Abstract

The distribution of the vascular plants species occurring in the composition of high mountain communities with the participation of stitchwort polster (Stellaria pulvinata Grub.) are analyzed. They form a separate altitudinal belt in the altitudinal-zonation range of vegetation and belong to the arid class of zonality types in the central Mongolian Altai (2700–3300 m a.s.l. Baltic System (BS)). The analysis identified cenotically active species in the cenofloras of cryophytic steppes and cryophytes–forb cushion plants, which include distinctive elements of cryo-xerophytic conditions, such as Oxytropis oligantha, O. chionophylla, Saussurea leucophylla, Chamaerhodos altaica, Arenaria meyeri, and Androsace septentrionalis; montane species confined to the high mountain areas of southern Siberia and central Asia (Festuca kryloviana and Poa altaica) and bunchgrasses, which are represented by widely distributed species typical of the steppe (Festuca lenensis and Koeleria cristata). Modeling of the spatial distribution revealed that the ecological–cenotic optimum for the majority of species in the region is found outside of the cryophytic steppes and cushion-plant growth area. According to the identified potential distribution ranges of species accompanying Stellaria pulvinata, a close relationship has been established between the vegetation of the central Mongolian Altai high mountains and the mountains of southern Siberia.

中文翻译：

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细粒恒星草参与的低温草原和垫层植物的无花果物种分布。在蒙古的阿尔泰

摘要

分析了在金缕梅（Stellaria pulvinata Grub。）的参与下，在高山社区组成中存在的维管植物物种的分布。它们在植被的海拔分区带中形成一个单独的海拔带，属于蒙古阿尔泰中部（2700–3300 m asl波罗的海系统（BS））的干旱带类型类型。该分析确定了低温干草原和低温植物-福布垫层植物的ceenofloras活动物种，其中包括低温旱生条件的独特元素，如Oxytropis oligantha，O。chionophylla，Saussurea leucophylla，Chamaerhodos altaica，Arenaria meyeri和七叶蕨; 山地物种仅限于西伯利亚南部和中亚的高山地区（Festuca kryloviana和Poa altaica）和束草，以草原典型的广泛分布物种（Festuca lenensis和Koeleria cristata）为代表。对空间分布进行建模后发现，该地区大多数物种的生态生态最佳状态是在低温草原和垫层植物生长区域之外发现的。根据确定的伴生恒星属的物种的潜在分布范围蒙古中部阿尔泰高山的植被与西伯利亚南部的高山之间已经建立了密切的关系。