Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education School of Forestry Northeast Forestry University Harbin 150040 P.R.China;
Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education School of Forestry Northeast Forestry University Harbin 150040 P.R.China;
Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education School of Forestry Northeast Forestry University Harbin 150040 P.R.China;
Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education School of Forestry Northeast Forestry University Harbin 150040 P.R.China;