsholm, Denmark; Author for correspondence (fax +45 35 38 3629;e-mail;).