ИСТИНА

There are two main genetic complexes of biogenic mezo-, micro- and nanorelief at forest zone of the European part of Russia – zoogenic and phytogenic. Each of these complexes subdi-vide into accumulative and denudation. Accumulative forms are result of organism-constructor and organism-depositor’s activity, organism-destructors create denudation biogenic relief. Bio-genic factor plays an important role in relief-formation in the forest zone. Biogenic is basic geo-morphological process at many places such as swamp areas, beaver complexes and subhorizontal surfaces of interfluves and different terraces – river, sea, lake. Also organisms exert strong influ-ence on relief in balkas and gullies. Indirect effect of biota influences intensity of abiogenic ge-omorphological processes at forest zone of European part of Russia. Contribution of biogenic processes to relief-formation is quantitatively comparable with contribution of another geomor-phological processes and sometimes exceed it. Average density of biogenic forms at forest zone get from several tens to one hundred forms per ha, maximum – thousand forms per ha in gullies and tens thousand forms per ha at swamp areas.