Abstract:The accumulation distribution and biological cycling of nine nutrient elements (N、P,K,Ca、Mg,Fe,Mn,Zn、Cu) in a natural secondary Quercus fabri forest in Yuanling,Hunan,was studied.The results indicated that the total accumulation of the nine nutri-ent elements in the ecosystem is 192.08t/hm2.In arbor layer,the annual absorbtion is 0.179t/hm2·a。the annual return is 0.125t/hm2·a,and the average cycling rate is 0.7.This research could provide base data for culturing artifieal mixed forests.