Studies on the Productivity of the Secondary Castanopsis fargesii and Schima superba Stands in Jiangxi Province

This paper deals with the growth characteristics and productivity of the secondary Castanopsis fargesii and Schima superba stands in Jiangxi Province in 1987～1995. The results showed that,in the 37-year-old stands,the average stand volume at high quality site was 300.0,284.2 m3/hm2 at middle quality site,and 242.7 m3/hm2 at lower quality site,the growth of DBH decreased as the density of stands increased;the growth of diameter increased as the stand grade went up. Therefore,the cultivation of big diameter grade timber stands is necessary,intermediat cutting interval is 8 years,and light thinning is appropriate.