How to use gis to analyze the slope of land use

Using the results of land and resources investigation, the land information is extracted, and the land layer is generated in ARC or INFO. According to the analysis, the land attributes are classified, and the DEM data of this area are obtained. Using DEM data to generate gradient distribution layer, gradient distribution layer and elevation distribution layer respectively; Overlay the cultivated land layer, slope layer, aspect layer and elevation zone layer, and use the OVERLAYEVENTS command for overlay analysis. After the layers are superimposed, the slope, aspect and elevation attributes of cultivated land can be extracted according to various classification conditions, and the distribution map of slope, aspect and elevation of cultivated land can be obtained, and the area statistics can be carried out by using the area calculation function of ARC or INFO. It is worth noting that on the slope