The indices of the total population and cultivated land in Heze District is predicted by using the model of GM(1,1),and the total food output is forecasted based on the topological prediction model.

• 利用GM（1，1）模型预测了菏泽地区的总人口和耕地面积，用拓扑预测模型预测了其粮食总产，并对三者进行了关联度分析。