The Ural Mountains (the Urals) are a mountain range on the border between the continents of Europe and Asia. The Urals extend about 2500 km from north to south and run from the coast of the Arctic Ocean to the steppe of northwestern Kazakhstan. In terms of mycorrhizal traits, the vegetation of the Urals has not been studied absolutely compared with the other mountain systems of Europe. Detailed research of vegetation at the Telpos-iz Ridge (Northern Urals, Russia) allowed us to analyze changes in mycorrhizal status (obligatory mycorrhizal, OM; facultative mycorrhizal, FM; non-mycorrhizal, NM) and type (arbuscular, AM; ectomycorrhiza, ECM; ericoid, ERM; ORM, orchid mycorrhiza; NM) both in the main vegetation types and the individual communities along the elevation and ecological gradients based on 165 releves. This is the first attempt to describe the mycorrhizal status of plant communities across different elevations and ecological conditions outside Europe and North America. OM species were most diverse in all vegetation types. Maximal share of NM species was found in the mires and may be explained by over logged and unfertile soils of these habitats. Arbuscular mycorrhizas dominated across all vegetation types except for mires, where specific ecological conditions result in the prevalence of ECM and NM species. We analyzed the mycorrhizal status and type of plant communities along the main ecological gradients and found a decisive role of elevation and soil nitrogen content. At the same time, it remains unclear which factor determines the distribution of ECM and AM communities which are most represented in the vegetation of the study area.

中文翻译：

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植物群落的菌根状态和类型随海拔和生态梯度的变化-以北乌拉尔地区为例（俄罗斯）。

乌拉尔山脉（Urals）是位于欧洲和亚洲大陆之间边界的山脉。乌拉尔山脉从北向南延伸约2500公里，从北冰洋海岸一直延伸到哈萨克斯坦西北部的草原。就菌根特性而言，与欧洲的其他山区系统相比，尚未对乌拉尔的植被进行绝对研究。对Telpos-iz Ridge（俄罗斯北部乌拉尔）的植被进行的详细研究使我们能够分析菌根状态（强制性菌根，OM；兼性菌根，FM；非菌根，NM）和类型（丛枝，AM；外生菌根，主要植被类型和沿海拔和生态梯度的165个版本的个体群落中的ECM；类胡萝卜素，ERM； ORM，兰花菌根； NM）。这是描述欧洲和北美以外不同海拔和生态条件下植物群落的菌根状况的首次尝试。OM物种在所有植被类型中最多样化。在沼泽中发现了最大的NM物种份额，这可能是由于这些生境的伐木和不肥沃的土壤所致。除泥潭外，丛枝菌根在所有植被类型中均占主导地位，在泥潭中，特定的生态条件导致ECM和NM物种盛行。我们分析了主要生态梯度上植物群落的菌根状态和类型，并发现了海拔和土壤氮含量的决定性作用。同时，还不清楚哪个因素决定了研究区域植被中代表最多的ECM和AM群落的分布。