Abstract
Erosion is a natural process that is difficult to remove or zero erosion rates. The purpose research was analysing erosion hazard and conservation planning. The method used is a survey and take soil samples for analysis in the laboratory. Parameters analysed: texture, volume weight, permeability and organic matter. Soil erosion rate is calculated with USLE. The calculation results show that erosion is very light (land units 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, and 12) and light (land units 5). The highest value is in moor land use (29.83 tons/ha /year) and the lowest is rice field land use (0.003 tons/ha/year). The level of erosion hazard is classified as very mild and mild, but the actual erosion that occurs exceeds tolerable erosion. Conservation actions is by increasing plant density, planting soil cover crops, adding organic matter, mulching, repair existing terraces.
Highlights
Increasing demand for land continues to increase due to the addition of the population, while the area of land cannot increase so that there is a change in land use, resulting in land damage and impact on environmental sustainability (Suharyadi et al, 2011)
Knowing the estimated loss of land using Universal Soil Loss Equation (USLE), we can estimate the conservation planning undertaken and the costs required for erosion control measures (Brychta and Janecek, 2019)
Erosion Hazard Level is calculated based on the amount of erosion (A) and tolerable erosion (Edp or T), with the equation EHL = A/T
Summary
Increasing demand for land continues to increase due to the addition of the population, while the area of land cannot increase so that there is a change in land use, resulting in land damage and impact on environmental sustainability (Suharyadi et al, 2011). If land use and management do not meet the rules of soil and water conservation, it can cause loss of topsoil due to erosion. The impact of erosion is a decrease in soil quality in terms of chemical, physical and biological soil. This means that soil erosion contributes negatively to agricultural production, water quality, ecosystem health in the aquatic environment and landscape aesthetic value (Arsyad, 2010). An approach to understanding erosion hazard is important to know to improve land use management. Knowing the estimated loss of land using USLE, we can estimate the conservation planning undertaken and the costs required for erosion control measures (Brychta and Janecek, 2019)
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