Abstract
South Sumatera is one of the provinces with a large number of lowlands in Indonesia consisting of tidal land and lowland swamps, one of which is located in Tanjung Api-Api. The conversion of lowlands into built-up areas will cause physical, socio-economic, environmental, and public health impacts. One of the impacts arising from the development of settlements and infrastructure in lowland areas is land subsidence and flooding. The purpose of this research is to create a model for mitigating land subsidence in lowland areas spatially. The spatial model is carried out by weighting with Analytical Hierarchy Processes (AHP) and then mapping mitigation efforts that will be carried out based on the potential for land subsidence. The results show that if the lowland area is developed into an industrial and residential area, it will have an impact on land subsidence with a moderate to high potential level. Based on the zoning of the potential for land subsidence, the best pre-disaster mitigation efforts to do are choosing the type of construction according to the type of soil, conserving groundwater, maintaining infiltration areas and green open spaces, and regional spatial planning.
Highlights
The plan of development of a special economic zone in Tanjung Api-Api will change the environmental ecosystem, a large-scale landfill at the research site will affect environmental conditions, including the surrounding soil conditions
The results of previous studies indicate that the change in the Tanjung Api-Api area into a built area will trigger land subsidence
Based on the literature review, several things can be done to reduce the impact of land subsidence, namely selecting the appropriate type of construction to be applied in built-up areas and conserving groundwater
Summary
The plan of development of a special economic zone in Tanjung Api-Api will change the environmental ecosystem, a large-scale landfill at the research site will affect environmental conditions, including the surrounding soil conditions. This will affect the lowland ecosystem in the region because lowlands have a very large environmental role. Mitigation is an action to reduce the effects of natural disasters so that the resulting disasters do not cause a major impact. Disaster Mitigation Actions include the collection and analysis of disaster data to reduce the level of vulnerability and danger of a disaster, predict disaster events, preparedness, emergencies, and socialization of disasters through print media and lectures [2]
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