Landslide Susceptibility of Agricultural Area in Lembah Gumanti, Solok - West Sumatra Province

One of the factors that threaten food resilience in Indonesia is the natural disasters such as landslides. Cultivation of agricultural crops in hilly terrain with fairly steep slopes and high rainfall without regard to land conservation and good farmland cultivation practices will result in landslide disaster that could damage the irrigation and agricultural land. Soil movement is a consequence of natural dynamic phenomenon to reach new condition due to disturbance of balance in environment, either by natural or by human activity. Movement of the ground will occur on a slope, if there is a state of imbalance that causes the occurrence of a mechanical process, resulting in a part of the slope moving according to the force of gravity. The process of ground motion involves complex interactions between geological, geomorphological, hydrological, rainfall and landuse aspects. A research about landslide susceptibility of agricultural area has been conducted in Lembah Gumanti, Solok, West Sumatra Province. The research show that from the total area of 24,294 ha, high vulnerability zone is about 903 ha (4%), medium vulnerability zone is 6,913 ha (28%), and low vulnerability zone 16,478 ha (68%). Landslide vulnerability in agriculture area potentially arise on dry land farming (525 ha), paddy field (3 ha) and mixed garden (375 ha).