Erosion risk assessment: A case study in Lam Dong province, Vietnam

Abstract

In recent years, landslides have increasingly become a pressing issue in Vietnam for many cause s , i n which erosion is that which promote s landslides occurrence. Therefore, t his paper examined the erosion level in Lam Dong province using a empirical equation of the particle size distribution named as “ ROM scale ” . Based on the categories of “Critical”, “Very high”, “High”, “M oderate ” and “Low” range, the erosion risk in various areas w as identified. Laboratory ana lysis results showed that most samples were sandy clay loam, clay, clay loam, and silty clay. Combined with site investigation r esults, this paper clarified the linear relationship between soil texture and the erosion level as well as the influence of vegetation cover on the erosion level. From there, early forecasts can be made and solutions to reduce landslides can be proposed, aiming at socio - economic development. The results of this study can also serve as a basis and premise for furthe r studies in the whole Lam Dong province.