ANALYSIS OF RATE AND CAPACITY INFILTRATION BASED ON VEGETATION COVER IN LATUPPA SUB-WATERSHED MUNGKAJANG DISTRICT, PALOPO, INDONESIA. Witno, Yumna, Abdul Rahim
Forestry of Faculty, Andi Djemma University
Abstract
Infiltration capacity is the soil^s ability to accommodate water that seeps into the soil, reducing surface runoff that will cause flooding. This study aims to determine the infiltration capacity of the vegetation cover in the Latuppa watershed, Mungkajang District. Data collection was carried out by direct observation in the field in a purposive manner in 10 plots, and each plot consisted of 3 replications. Data were analyzed using the rational method and the Horton method. The results of this study obtained the highest infiltration capacity data found in 10 plots, namely, 107.5 mm/minute (6,450 mm/hour), with an average infiltration rate of 0.4 mm/minute (24 mm/hour), vegetation cover dominated namely (Cananga odorata) with an IVI value of 78.41%, with an altitude of 362.79 meters above sea level, a gentle slope, with a soil structure of crumbs, loamy sand texture, very high soil density and organic matter of 2.10%. Several factors affect infiltration capacity in all observation plots, namely vegetation, elevation, slope, and soil physical properties, which include soil structure, soil texture, soil organic matter, soil density and time of measurement of infiltration capacity.
