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红松阔叶林是北方森林系统的一种典型类型,在北方森林结构与功能中占有重要的地位。为了解红松阔叶林土壤有机碳空间分布规律,试验采用样线法调查了红松阔叶林土壤有机碳在剖面层次、坡向以及海拔高度方面的异质性。结果表明,红松阔叶林土壤有机碳存在明显的剖面、坡位垂直分异性和坡向水平分布异质性。随剖面深度加深有机碳含量逐渐减少,腐殖质层土壤有机碳对剖面土壤有机碳贡献率达44.2%~68.4%;土壤有机碳含量受山体坡位和坡向综合影响,阳坡腐殖质层和淀积层有机碳含量分布按坡位由高到低为:坡中部>坡上部>坡下部,而阴坡腐殖质层有机碳含量则在坡下部最高,坡中部最小;阳坡有机碳密度表现为坡中部>坡下部>坡上部,而阴坡有机碳密度随海拔升高呈显著下降趋势。
Korean pine broad-leaved forest is a typical type of forest system in the north, occupies an important position in the northern forest structure and function. To understand the spatial distribution of soil organic carbon in korean pine-broadleaved forest, the heterogeneity of soil organic carbon in korea pine broad-leaved forest in section, aspect and altitude was investigated by the sample-line method. The results showed that the soil organic carbon in the Korean pine broadleaved forest had obvious profile, vertical difference of slope position and heterogeneity of slope horizontal distribution. The content of soil organic carbon in the humus layer contributed 44.2% -68.4% of the soil organic carbon in the profile with the deepening of the profile depth. The content of soil organic carbon was affected by the combination of slope position and aspect, The distribution of organic carbon in the slope is from high to low in the slope position: the middle part of the slope> the lower part of the slope, while the organic carbon content of the humus layer in the shady slope is the highest in the lower part of the slope and the smallest in the middle part of the slope; > The lower part of the slope> the upper part of the slope, while the organic carbon density of the shady slope showed a significant decrease with the elevation.