基于GWR模型的渭北黄土旱塬粮食单产空间分异 及其影响因子分析——以陕西彬县为例
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邱孟龙,曹小曙,周建,冯小龙,高兴川
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Spatial Differentiation and Impact Factors of Grain Yield Per Hectare in Weibei Plateau Based on GWR Model: A Case Study of Binxian County, Shannxi
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QIU MengLong,CAO XiaoShu,ZHOU Jian,FENG XiaoLong,GAO XingChuan
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表1 OLS模型回归估计结果
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Table 1 The estimation results of OLS model
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变量 Variable | 非标准化系数 Unstandardized coefficients | 标准误差 Standard error | 标准化系数 Standardization coefficient | t值 t value | P值 P value | 常数项 Intercept | 288.55 | 31.11 | --- | 9.28 | 0.00 | 坡度 Slope | 16.81 | 26.87 | 0.04 | 0.63 | 0.53 | 耕层厚度 Plough layer thickness | 45.95 | 32.57 | 0.10 | 1.41 | 0.16 | 土壤类型 Soil type | -37.13 | 23.88 | -0.08 | -1.95 | 0.09 | 侵蚀程度 Erosion degree | -26.84 | 22.74 | -0.07 | -1.18 | 0.24 | 土壤有机质 Soil organic matter | 218.80 | 32.83 | 0.45 | 6.66 | 0.00 | 地下水埋深 Groundwater depth | -87.97 | 17.81 | -0.28 | -4.94 | 0.00 | 道路密度 Road density | 35.05 | 22.57 | 0.09 | 1.95 | 0.09 | 施肥成本 Cost of fertilization | 178.33 | 22.61 | 0.42 | 7.89 | 0.00 |
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