Table 1 Physical and chemical parameters of Bahe River Basin
Type | Parameter | Mean | Standard deviation | Standard error | Minimum | Maximum | Range |
|---|---|---|---|---|---|---|---|
Water | pH | 8.47 | 0.57 | 0.13 | 7.05 | 9.12 | 2.07 |
DO (mg/L) | 9.06 | 1.70 | 0.40 | 6.13 | 12.21 | 6.08 | |
T (°C) | 28.88 | 2.50 | 0.59 | 23.00 | 32.00 | 9.00 | |
COD (mg/L) | 45.49 | 11.41 | 2.69 | 26.10 | 68.27 | 42.17 | |
ORP (mV) | 179.40 | 31.84 | 8.22 | 103.00 | 222.00 | 119.00 | |
EC (mS/cm) | 0.46 | 0.11 | 0.03 | 0.33 | 0.67 | 0.34 | |
NTU | 91.43 | 81.38 | 21.01 | 14.40 | 323.00 | 308.60 | |
TDS (g/L) | 0.30 | 0.07 | 0.02 | 0.22 | 0.43 | 0.21 | |
TN (mg/L) | 2.84 | 0.64 | 0.15 | 1.94 | 4.12 | 2.18 | |
\({\text{NH}}_{4}^{ + }\)-N (mg/L) | 0.40 | 0.36 | 0.08 | 0.15 | 1.05 | 0.90 | |
TP (mg/L) | 0.01 | 0.02 | 0.00 | 0.00 | 0.06 | 0.06 | |
Sediment | MC (%) | 24.49 | 11.42 | 11.09 | 5.75 | 45.82 | 40.06 |
OM (%) | 3.75 | 1.51 | 1.47 | 0.80 | 6.27 | 5.47 | |
TN (mg/kg) | 523.76 | 514.87 | 500.37 | 24.06 | 1812.13 | 1788.07 | |
TP (mg/kg) | 734.43 | 225.90 | 219.54 | 215.91 | 1177.27 | 961.36 |