摘要
以科尔沁沙地杨树人工林为研究对象，实地测定了造林5年、8年、18年杨树人工林的树木生物量、枯落物生物量、草本生物量和根系生物量，并分析其特征。结果表明：5年人工林地上总生物量和0—60cm土层根系生物量分别为725kg／667m^2和260．66kg／667m^2；8年的分别为1086．62kg／667m^2和147．27kg／667m^2；18年的分别为1690．70kg／667m^2和297．75kg／667m^2。同时，随着林龄的增长，树木生物量、枯落物生物量逐渐增加，而草本生物量和根系生物量占林木总生物量的比例有所下降。
Forest biomass is an important content for studying carbon sink. Taking poplar plantation in Horqin Sandy Land as research object, tree biomass, litter biomass, herb biomass and root biomass of 5 -year, 8 -year and 18 -year poplar plantation are measured, and their characteristics are analyzed. The results show： the aboveground biomass of 5 - year poplar plantation and root biomass at 0 - 60 cm soil layer are 725 kg/667 m^2 and 260. 66 kg/ 667 m^2 seperately ; those of 8 - year plantation are 1 086.62 kg/667 m^2 and 147.27 kg/667 m^2 seperately ; those of 18 -year plantation are 1 690. 70 kg/667 m^2 and 297.75 kg/667 ms seperately. With increasing of forest age, tree biomass and litter biomass also increase, but herb biomass and the ratio of root biomass to tree biomass decrease somewhat.
出处
《内蒙古林业科技》
2010年第1期11-14,共4页
Journal of Inner Mongolia Forestry Science and Technology
基金
国家森林碳汇项目评价指标体系研究(内蒙古实地部分)
