Authors
H. Liu
Department of Botany, Natural History Museum, University of Oslo, Oslo
T. Økland
Norwegian Forest and Landscape Institute, Ås, Norway
R. Halvorsen
Department of Botany, Natural History Museum, University of Oslo, Oslo, Norway
J. Gao
Institute of Ecology, Chinese Research Academy of Environmental Science, Beijing
Q. Liu
College of Life Science, Beijing Normal University, Beijing
O. Eilertsen
Norwegian Forest and Landscape Institute, Ås, Norway
H. Bratli
Norwegian Forest and Landscape Institute, Ås, Norway