ABSTRACT
In Taiwan, the landslide is one of the most severe hazards in mountainous areas, especially for those nearby urban areas and roads. More than 75% of Taiwan is mountainous, forcing human activity to meet the expectations of land development. In addition, the frequency of typhoons and rainfall are predicted to intensify as a result of climate change. The continuation of global warming will likely lead to more landslides. Taiwan’s government agencies have adapted measures to ease the effects of climate change, measures that need not only be implemented as swiftly as possible but also be formulated to minimize risks. In this report, we introduce government agencies’ climate projections, trend analysis of landslide frequency variations, and the construction of the landslide risk map. These agencies report that the total precipitation and the maximum rainfall intensity of the central and southern Taiwan will increase. As per its population density and human development index, central Taiwan has a high social vulnerability. The landslide risk map incorporates rainfall triggering effects, geological environmental conditions, and social vulnerability. It suggests high levels of risk in central and southern Taiwan, and efforts should be made to strengthen adaptive capacity, including measures for lowering social vulnerability and establishing an integrated operating system.
