1. State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical Science Beijing Normal University Beijing China
2. Harvard Forest Harvard University Petersham Massachusetts
3. Faculty of Forestry and Environmental Management University of New Brunswick Fredericton Canada
4. Biology Department University of Washington Seattle Washington
5. Institute of Plant Sciences University of Bern Bern Switzerland
6. National Centers for Environmental Information National Oceanic and Atmospheric Administration Asheville North Carolina