基于DEM量算耕地坡度的方法研究

Algorithms Research for Slope Calculating of Cultivable Land Based on DEM

坡度是最基本的地形因子之一,介绍了基于DEM的地形坡度计算方法,结合天津地区的1∶5万DEM数据,利用DEM计算地形坡度来确定耕地坡度的方法。并与传统的量算方法相比,利用DEM量算耕地坡度的方法是非常有效的。

Slope is one of most frequently used terrain parameters in Geo - Science model . This paper introduces some calculating methods about slope based on Digital Elevation Model （DEM） . The results of the method of calculating of slope of field based on digital elevation model are confirmed on data independent 1 ： 50 000 DEM in TianJin city . The method is reliable and practical.