| dc.description.abstract | This research was aimed to predict the erosion hazard level based on the Universal Soil Loss Equation (USLE) formula and to create of distribution mapping of erosion hazard level at Lempake sub watershed area. This research was conducted by overlay four types of maps, i.e : rainfall, soil, slope and land cover maps. The results showed that the process of overlay from topographic map, map of soil types, vegetation maps and rainfall map were 36 land units about 583.108 ha area. Annual rainfall in the sub-watershed of Lempake during about 10 years old from year of 2008 to 2017 amounted was 2445.8 mm. Soil type of dominant waspodsolik kandika bout 1724 ha area. The most of topography of the Lempake sub-watershed was dominated by the slope class of 15-25% (rather steep) which is 1218.34 ha. Land coverwere dominated by shrubs with an area of 830.27 ha. An overlay process was done to get the final result, i.e. erosion hazard level prediction. The level was classified intofive categories those were very lig ht, light, medium, heavy, and very heavy. The results showed that the d istr ib utio n map p ing o f erosion hazard level at Lempake sub watershed area ranged from verylight to very heavy, with the percentage soft he affected areas are 20.39%;10.87%; 3.93%; 36.87%, and 27.9% respectively. The results can beused as a database to make a good planning watershed area management. | en_US |
