基于GIS和Logistic回归模型的洪涝灾害区划研究
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王鹏, 邓红卫
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Study on Flood Hazard Risk Zoning Based on GIS and Logistic Regression Model
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Peng Wang, Hongwei Deng
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表2 Logistic回归分析结果输出表
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Table 2 Output table of Logistic regression analysis results
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指标 | B | S.E. | Wald | df | 显著性 | Exp(B) | 95% EXP(B) 置信区间 |
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下限 | 上限 |
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灾害点密度x1 | 4.507 | 2.836 | 2.437 | 1 | 0.000 | 9.065 | 3.022 | 17.926 | 汛期降水量x2 | 3.599 | 1.667 | 0.920 | 1 | 0.037 | 0.202 | 0.008 | 5.301 | 地形起伏度x3 | -1.349 | 8.144 | 0.167 | 1 | 0.000 | 0.035 | 0.010 | 0.504 | 植被覆盖类型x4 | -2.743 | 0.856 | 19.126 | 1 | 0.000 | 0.024 | 0.004 | 0.127 | 河网密度x5 | 0.152 | 0.316 | 0.233 | 1 | 0.048 | 1.165 | 0.627 | 2.162 | 距河流距离x6 | 2.064 | 0.203 | 103.218 | 1 | 0.000 | 6.825 | 5.288 | 7.874 | 常数 | -3.243 | 0.212 | 234.046 | 1 | 0.000 | 0.039 | - | - |
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