黑龙江省九三垦区地形多属丘陵漫岗区,以旱作农业为主。通过种植林带分割地块,存在大量顺坡和斜坡耕作,加之采取大型机械进行农业作业,农地水土流失严重,正确计算农地土壤流失量具有重要意义。选取鹤山农场鹤北小流域为研究区,通过小流域调查,在GIS基础上进行地形分析,采用土壤流失方程计算流域土壤流失量,为进一步做好本区域水土保持,治理水土流失提供理论支持。 The landform of Jiusan Reclamation Area in Heilongjiang Province is mostly a hilly area with hills and dry areas dominated by dry farming. There are a lot of landslide and slope farming through the planting plots of forest belts, combined with large-scale machinery for agricultural operations, serious soil and water loss in agricultural land, the correct calculation of agricultural land loss is of great significance. The small watershed in Heshan Farm of He Bei was chosen as the research area. Through the investigation of small watershed, topographical analysis was conducted on the basis of GIS. The soil loss equation was used to calculate the amount of soil erosion and provide theoretical support for further soil and water conservation and soil erosion control in this area.