Базовые онтогенетические спектры ценопопуляций ключевых видов черневых лесов Западного Саяна

Abstract

The ontogenetic structure of natural populations of key-species (Pinus sibirica, Abies sibirica, Betula pendula) are investigated from the example of old-growth Siberian Pine-Fir chern mountain forest with fern and tall herbaceous vegetation (West Sayan, 53º01' N, 92º59' E). Populations of Siberian Pine and Fir have different structure, but both were found to be sustainable. In conditions of strong phytocoenotic significance of ferns and tall herbs the development of these species populations depends on each other. Birchhas a fragmented ontogenetic structure. The resulting etalon parameters of key-species population structure will serve as the basis of an objective assessment of disturbed mountain forest ecosystems successional status.