. 2017 May 8;12(5):e0176305. doi: 10.1371/journal.pone.0176305

Table 3. Pearson correlation and path analysis between N₂O fluxes and soil NH₄⁺-N concentrations, NO₃^--N concentrations, water-filled pore space (WFPS), and soil temperature at the 5 cm depth (T_5cm).

Independent variables	Pearson correlation coefficients	Direct path coefficients	Indirect path coefficients
Independent variables	Pearson correlation coefficients	Direct path coefficients	NH₄⁺-N	NO₃^--N	WFPS	T_5cm	SUM
NH₄⁺-N	0.196^*	0.139	–	0.081	0.013	-0.036	0.057
NO₃^--N	0.628^***	0.563	0.020	–	0.040	0.006	0.066
WFPS	0.288^***	0.162	0.011	0.139	–	-0.023	0.126
Soil temperature	0.108	0.144	-0.035	0.024	-0.026	–	0.037

* and ***denote significance at the 0.05 and 0.001 probability levels-2-tailed, respectively (n = 162).

Table 3. Pearson correlation and path analysis between N2O fluxes and soil NH4+-N concentrations, NO3--N concentrations, water-filled pore space (WFPS), and soil temperature at the 5 cm depth (T5cm).