TABLE 1.

Model results of multivariate regressions among soil nitrogen: phosphorus (N:P) ratio soil organic carbon (SOC) content, soil N content, and soil pH at 0–100 cm in the Tibetan Plateau shrublands.

Types	Eqn	r 2	P
Alpine shrublands	Soil N:P ratio = 0.61 × Soil N + 0.03 × SOC + 0.65 × Soil pH − 4.12	0.76	< 0.001
Desert shrublands	Soil N:P ratio = 1.32 × Soil N – 0.01 × SOC − 0.04 × Soil pH + 0.56	0.89	< 0.001
Total shrublands	Soil N:P ratio = 0.95 × Soil N + 0.01 × SOC + 0.51 × Soil pH − 4.12	0.90	< 0.001