Abstract:This paper studied the element cycle of a 35-year-old %Quercus acutidentata% (Fagaceae) forest in Baotianman Natural Reserve, Neixiang county, He‘nan Province. The forest is a secondary vegetation type in the northern deciduous forest region. Investigations were carried out in a 20×20 m2 plot in which trees were measured and ranked according to Kraft (1884) method during 1993~1995. The stand biomass was determined and the element contents of N, P, K, Ca, Mg, Fe, Na, Mn, Cu and Zn were analyzed in trees, shr...