Abstract:Earthquake-induced landslides are one of the most common secondary geological hazards, and they not only deteriorate the environment but also result in severe casualties and property losses. Therefore, researchers have long been paying attention to this issue. To understand the development trend of studies on seismic landslides and refine scientific issues related to the quantitative evaluation of seismic landslides, this paper systematically summarizes the quantitative evaluation of regional landslides, including their origin, current state of development, existing problems, and prospects. The research findings indicate that (1) studies on quantitative evaluation of regional landslides emerged in the 1980s, and scholars have attained fruitful achievements after more than 50 years of unremitting efforts. To date, new social demands must be met by the quantitative evaluation of regional earthquake landslides. (2) Seismic landslide results from the coupling effect of multiple factors, including dynamics, geological characteristics, and geomorphic conditions. Seismic landslides can only be explained when the causes and dynamic processes are considered. Research on the causes and mechanisms of seismic landslides mainly focuses on the analysis of the dynamic response law of slopes under strong earthquakes. (3) Fundamental studies on development characteristics, causes and mechanisms, and database construction of seismic landslides have promoted research on the quantitative risk evaluation of landslide disasters, which includes the quantitative assessment of the hazard, vulnerability, and harm of seismic landslides. (4) In the quantitative evaluation of regional landslide disasters, it is necessary to further explore the systematic formation and spatiotemporal distribution patterns of regional landslides, improve and refine the methods for quantitative evaluation of regional landslide risks, and explore the strategies and plans for regional landslide disaster prevention and control.
