Аннотация:The end of the XX century and the beginning of the XXI century are distinguished by large and disastrous debris flows including catastrophic events of 2017 in the Caucasus Mountains of Russia as a result of modern contrast climatic conditions and anthropogenic activity. These events became a good basis for study landscape successions as a kind of landscape dynamics in the zones of debris flow release. Four main landscape succession stages (initial, formation, quasi-stable and destruction) with different vertical structure and time of existing were outlined in the study area. Some common and individual features of plant and soil formation with particular attention to the initiation stage on the debris flow deposits in the forest and steppe belts on different altitudes in various river valleys of the Central and Western Caucasus were revealed. Typical and specific species of plants of different ecological groups were determined for the stages of succession in the various altitudinal belts and river basins as indicators of these stages.