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

邱孟龙,曹小曙,周建,冯小龙,高兴川

Spatial Differentiation and Impact Factors of Grain Yield Per Hectare in Weibei Plateau Based on GWR Model: A Case Study of Binxian County, Shannxi

QIU MengLong,CAO XiaoShu,ZHOU Jian,FENG XiaoLong,GAO XingChuan

表3 OLS模型与GWR模型参数估计比较

Table 3 Parameter estimation comparison OLS model with GWR model

模型 Model 信息准则 AIC R2 调整后的R2 Adjust R2 残差平方和 RRS 残差估计标准差 Sigma OLS模型 OLS model 1080.07 0.80 0.78 198694.52 46.22 GWR模型 GWR model 1069.03 0.86 0.82 140028.34 41.53 GWR模型对模拟精度指标的提高 Improvement of simulation accuracy by GWR model 11.04 0.06 0.04 58666.18 4.69