抚育间伐对兴安落叶松天然林乔木层碳储量的影响

Effect of Thinning on Tree Layer Carbon Storage of the Natural Larix gmelinii Forest

[目的]研究抚育间伐对兴安落叶松(Larix gmelinii)天然林乔木层碳储量的影响。[方法]以大兴安岭林区70年兴安落叶松天然林为研究对象,采用测树学方法、样地调查法等,研究经过2次平均株数强度为38%的抚育间伐后林分乔木层碳储量的变化。[结果]兴安落叶松天然林乔木层各器官碳储量从大到小依次为干、根、枝、叶。兴安落叶松林木个体平均含碳率为49.48%,抚育间伐使兴安落叶松天然林乔木层碳储量显著增加(P<0.05)。[结论]该研究可为大兴安岭兴安落叶松天然林抚育提供技术支撑。

[ Objective ] To study the effect of thinning on tree layer carbon storage of the natural Larix gmelinii forest. [ Method ] 70 a natural Larix gmelinii forest was as the test object, and 38% thinning was taking by 2 times in this forest, the change of carbon storage in tree layer after thinning was studied. [ Result ] The results showed that the carbon storage of each organ from large to small was stem, root,branch and leaf. The individual tree average carbon content of Larix grnelinii was 49.48%. The carbon storage of tree layer was higher after forest thinning （ P 〈0.05 ）. [ Conclusion] The research can provide technical support for the natural forest tending of Larix gmelinii in Great Xing＇ an Mountains.