Site classification of the eastern forest region of Daxing'an Mountains

摘要

Based on the plot data from the investigation and the theory of forest ecology and ecological system, the site classification of the eastern forest region of Daxing'an Mountains was made by mean of mathematical method. The main factors were slope, thickness of soil layer, slope position and slope aspect. Grades of slope were used as the division standard for site type group. The slope aspect, slope position and thickness of soil layer were used as the division standards for site type. Altogether 7 site type groups and 15 main site types were deter- mined the region. It provided reliable fundamental basis for the reasonable management and planting design in the area.