科尔沁沙地沙漠化过程中土壤有机碳含量变化特征及影响因素

闫蒙, 王旭洋, 周立业, 李玉强

Characteristics and influencing factors of soil organic carbon in the process of desertification in Horqin Sandy Land

Meng Yan, Xuyang Wang, Liye Zhou, Yuqiang Li

表6 不同土层土壤有机碳含量与土壤因子的一元线性回归方程

Table 6 Univariate linear regression equation between soil organic carbon content and soil factors in different soil layers

土层深度/cm 回归方程 R2 F P 0—10 y=8.595STNC+0.118 0.778 484.174 <0.01 y=45.435STPC-0.074 0.612 218.398 y=0.011EC+0.126 0.995 48.399 y=-0.088Fsa+0.954 0.145 24.465 y=0.162Vfs+0.273 0.096 15.647 y=0.255Scl+0.130 0.339 71.625 10—20 y=15.193STNC+0.154 0.363 79.598 y=37.905STPC+0.121 0.239 44.452 y=-0.147SBD+0.692 -0.002 0.659