期刊论文

中文

林业科学

1001-7488

2008

44

5

17-23

10.3321/j.issn:1001-7488.2008.05.006

2002BA901A42:科技部科技攻关计划 :西藏林芝国家重点野外科学观测研究站项目

本校为第一机构

采用样地调查及标准样木收获法,研究西藏色季拉山原始冷杉林乔木层、灌木层、草本层、死亡木、凋落物层的生物量及其分配规律.结果表明:冷杉林生态系统总的生物量为424.52 t·hm~(-2),其中乔木层生物量最高,为300.02 t·hm~(-2),占总生物量的70.67%,其次是死亡木111.53 t·hm~(-2),占总生物量的26.27%,灌木层与草本层生物量较低,分别为2.59和0.18 t·hm~(-2),所占比例分别为0.61%和0.04%.乔木层中,树干、皮、枝、叶与根的生物量分别为194.59、33.96、20.22、12.39与38.48 t·hm~(-2).随着树木生长,树干生物量所占比例增大,而枝、叶比例减小.

Based on the data collected from a standard permanent plot of a primeval Abies georgei var. smithii forest in Sejila Mountain in Tibet plateau, the biomass and its distribution were investigated by using harvest method. The results showed that the total vegetation biomass of A. georgei var. smithii forest was 424.52 t·hm^-2, of which overstory trees contributed the largest proportion （70.67%） and amounted to 300.02 t·hm^-2 . The biomass of dead wood ranked the second with amount of 111.53 t·hm^-2 that accounted for 26.27 % of the total bio...