中天山北坡垂直带土壤有机碳密度分布特征

以乌鲁木齐河流域为重点研究区，利用实测典型土壤剖面特征数据估算土壤有机碳密度，就剖面有机碳和表层有机碳之间，剖面有机碳、表层有机碳和海拔高度之间，土壤剖面有机碳密度与发生层深度之间以及不同土壤类型土壤有机碳密度的分布特征进行相关分析，结果表明:在中海拔区域，土壤有机碳的密度最大且含量最高。发生层越厚，土壤的发育程度就越高，土壤有机碳密度也就越大，有机碳的含量就越高。全剖面和表层土壤有机碳密度值分别为46.91，13.95 kg/m²。不同土壤类型的土壤有机碳密度存在着显著差异。

Distribution Characteristics of Soil Organic Carbon Density on the Northern Slope in the Middle Section of Tianshan Mountainous

We took Urumqi River region as the study site, and used the measured data to estimate typical soil profile characteristics of soil organic carbon density between the surface on the cross-section of organic carbon and organic carbon, organic carbon between the cross-section, surface organic carbon and altitude, analyzed the correlation between soil organic carbon density and the development layer of cross-sectional depth and the distribution of different soil types of soil organic carbon density. The results showed that soil organic carbon density and organic carbon content were highest at the middle altitude. The thicker the development layer was, the higher the degree of development of the soil was, the greater the density of soil organic carbon is, the higher organic carbon content is. The whole section and surface soil organic carbon density values were 46.91 kg/m² and 13.95 kg/m², respectively. Soil organic carbon densities are significant different among different soil types.