Forestry College,Northeast Forestry University,Harbin 150040,China;
Forestry College,Shanxi Agricultural University,Taigu 030801,China;
Forestry College,Northeast Forestry University,Harbin 150040,China;
Forestry College,Northeast Forestry University,Harbin 150040,China;
Forestry College,Northeast Forestry University,Harbin 150040,China;
Fraxinus mandshurica; fine root; biomass; root length density (RLD); specific root length (SRL); seasonal dynamics;