摘要
通过对长白山5种主要森林群落类型细根现存生物量的研究发现:不同森林群落细根生物量有较大差别.其中,阔叶红松林细根生物量最高,达到5.967 7t/hm2,其次为云冷杉林(4.630 5t/hm2)、岳桦林(4.372 4t/hm2)、白桦林(4.000 8t/hm2)、山杨林(2.869 9t/hm2);不同森林群落死活细根的比率也不同,云冷杉林死细根含量所占比例最高,达40%以上,而其他群落类型相对较低,死细根所占比率都在20%以下;从不同土壤层次中细根所占的比例看,红松阔叶林在0～10cm土壤中细根含量占总根量的60%以下,其他则都在70%以上,其中白桦林最高,达到80%以上.
Fine root biomass of five main forestry communities in Changbai Mountain was studied in this paper. The results showed that the biomass of fine root in the different forestry communities had obvious difference. Fine root biomass of broad-leaved Korean pine forest(BLKPF) was the highest, reached to (5.967 7 t/hm^2), Spruce-fir forest(SF)((4.630 5 t/hm^2)), Subalpine Birch forest(SBF)((4.372 4 t/hm^2)), Asian White Birch forest(AWBF)((4.000 8 t/hm^2)) and David Poplar forest (DPF)((2.869 9 t/hm^2)). The rate of dead fine root biomass and living fine root biomass in the different forestry communities were also different. The proportion of dead fine root biomass of SF was the highest, reached over 40%, however others were relatively low, below 20%. The rate of fine root biomass of different layers showed that fine root biomass in 0～(10 cm) soil layer was under 60% of the total fine root biomass in BLKPF and others were over 70%. The rate of AWBF reached its top point, over 80%.
出处
《北华大学学报（自然科学版）》
CAS
2004年第5期458-461,共4页
Journal of Beihua University（Natural Science）
基金
中国科学院知识创新重大项目子课题(KZCX1 SW 01 03 02)
吉林省生态恢复与生态系统管理省部共建国家重点实验室开放基金项目(DS2004 12)
关键词
长白山
细根
生物量
森林群落
Changbai Mountain
Fine root
Biomass
Forest community
