红松人工林生物量碳密度

在黑龙江省尚志市帽儿山镇东北林业大学老山人工林实验站,20年生红松人工林与天然白桦林和蒙古栎混交林、42年生红松人工林与天然白桦林和蒙古栎混交林中进行了生物量碳密度的测定,结果说明,3种林分类型属蒙古栎红松混交林碳密度最大,为95.24 t·hm-2,超过红松人工纯林13.10%,与桦树红松林持平,同时也做了不同林龄生物量碳密度的比较,属42年生生物量最多,超过20年生的170.13%~276.71%,充分说明,不同林分类型和不同林龄的林分,是影响生物量碳密度的主要因子。在各组分的生物量(组织器官)碳密度差异显著,属树干生物量碳密度最多,约占碳密度总量的48.76%~62.34%,其次为根生物量碳密度也比较多,以各组分生物量碳密度大小排序为树干、根、叶、枝、果。

Biomass Carbon Density of Korean Pine Plantations

We determined the biomass carbon density(BCD)of 20-and 42-a Pinus koraiensis plantation,natural forest of birch and Mongolia oak mixed one in Northeast Forestry University Laoshan Forest Experiment Station, located in Maoershan Town,Heilongjiang Province.The three forests,the BCD of Mongolia oak-red pine mixed forest(95.24 t· -2)was 13. 10%higher than that of Korean pine plantations,and was equal to birch-Korean pine forest.The BCD of42 years old was 170.13%-276.71%higher than that of 20 a.It can be conclude that forest type and age class are the most important factors influencing BCD.The BCD among various tree organs showed significant difference(P<0.05), and that in stem was the highest,accounting for 48.76%-62.34%of the total carbon density,followed by root,leaf,branch,and fruit.