Based on the disadvantages of GM(1,1) prediction, this paper tries modifying it, and the modifying model is identified by the prediction of amble land in Wuhu City.

• 摘要针对GM(1,1)模型预测的不足，对其进行修正得到修正模型，并利用芜湖市耕地变化进行实例验证和应用。