摘要
系统研究了长白山阔叶红松林细根生物量、生产力、年周转率及其在净生产力分配中的作用,生物量调查结果表明,阔叶红松林活细根的生物量为5049kg.ha^(-1),死细根生物量的平均值为1883kg.ha^(-1),细根的年周转率为0.96,年生产量为4860kg.ha^(-1),约占总净初级生产力的19.40％,年死亡量为2343kg.ha^(-1),相当于阔叶红松林枯枝落叶年凋落量的60％,由此提出了森林凋落物应包括枯枝落叶和根系凋落物的论点。
Biomass productivity and annual turnover of fine roots in a broad-leaved Korean pine forest of Changbai mountain and their role in the allocation of net productivity are studied in this paper. The biomass of living fine roots is 5049,and that of dead ones is 1883kg. ha^(-1) on an average. Annual turnover of fine roots is 0.96. Their annual production is 4860kg. ha^(-1). yr^(-1),being 19. 40％ of total net productivity,and annual mortality is 2344kg. ha^(-1),corresponding to 60％ of annual litter fallen. It is concluded that forest litter should include above -and under -ground litters.
出处
《应用生态学报》
CAS
CSCD
1993年第3期241-245,共5页
Chinese Journal of Applied Ecology
关键词
细根
生物量
红松
枯落物
Fine roots, Biomass, Production, Fine roots turnover, Forest litter.
