Soil properties of healthy,sub-healthy and unhealthy Pinus yunnanensis secondary forest were measured and their correlation with the health conditions of Pinus yunnanensis forest were analyzed.The results revealed that,the soil water content,bulk density,porosity,sand content,cosmid content,CEC and radily available K content changed regularly with the health condition changes of Pinus yunnanensis forest.Correlation analysis revealed that,there were positive correlation between soil water content,porosity,cosmid content,CEC,radily available K content and health conditions of Pinus yunnanensis forest;and negative correlation between bulk density,sand content,meal content and health conditions of Pinus yunnanensis forest.By stepwise regression analysis,the regression models about health conditions of Pinus yunnanensis forest and soil properties were established.
