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. 2014 Mar 11;9(3):e91528. doi: 10.1371/journal.pone.0091528

Table 5. Correlations between selected water quality parameters and environmental variables using Pearson analysis.

	NH₄ ⁺-N	SRP	COD_Mn	NO₃ ^–N	Cl⁻	Na⁺	Mg²⁺	K⁺
forest	−0.138	−0.117	−0.387^*	−0.716^**	−0.384^*	−0.495^*	0.132	−0.314
cropland	−0.254	−0.209	0.024	0.444^*	−0.112	0.132	−0.554^**	−0.176
developed land	0.769^**	0.777^**	0.807^**	0.441^*	0.681^**	0.593^**	0.376	0.830^**
orchard	0.095	0.155	0.383^*	0.630^**	0.210	0.395^*	0.002	0.254
PD	0.140	0.168	0.403^*	0.687^**	0.328	0.475^*	−0.241	0.277
SHDI	0.274	0.242	0.525^**	0.741^**	0.477^*	0.593^**	−0.124	0.439^*
LPI	−0.139	−0.108	−0.312	−0.651^**	−0.328	−0.435^*	0.114	−0.294
Pop_density	0.777^**	0.701^**	0.633^**	0.457^*	0.879^**	0.709^**	0.285	0.898^**
GDP	0.754^**	0.799^**	0.706^**	0.102	0.406^*	0.261	0.552^**	0.574^**
GDP1	0.246	0.147	0.286	0.782^**	0.440^*	0.482^*	0.036	0.459^**
GDP2	0.763^**	0.791^**	0.637^**	0.010	0.374	0.188	0.589^**	0.543^**
GDP3	0.645^**	0.740^**	0.760^**	0.168	0.377	0.326	0.429^*	0.527^**
Slope_std	0.501^*	0.368	0.381	0.369	0.468^*	0.340	0.131	0.472^*
Geology 1	0.490^**	0.461^*	0.116	−0.301	0.108	−0.264	0.684^**	0.178
Geology 2	−0.278	−0.144	0.022	−0.243	−0.198	0.045	−0.468^*	−0.220

*indicates significant at p<0.05;

**indicates significant at p<0.01.