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为了解人工林土壤有机碳剖面变化特征,利用元素分析仪对土壤化学元素进行了测定,结果表明,土壤剖面中C、N、H元素含量随剖面深度增加而下降的趋势,C、N、H三元素含量主要集中在土壤表层及亚表层。土壤C/N和C/H的变化趋势与C、N、H三元素含量变化特征基本一致,其最高值也均出现在土壤表层。研究结果说明,研究区林地土壤表层芳化度较高,稳定性较高,而剖面深层土壤的芳化度和稳定性相比于表层都有所降低。
In order to understand the characteristics of soil organic carbon profile in plantations, elemental analysis was used to determine the soil chemical elements. The results showed that the contents of C, N and H in soil profile decreased with the increase of depth of cut. C, N, H Three elements are mainly concentrated in the soil surface and subsurface. The trend of soil C / N and C / H was basically consistent with that of C, N and H, with the highest values all appearing on the soil surface. The results showed that the soil surface aromaticity of forest land was higher and stability was higher in the study area, while the degree of aromatization and stability of soil in deep section of the study area was lower than that of the surface layer.