论文部分内容阅读
为了探讨过熟杉木插条林的生物量特点,本文对广西苍梧县白南林场44年生杉木插条林分的生物量进行了调查测定。结果表明,上、下坡林分总生物量分别为130.146吨/公项和178.683吨/公顷,差异显著;从各生长级生物量的分配看,经济系数随生长级下降而递增,是这个杉木过熟林反映出的一个特点;立地条件较差的上坡样地,杉木干、叶比例明显失调,提出了年龄增长因立地不同对杉木生长发育影响的讨论意见。
In order to investigate the biomass characteristics of over-mature Chinese fir cuttings, the biomass of 44-year-old Chinese fir cuttings in Bai’nan Forest Farm, Cangwu County, Guangxi was investigated in this paper. The results showed that the total biomass of the upper and lower reaches of the forest was 130.146 tons / km and 178.683 tons / ha, respectively, with significant differences. From the perspective of the distribution of biomass, the economic coefficient increased with the decline of growth level. Over-mature forest reflects one of the characteristics; poor site conditions uphill plots, the proportion of dry and leaf of Chinese fir is obviously imbalanced, and put forward the opinions on the influence of different age on the growth and development of Chinese fir.