The results showed that with the increasing of human-induced disturbance intensity, the amounts of small soil particle (silt and clay) and large aggregate decreased, and the amounts of soil micro-aggregate and natural soil particle increased; soil porosity decreased in the surficial soil,especially, in which the large porosity significantly decreased;.

We want to know the quantitative relation of the disturbance intensity and the forest structure.

Spatial Heterogeneity of Soil Moisture, Temperature and Nutrients Following Harvesting in Secondary Forests;

Under the condition of the Non_cutting disturbance and the different cutting disturbance the change characteristics of the understorey plant life form spectrum,dominant synusia and ecological group of Larix gmelini community in the cold temperate coniferous forest region were studied.