Research progress and prospect of gravity erosion in loess region

Gravity erosion is one of the most important types soil in loess region, and it focus difficulty current research region. This paper systematically reviews progress gravity experimental observation methods, occurrence critical conditions, relationship between watershed water sediment, process simulation so on, It points out that lack monitoring capacity caused by random, sudden rapid characteristics bottleneck mechanism research, proposed new techniques such as photogrammetry with strong anti-interference ability high spatial-temporal resolution should be introduced to strengthen observation; Integrating long-term short-term influencing factors process, revealing control infiltration on erosion, clarifying law erosion; Strengthen study conditions redistribution based reveal material stabilization sediment yield differentiation; The combination explored, uncertainty analyzed, zoning method prone areas explored; A coupling model physical developed deeply provide reference for related research.