GIS and RS Based Soil Erosion Modelling in Sri Lanka: A Review

Purpose : Over the seventy years, various soil erosion modeling methods were developed in world with different input requirements and complexity. Some of these models have been applied Sri Lanka covering several regions country at scenarios over past twenty years. Thus, prime objective this study is to compare commonly practiced GIS/ RS based assessment derivation techniques model parameters used Lanka. Research Method Scholarly research articles, conference proceeding papers, previously published literature on years critically reviewed, examined, compared find methodologies parameters, analysis methods, applications special reference Findings The results revealed that, each case, empirical predict rates terms rill sheet excluding gully erosion. Furthermore, loss catchment or entire scale has assessed case by using methods. are R factor (rainfall erosivity), K (soil erodibility), LS (slope gradient), C (crop management factor), P (support practice factor). Originality/ Value Different (R, K, LS, C, P) evaluated order most appropriate that can be future studies.