RAINFALL INTENSITY AND ITS EFFECT TO THE TOPSOIL EROSION

• Main Author: MUTIA ULFI (NIM : 10108077); Pembimbing : Dr. Nuning Nuraini
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/16628
• Institution: Institut Teknologi Bandung

Soil physical changes, both biologically and chemically. These changes are caused by the influence of climatic elements are accelerated by human behavior. These changes can gradually cause damage to the body of land in case of excess can lead to loss of topsoil. This phenomenon is known as erosion. <br /> <br /> <br /> <br /> <br /> <br /> <br /> In Indonesia, the phenomenon of erosion are found in areas with a range of latitude 400 NL and 400 SL. Erosion is influenced by rainfall patterns, types of vegetation <br /> <br /> <br /> <br /> <br /> <br /> <br /> growth, and soil type. However, the rain factor was most influential on the rate of erosion in Indonesia. Large rainfall, intensity, and distribution of rainfall determine <br /> <br /> <br /> <br /> <br /> <br /> <br /> the strength of the dispersion of rain on the land, the amount and speed of runoff and erosion damage. <br /> <br /> <br /> <br /> <br /> <br /> <br /> This final project will discuss the differential equation model that captures the phenomenon of the relationship between erosion and rainfall. Of this model obtained <br /> <br /> <br /> <br /> <br /> <br /> <br /> four types of equilibrium points. Three of the four equilibrium point meets the stability criteria. While the fourth is an equilibrium point which describes the equilibrium point when there is erosion phenomena and reaches a steady state. <br /> <br /> <br /> <br /> <br /> <br /> <br /> The next model will be developed to include the prevention and treatment factors to the occurrence of erosion, namely the conservation of soil with the closing act of the <br /> <br /> <br /> <br /> <br /> <br /> <br /> soil surface with vegetation. Then be compared using numerical simulations. The results show the differences between the model and the model without conservation <br /> <br /> <br /> <br /> <br /> <br /> <br /> efforts with conservation efforts, namely the model with conservation efforts, the rate of erosion can be suppressed so that the smaller number by the rate of erosion on the model without conservation efforts.