【摘要】 本文于1988年对帽儿山林场老山人工林实验站21年生兴安落叶松[Larix gmelini (Rupr) Rupr.]人工林群落生物量、生物量增量、枯死量、凋落量及凋落物层现存量等进行了测定和研究,在此基础上,推算了群落净初级生产力。结果表明:落叶松人工林群落的生物量为145.615t/ha,其中乔、灌、草各层的植物量分别为142.358t/ha、2.686t/ha和0.571t/ha;落叶松林净生产量为13.861t/ha·a,其中乔、灌、草各层净生产量分别为12.539t/ha·a,0.874t/ha·a和0.448t/ha·a;林分立枯量为3.122t/ha,年凋落量为3.577t/ha,林地凋落物层现存量为23.20t/ha。与其它森林植物群落相比,落叶松人工林群落具有较高的生物生产力。更多还原

【Abstract】 The standing crop of biomass, annual increment of biomass, annual litterfall and stand crops of litter on forest floor of twenty-one-year Dahurian larch plantation community have been determined and studied in Laoshan plantation experimental station of Moer shan Forest Farm. The estimated total living plant biomass of Dahurian larch plantation community was 145 615 t/ha, in which the biomass of tree layer undergrowth and herb layer was 142 385t/ha, 2686 t/ha and 0.571t/ha respectively. The net primary productivity of the community was 13, 861 t/ha. a, in which the net primary production of treeslayer, was 12 539 t/ha. a. The standing dead biomass, annual litte rfall and standing cropd of litter were 3 122 t/ha, 3 577t/ha and 23 190 t/ha respectively. Compared with other plant communities, larch plantation community possessed relatively higher productivity.更多还原