Methods:Based on the spatial correlation or autocorrelation hypothesis, the spatial semivariograms model of HFRS was built, and the fractal D of HFRS was calculated by its semivariograms model.
方法：在疾病空间相关自相关假设下，构造疾病空间分布变异函数模型，应用变异函数计算HFRS的空间分维D值。
Through comparison with the classic logistic model without considering the spatial autocorrelation, this model showed better goodness of fitting and higher accuracy of fitting.
实验与分析结果表明，改进的空间分析模型拟合优度、拟合精度都有较大的提高。
Through comparison with the classic logistic model without considering the spatial autocorrelation, this model showed better goodness of fitting and higher accuracy of fitting.
实验与分析结果表明，改进的空间分析模型拟合优度、拟合精度都有较大的提高。
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