Abstract
Dzungarian Alatau mountain is a unique place of agrobiodiversity concentration. The apple forests consisted of the red book species Malus sieversii (Ledeb.) M. Roem. in combination with Abies sibirica Ledeb. and Populus tremula L. form a pronounced altitudinal-climatic band within 1200-1600 m in Dzungarian Alatau. In this article the features of the floristic composition of M. sieversii communities in four gorges of the Zhongar-Alatau National Park (Pikhto-voye, Mushabay, Kok-Zhota and Krutoye) were revealed. Plant species characteristic of the apple forest belt are shown. In the studied communities, there are 138 species of higher vascular plants from 110 genera, 42 families. The leading families in terms of the number of species are Asteraceae, Apiaceae, Rosaceae, Poaceae, Lamiaceae. Generic coefficient was revealed as 79.7 %. The ecological and geographical analysis of the noted species indicates that the floristic richness of the communities is mainly due to the natural conditions of growth, the leading of which are the height, exposure, moisture content of the substrate, and the closeness of the crowns of the tree canopy. In addition, the degree of anthropogenic impact on communities is of great importance.
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