一种新的土壤冻融特征曲线模型
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付子腾, 吴青柏, DYCK Miles, 何海龙
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A new model to describe soil freezing-thawing characteristic curve
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Ziteng FU, Qingbai WU, Miles DYCK, Hailong HE
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表4 四种经验公式计算的值在不同土壤溶质浓度下的表现,其中参数通过公式(19)拟合得到
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Table 4 The statistical indexes of the four empirical formulas calculating the at different soil solute concentrations, of which the parameters are fitted by the Eq.(19)
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经验公式 | 浓度/(g·L-1 NaCl) | α | β | Tf /℃ | RMSE/(cm3·cm-3) | AD/(cm3·cm-3) | NSE | 综合指标 |
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| 0 | 35.4 | 1.38 | 1.26 | 0.018 | -0.0008 | 0.932 | RMSE=0.014 AD=-0.0002 NSE=0.960 | 10 | 3.92 | 1.61 | 1.26 | 0.008 | -0.0003 | 0.977 | 20 | 1.60 | 1.82 | 1.26 | 0.009 | 0.0010 | 0.985 | 35 | 0.83 | 1.93 | 1.26 | 0.017 | -0.0002 | 0.864 | | 0 | 18.41 | 1.46 | 0 | 0.015 | -0.0050 | 0.951 | RMSE=0.013 AD=-0.0002 NSE=0.965 | 10 | 2.89 | 1.70 | 0.61 | 0.006 | -0.0003 | 0.984 | 20 | 1.58 | 1.81 | 1.22 | 0.010 | 0.0007 | 0.985 | 35 | 1.15 | 1.76 | 2.09 | 0.017 | 0.0002 | 0.856 | | 0 | 92.27 | 1.29 | 5.52 | 0.022 | -0.0010 | 0.895 | RMSE=0.010 AD=-0.0003 NSE=0.962 | 10 | 10.76 | 1.42 | 5.92 | 0.012 | -0.0004 | 0.944 | 20 | 5.20 | 1.46 | 5.92 | 0.03 | -0.0001 | 0.999 | 35 | 2.60 | 1.5 | 5.92 | 0.019 | -0.0002 | 0.829 | | 0 | 18.41 | 1.46 | 0 | 0.015 | -0.0005 | 0.951 | RMSE=0.016 AD=-0.0004 NSE=0.946 | 10 | 11.74 | 1.41 | 6.61 | 0.012 | -0.0004 | 0.941 | 20 | 13.55 | 1.32 | 16.71 | 0.012 | -0.00001 | 0.976 | 35 | 14.44 | 1.27 | 38.69 | 0.023 | 0.00002 | 0.753 |
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