Сукцессионные системы растительного покрова различных геоморфологических уровней в дельте р. Лены

Abstract

Vegetation diversity depending on relief and substrate features was described in southern part of Lena river delta in tundra zone. Main approach based on combination of traditional ground research and high resolution remote sensing techniques. Three main surfaces – floodplain, first and third river terraces each were characterized by vegetation complexes interpreted as sucessional series depending on outer natural forces – flood dynamics, permafrost and Ice Complex degradation. For the floodplain it is primary succession on fresh substrate organized in two rows according to mesorelief forms. For the first terrace it is subclimax cycle depending on ice wedges degradation or partly progradation. For the third terrace it is secondary succession connected with Ice Complex degradation.