HASIL PLAGIASI ANALISIS TINGKAT BAHAYA EROSI DI DAS KINTAP BAGIAN HILIR KABUPATEN TANAH LAUT

Abstract

Changes in land cover in a watershed, which was originally forest, are now shrubs, rice fields, plantations, settlements, and mining, causing several problems. Tanah Laut Regency is one of the areas where there is a lot of land conversion so that the watershed in the area does not play a good role, especially in the downstream area, which is the area that is most often affected. The purpose of this study was to calculate the amount of erosion in the downstream Kintap watershed and analyze the erosion hazard level (TBE) in the downstream Kintap watershed. The method used is the Universal Soil Loss Equation (USLE) proposed by Wischmeier and Smith. The data is collected by purposive sampling. The results showed that the highest erosion value was in Land Unit 9 on open land, the erosion value was 28.16 tons/ha/year with erosion hazard class II. While the erosion value of 1.59 tons/ha/year on Land Unit 7 became the smallest erosion value with erosion hazard class I. The level of erosion hazard for each land unit with different land cover, showed TBE very light class (0-SR) contained in oil palm plantations, rubber plantations, and secondary forests. Meanwhile, the light TBE class (I-R) was in open land and dryland agriculture and the very heavy TBE class (IV-SB) was in open land