疏勒河源冻土区高寒草甸土壤碳氮含量特征

贾映兰, 吴明辉, 魏培洁, 赵建中, 高雅月, 陈生云

Characteristics of soil carbon and nitrogen contents in permafrost region of the Shule River Headwaters

Yinglan Jia, Minghui Wu, Peijie Wei, Jianzhong Zhao, Yayue Gao, Shengyun Chen

表4 环境因子与SOC、TN及C/N的逐步回归分析

Table 4 Stepwise multiple regression analyses of environmental factors and SOC， TN and C/N

因变量 回归方程 调整后R2 P 土壤有机碳SOC 剖面 SOC=3.01×SM+0.002×BGB-46.93 0.767 <0.001 季节 SOC=0.005×BGB+10.31 0.504 <0.001 土壤全氮TN 剖面 TN=0.34×SM+0.0001×BGB+0.001 AGB-5.60 0.815 <0.001 季节 TN=0.0004×BGB+0.98 0.557 <0.001 碳氮比C/N 剖面 — — — 季节 C/N=0.001×BGB+9.23 0.245 0.013