Figure 2.

Differences of soil physical and chemical properties in different soil layers of different forest land types. SD, soil bulk density; SP, soil porosity; pH, pH value; SOM, soil organic matter; STN, soil total nitrogen; STP, soil total phosphorus; STK, soil total potassium. Above the error line, different lowercase letters indicate significant differences between different soil layers; different capital letters indicate that there are significant differences among different forest land types. I, broad-leaved forest; II; coniferous forest; III, mixed coniferous and broad-leaved forest; IV, bamboo forest; V, shrub forest. The same below.