We gratefully acknowledge the financial supports by the National Natural Science Foundation of China (J1210053), and Program for Importation of International Advanced Forestry Science and Technology, National Forestry Bureau (2012-4-06).
We gratefully acknowledge the financial supports by the NationalNatural Science Foundation of China (J1210053), and Program for Importationof International Advanced Forestry Science and Technology,National Forestry Bureau (2012-4-06).