基于GIS和RUSLE模型的土壤侵蚀研究  

Research on Soil Erosion in Liaoning Province based on GIS and RUSLE Model

作　　者：高欢 GAO Huan(Liaoning Water Conservancy and Hydropower Survey and Design Research Institute CO.LTD.,Shenyang 110000,China)

机构地区：[1]辽宁省水利水电勘测设计研究院有限责任公司,辽宁沈阳110000

出　　处：《河南水利与南水北调》2024年第6期77-78,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：为了研究辽宁省土壤侵蚀的空间分布特征,此研究采用GIS技术和RUSLE模型对辽宁省土壤侵蚀进行了定量分析。研究表明,辽宁省降雨侵蚀力(R)、土壤可蚀性(K)、地形(LS)、植被覆盖管理(C)与水土保持因子(P)呈现不同程度分异性,侵蚀模数介于0~4 695 t/(hm^(2)·a),其平均值为27.50 t/(hm^(2)·a),整体属轻度侵蚀;其侵蚀模数具有明显的空间差异性,高侵蚀风险呈斑点状分布于长白山和辽西丘陵局地。侵蚀模数随植被覆盖度增加而减少,区域侵蚀模数以耕地、园地最高。In order to study the spatial distribution characteristics of soil erosion in Liaoning Province,this study used GIS technology and RUSLE model to quantitatively analyze soil erosion in Liaoning Province.The study showed that rainfall erosion force(R),soil erodibility(K),topography(LS),vegetation cover management(C)and soil and water conservation factor(P)in Liaoning Province showed different degrees of heterogeneity.Erosion modulus in the study area ranged from 0 to 4695 t/(hm^(2)·a),with a mean value of 27.5 t/(hm^(2)·a),and the overall erosion was mild;Its erosion modulus had obvious spatial variability,and the high erosion risk was distributed in patches in the Changbai Mountains and the local area of the western Liaoning hills.The erosion modulus decreases with the increase of vegetation cover,and the regional erosion modulus is highest in cultivated land and garden land.

关 键 词：土壤侵蚀 GIS RUSLE模型 辽宁省 空间分布 

分 类 号：S157[农业科学—土壤学]