Research Article
Variation Characteristics of the Main Hydrochemical Indexes in Typical Subterranean Rivers in the South China Karst Region Based on Curve Fitting
Table 1
Data on the main hydrochemical indexes at the 25 sampling sites in the four study areas.
| | Sampling sites | Indexes | | pH | T | Ec | DO | K+ | Na+ | Ca2+ | Mg2+ | | Cl- | | | | (°C) | (μs/cm) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) | (mg.L−1) |
| | JL-1 | 7.35 | 22.90 | 507.00 | 5.81 | 1.32 | 5.30 | 92.00 | 10.74 | 268.40 | 6.49 | 43.17 | 9.00 | | JL-2 | 7.62 | 24.00 | 564.00 | 7.27 | 1.60 | 7.11 | 90.00 | 16.40 | 292.80 | 11.32 | 41.30 | 7.89 | | JL-3 | 7.20 | 23.00 | 606.00 | 1.39 | 1.76 | 8.95 | 92.00 | 19.12 | 317.20 | 13.17 | 44.82 | 18.60 | | JL-4 | 7.05 | 20.70 | 544.00 | 0.01 | 4.88 | 12.15 | 82.00 | 16.00 | 256.20 | 14.24 | 57.78 | 14.02 | | JL-5 | 7.19 | 21.40 | 557.00 | 1.82 | 7.05 | 18.95 | 78.00 | 15.37 | 244.00 | 20.86 | 56.51 | 20.64 | | ND-1 | 9.20 | 25.00 | 304.00 | 12.50 | 2.20 | 5.66 | 62.00 | 3.41 | 173.85 | 4.71 | 34.21 | 8.95 | | ND-2 | 8.19 | 22.10 | 375.00 | 10.54 | 2.90 | 7.94 | 65.00 | 4.33 | 170.80 | 6.82 | 38.76 | 12.57 | | ND-3 | 7.31 | 19.40 | 392.00 | 5.39 | 1.11 | 4.85 | 76.00 | 4.24 | 195.20 | 3.83 | 35.77 | 10.21 | | ND-4 | 7.77 | 20.50 | 352.00 | 7.58 | 2.17 | 6.59 | 69.00 | 3.48 | 158.60 | 5.62 | 34.29 | 12.91 | | ND-5 | 8.05 | 20.00 | 350.00 | 8.97 | 1.33 | 2.64 | 72.00 | 4.47 | 140.30 | 2.60 | 45.42 | 6.02 | | ND-6 | 8.20 | 20.30 | 364.00 | 8.65 | 1.90 | 5.93 | 70.00 | 3.31 | 176.90 | 4.90 | 32.82 | 11.75 | | ND-7 | 7.60 | 20.80 | 337.00 | 8.02 | 0.44 | 0.98 | 72.00 | 2.27 | 201.30 | 1.64 | 12.67 | 5.32 | | ND-8 | 8.09 | 19.70 | 352.00 | 8.22 | 1.58 | 1.98 | 69.00 | 4.47 | 140.30 | 2.41 | 61.52 | 5.13 | | MC-1 | 6.78 | 9.30 | 18.40 | 11.35 | 0.20 | 0.28 | 19.00 | 1.10 | 12.20 | 1.12 | 3.66 | 2.62 | | MC-2 | 6.75 | 12.90 | 81.30 | 10.06 | 0.17 | 0.27 | 17.00 | 3.78 | 36.60 | 1.08 | 3.50 | 2.70 | | MC-3 | 7.62 | 13.00 | 155.70 | 10.61 | 0.10 | 0.29 | 25.00 | 7.25 | 103.70 | 1.09 | 3.99 | 2.48 | | MC-4 | 7.01 | 19.30 | 487.00 | 8.91 | 0.32 | 0.35 | 106.00 | 12.42 | 353.80 | 1.10 | 6.10 | 2.80 | | MC-5 | 7.36 | 17.90 | 333.00 | 8.91 | 0.50 | 0.48 | 72.00 | 9.76 | 213.50 | 1.42 | 5.79 | 3.93 | | MC-6 | 7.93 | 17.80 | 355.00 | 9.32 | 0.57 | 0.47 | 79.00 | 9.80 | 250.10 | 1.43 | 6.06 | 4.76 | | ML-1 | 7.49 | 17.80 | 395.00 | 7.88 | 0.15 | 0.21 | 72.00 | 12.83 | 256.20 | 1.27 | 7.55 | 3.25 | | ML-2 | 7.51 | 13.80 | 401.00 | 6.15 | 1.57 | 0.69 | 64.00 | 15.39 | 256.20 | 1.71 | 7.71 | 3.90 | | ML-3 | 7.66 | 17.60 | 427.00 | 8.10 | 1.20 | 0.35 | 64.00 | 26.54 | 286.70 | 1.58 | 7.85 | 4.14 | | ML-4 | 7.66 | 18.10 | 409.00 | 7.02 | 0.73 | 0.71 | 62.00 | 21.09 | 244.00 | 1.73 | 8.69 | 12.34 | | ML-5 | 8.03 | 15.30 | 369.00 | 9.21 | 0.62 | 0.39 | 58.00 | 18.30 | 237.90 | 1.44 | 7.59 | 3.97 | | ML-6 | 7.85 | 17.80 | 386.00 | 8.79 | 0.44 | 0.30 | 58.00 | 19.73 | 250.10 | 1.30 | 8.03 | 4.73 |
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