Understanding the Spatial Heterogeneity of CO₂ and CH₄ Fluxes from an Urban Shallow Lake: Correlations with Environmental Factors

Table 3

Pearson and Spearman analysis between flux and environmental factors .

	Correlation	T	Tw	Wind	Wf	pH	DO	ORP	COND	Tur	TN	N-	N-	N-		OM	TNs	N-s
CO2	Pearson			0.352	0.413	−0.354	−0.262	−0.168	−0.152	0.093			0.136	0.371			0.204	0.287
	Spearman		0.431	0.319	0.320		−0.436	−0.032	−0.081	0.191			0.116	0.223
CH4	Pearson	0.363	0.362	0.206	−0.081	−0.264			−0.172		0.306	0.354	−0.158	0.027	0.424		0.217	0.280
	Spearman	0.364	0.402	0.113	−0.167	−0.386		−0.329	−0.236		0.196	0.277	−0.069	−0.040	0.391		0.320	0.384

Note.Indicating a significant correlation at the 0.01 level; indicating a significant correlation at the 0.05 level; T: atmospheric temperature; Tw: water temperature; wind: wind velocity; Wf: water flow rate; DO: dissolved oxygen; ORP: oxidation-reduction potential; COND: conductance; Tur: turbidity.