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樟子松(Pinus sylvestris var.mongolica)作为华北地区重要的造林树种,其生长及固碳特征的研究对樟子松人工林经营有着重要的意义。该文通过2006–2016年10年的定点观测,研究河北省塞罕坝林场樟子松人工林的生长和固碳特征。结果表明:10年间樟子松人工林胸径年增长4.19%,树高年增长1.97%;林木死亡率8.39%。该林分2006年和2016年的碳储量分别为59.04和109.64 t×hm~(–2),即10年间固碳量为50.6 t×hm~(–2),固碳年平均增长8.57%。不同径级的林木固碳能力有差异,0–10 cm径级的林木总株数占39.1%,但固碳量仅占8.3%;10–20 cm径级的林木株数占59.2%,固碳量占比达87.1%。结果显示樟子松人工林具有较大的固碳潜力,未来评估林分生态效益与固碳潜力时,应充分考虑林分的结构特征。
Pinus sylvestris var. Mongolica is an important tree species in North China. The study on its growth and carbon sequestration plays an important role in the management of Pinus sylvestris var. Mongolica plantation. This paper studies the growth and carbon sequestration of Pinus sylvestris var. Mongolica plantations in Saihanba forestry center in Hebei Province through the fixed point observation from 2006 to 2016. The results showed that the DBH of Pinus sylvestris var. Mongolica increased by 4.19% and the tree height increased by 1.97% and the forest mortality rate was 8.39%. The carbon stocks of the stand in 2006 and 2016 were 59.04 and 109.64 t × hm -2, respectively, that is, the carbon sequestration was 50.6 t × hm -2 in 10 years and the average annual carbon sequestration was 8.57%. The carbon sequestration ability of trees with different diameter ranks was different. The total number of trees with 0-10 cm diameter accounted for 39.1%, but the carbon sequestration accounted for only 8.3%. The number of trees with 10-20 cm diameter accounted for 59.2% Accounting for 87.1%. The results showed that the Pinus sylvestris plantation has great potential for carbon sequestration. In the future, when evaluating the ecological benefit and carbon sequestration potential of the stands, the structural characteristics of the stands should be fully considered.