1. College of Agronomy; Shenyang Agricultural University; Shenyang China
2. Center of Forest Ecosystem Studies and Qianyanzhou Ecological Station; Key Laboratory of Ecosystem Network Observation and Modeling; Synthesis Research Center of Chinese Ecosystem Research Network; Institute of Geographic Sciences and Natural Resources Research; Chinese Academy of Sciences; Beijing China
3. Center for Tree Science; The Morton Arboretum; Lisle Illinois
4. Department of Plant Biology; University of Minnesota; St. Paul Minnesota