Table 1 Summary of the water parameters of the 27 main tributaries of TGRC

131.69 ± 112.87^b

15.96 ± 1.84^b

8.31 ± 0.48^b

10.53 ± 25.06^c

9.00 ± 2.04^b

145.85 ± 45.44^a

134.21 ± 41.85^a

57.64 ± 49.24^a

22.35 ± 3.43^d

8.24 ± 0.28^a

5.82 ± 10.26^b

8.82 ± 1.89^b

143.85 ± 100.6^a

305.09 ± 141.79^c

136.64 ± 52.03^c

20.02 ± 2.87^c

8.23 ± 0.38^ab

7.76 ± 10.21^c

7.26 ± 1.49^a

165.75 ± 22.62^b

288.23 ± 78.94b^c

239.69 ± 73.18^d

9.86 ± 3.30^a

8.26 ± 0.32^ab

1.15 ± 2.03^a

7.58 ± 0.77^c

154.12 ± 38.02^b

285.86 ± 66.19b^c

163.955

420.838

5.844

174.943

119.062

33.568

270.117

<0.001

<0.001

0.119

<0.001

<0.001

<0.001

<0.001