Characteristics Analysis of landslides, collapses and debris flows occurred from 2010-2019 in China

Abstract Based on the national geological disasters database in China, this paper presents the temporal and spatial distribution characteristics, triggering factors and losses caused by land-slides, collapses and debris flows in China from 2010 to 2019: (1) landslides, collapses and de-bris flows are usually developed extensively in the transitional areas between the three terraces and the areas between mountains and plains; landslides, collapses and debris flows of large scale are more developed in regions near active faults, and the majority of these disasters still remain active; (2) the temporal development of landslides, collapses and debris flows follows a general trend of normal distribution, and the high-incidence season is from May to August. The high-intense period slightly shift from the south to the north in China; (3) precipitation and earthquakes are important triggering factors of landslides, collapses and debris flows. The magnitude of the earthquake and properties of seismogenic faults affects the distribution and the scale of landslide, collapse and debris flow; (4) in the past decade, landslides, collapses and debris flows have caused 5,968 people dead or missing, and caused direct economic losses of over 40.98 billion yuan. According to the above research, this paper puts forward the key periods and areas for prevention of sudden geological disasters in the future in China.