According to the analysis on the characteristics of rainfall and penetrative rainfall in Larix gmelinii virgin forest and Successive Cutting Forest in the north of the Greater Xing an Mountains,it presents a power function between the interception of crown and the rainfall outside the stand;the interception ability of the two kinds of woodland are basically same.

The paper investigates the chemical elements background value of the larix gmelinii in the Great Xinganling Mountains permafrost land, and analyzes its distribution characteristics of and influencing factors to different slope aspect,slope position and soil depth in virgin forest permafrost land, then compares with the soil background value of other.