通过对银杉 ( Cathaya argyrophylla)生长规律的研究 ,发现银杉早期生长需要一定的荫蔽 ,但过分荫蔽导致植株生长缓慢而逐渐死亡。银杉的整个生长过程可分为 4个时期 ,在 30～ 4 0 a内具有明显的胸径生长盛期。银杉单株地上部分生物量的 60 %分布在 1 /2树高以下 ,树干材重量占全部地上部分生物量的比重超过 2 /3。银杉种群地上部分生物量在不同群落类型间差别很大 ,介于 330 0 0～ 1 1 70 0 0 kg.hm- 2 。 Through the study on the growth regulation of Cathaya argyrophylla, it was found that the early growth of the silver fir requires some shade, but the excessive shade causes the plant to grow slowly and gradually die. The whole growth process of silver fir can be divided into four periods, with a significant DBH growth period within 30 ~ 40 days. Sixty percent of the aboveground biomass of the individual was distributed below 1/2 of the tree height, and the proportion of the trunk biomass to the aboveground biomass exceeded 2/3. The aboveground biomass of the silver fir population varied widely among different community types, ranging from 330 0 to 1 170 000 kg · hm -2.