Erosi Dan Upaya Konservasi Tanah Dan Air Di Sub DAS Wuno, DAS Palu

Soil erosion is the process by which soil and other materials are carried away by water, wind, or human activities,
leading to environmental damage and loss of fertile topsoil. This study aims to analyze the erosion hazard levels
and soil and water conservation efforts in the Wuno Sub-watershed, Palolo District, Sigi Regency. The research
was conducted from December 2023 to March 2024, with data collected through direct observation and
interviews at the study sites. The overlay method using the Universal Soil Loss Equation (USLE) was applied to
calculate erosion levels based on land cover maps, rainfall maps, soil type maps, administrative boundary maps,
slope class maps, and Wuno Sub-watershed maps. The results indicate that soil and water conservation efforts
have been implemented using mechanical methods such as the construction of check dams by the Palu Poso
Watershed Management and Protected Forest Agency in 2019, distributed across several locations. The predicted
erosion levels in the Wuno Sub-watershed are classified into four categories: Class I (Very Light) in areas with
Savanna and Paddy Fields, Class II (Light) in Primary Dryland Forests, Secondary Dryland Forests, and
Settlements, Class III (Moderate) in Shrublands, and Class IV (Severe) in Dryland Agriculture and Mixed Dryland
Agriculture. The total soil erosion in the Wuno Sub-watershed is 972.9 tons/ha/year. The barriers to effective
conservation include physical, economic, institutional, and technological factors.
Keywords: Soil erosion, Soil and Water Concervation, Universal Soil LossEquation (USLE),Check Dams