GUELDENSTAEDTIA MONOPHYLLA (FABACEAE) IN NORTH-WESTERN MONGOLIA: DISTRIBUTION, VITALITY, ONTOGENETIC AND SPATIAL STRUCTURE OF POPULATIONS
I.Yu. Selyutina1, E.S. Konichenko1, D. Darikhand2, E.G. Zibzeev1
1Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
2Khovd University, 213500, 16/4300, Khovd, Mongolia
Keywords: Gueldenstaedtia monophylla, редкий вид, жизненность, популяции, онтогенетическая структура, пространственная структура, охрана, Северо-Западная Монголия, Gueldenstaedtia monophylla, rare species, vitality, populations, ontogenetic structure, spatial structure, conservation, north-western Mongolia
Abstract
The article presents the results of the analysis of the developmental, vitality and spatial structure of four coenotic populations of G. monophylla in a desert steppes north-western Mongolia. All studied species coenopopulations are not complete and definitive, normal, mature, have a bimodal developmental spectrum with peaks at g1 (v)- and g3-individuals. Changes in the structure of the ontogenetic spectrum (increasing the share of young plants) depend mainly on the environmental conditions and the degree of human disturbance of habitats - on the rocky slopes and with a decrease in pasture digression creates more favorable conditions for the survival of juveniles. Vitality type of the coenopopulations varies from prosperous to depressed. Spatial distribution of individuals is a contagious type. Due to the long period of generative G. monophylla in successfully renewed and there are stable for long periods in extreme conditions of desert steppes with high pasture digression.
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