Effect of different management modes on the soil physical and chemical properties of secondary Pinus massoniana forest

Taken the secondary Pinus massoniana forest in Erfangping Village of Cili County as research object,the soil physical and chemical properties of secondary Pinus massoniana forest under different management modes were compared. The results showed that,after one year of management on secondary Pinus massoniana forest,the physical and chemical properties of soil with treatment II( stand density 900 plant / hm2) were improved,which was manifested in the increase of soil nutrient content,especially the large increase of soil available nutrient content. While all indices of soil physical and chemical properties under conventional management exhibited a progressive decrease. This demonstrated that rational management played a positive role to maintain and improve soil fertility,and low or high stand density was not good for improvement of soil structure and cycle and accumulation of nutrient.