摘要
对落叶松进行抚育间伐,10 a后,间伐强度30％的林分总生物量的增值率最大,比对照区高74.8％,而且随林分密度增大总生物量与灌木层生物量也加大.当林分密度达到1 365株/hm2时.生物量达到最大值,以后有下降趋势。本文还制定了落叶松各年龄阶段不同立地指数、经营密度生物量表。
After 10 years of tending felling to larch stands , it shows that maximum increment percent of total biomass appears in treated stand by 30% thinning density(higher 74.8% then check plot). And total biomass and shrub layer biomass may grow with increase of the stand density. Tne increment could culminate in 1 365 trees·hm-2 and then begin to descend. Biomass tables of larch stands in different ages site index and management density were worked out in this paper.
出处
《吉林林业科技》
2003年第5期21-24,共4页
Journal of Jilin Forestry Science and Technology
