Abstract:Studies on soil biological activities, chemical properties and structures ofsoil, constituents of pores and water status have been carried out in differentAgroforastry patterns, including Chinese fir-litsea cubeba (A), Chinese fir-litsea cubeba-Soybean (B), Chinese fir-litsea cubeba-Tobacco (C) and pureChinese fir forest. The results indicuted that the resultes showed that the top-soil structures of pattern B and C became poor, the content of soil nutrientsdeclined, soil biological activities decreased, but the ripening level of subsoilraised. In order to maintain the soil fertility of cultivated land, Pattern B andC would reduce the strength of cultivation, shoten the period of interplantingtimes, and appropriately increase the amount of the fertiliers of N and P Pa-ttern A had a good ability to modifing soil. Thus it would be a good agro-forestry pattern for Chinese fir in south forest areas of China.