Research on Adjustment of Urban Land Grade Based on Digital Land Price Model

In this research,the digital land price model was proposed to adjust the land grade based on the problem of benchmark price during rectify the land grade.Chose the reasonable interpolation method and then make grid treatment,the three-dimension land price model was obtained using the bargaining land price,which supported by the ArcView.The model provided the structure of land price.The price of each unit was calculated after interpolation,then the map of the land grade was estimated that compared with the original to make adjust.