Carbon concentration and carbon storage in different components of natural Quercus

Abstract

黄土高原碳储量及碳密度的准确估计对全球碳失汇的研究有重要贡献。通过研究黄土高原子午岭林区辽东栎天然次生林不同组分的碳含量及碳储量,为准确估算黄土高原森林植被碳储量及碳密度提供依据。结果表明:辽东栎中幼林、近熟林和成熟林乔木干、皮、枝、叶、根的碳含量分别为44.16%～47.01%、44.09%～45.50%、43.17%～46.25%、44.67%～46.36%和38.93%～41.10%;灌木层叶、枝、根的碳含量分别为44.39%～46.26%、30.19%～48.95%和28.06%～40.13%;草本层地上、地下的碳含量分别为28.38%～45.27%和24.53%～46.06%;枯落物层的碳含量为32.10%～32.90%。3个林龄段乔木层碳储量依次为32.78、35.51和43.79t&middot;hm-2,灌木层碳储量依次为3.31和1.72、0.87t&middot;hm-2,草本层碳储量为0.32、0.77和0.64t&middot;hm-2,枯落物层碳储量为6.03、3.14和4.37t&middot;hm-2。在3个林龄段,辽东栎群落的碳储量依次为42.45、41.41和49.67t&middot;hm-2。由此可知,在子午岭区,辽.</span