The steppe flora and vegetation represents a significant part of the Eurasian temperate grassland biome. In Serbia, this flora is a part of the biome’s western border zone and its characteristics therefore may be modified. The aim of this study was to determine the number of steppe taxa in Serbia and to conduct a chorological and ecological analysis of this flora. The results of diversity analysis and summary distribution of steppe taxa were presented on 50 × 50 km grids using the Universal Transverse Mercator projection. Regression analysis was used to explore the relationship between steppe species richness and the altitude. Floristic similarity between the geographical groups were analysed using the clustering method and species fidelity to each cluster was calculated. The species conservation status is also presented. In total, the presence of 233 steppe taxa in the investigated area was recorded. The most frequent families are Asteraceae, Fabaceae, Poaceae and Caryophyllaceae with Dianthus, Astragalus, Allium, Stipa, Cytisus, Centaurea and Silene as genera that contribute the most to steppe flora in Serbia. According to the chorological and life form spectra, Pontic European taxa and hemicryptophytes are the most numerous. Geological substrate like loess, sand, and other unbound sediment, as well as the lower altitudinal ranges proved to be most suitable for the development of steppe flora in Serbia. The distribution of steppe flora in Serbia indicates Deliblato Sand and Mt Fruška Gora as centres of diversity. The study suggests that the cumulative effect of environmental factors is important to consider in the planning of steppe species conservation.

中文翻译：

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塞尔维亚的草原植物群——分布、生态、多样性中心和保护状况

草原植物群和植被代表了欧亚温带草原生物群落的重要组成部分。在塞尔维亚，该植物群是生物群落西部边界区的一部分，因此其特征可能会被修改。本研究的目的是确定塞尔维亚草原类群的数量，并对这些植物群进行生态和生态分析。使用通用横轴墨卡托投影在 50 × 50 km 网格上呈现草原分类群的多样性分析和汇总分布结果。回归分析用于探索草原物种丰富度与海拔的关系。使用聚类方法分析了地理组之间的植物区系相似性，并计算了每个聚类的物种保真度。还介绍了物种保护状况。总共，记录到调查区域存在 233 个草原类群。最常见的科是菊科、豆科、禾本科和石竹科，其中石竹属、黄芪属、葱属、针茅属、花心属、矢车菊属和稷属对塞尔维亚草原植物群的贡献最大。根据脉络和生命形式光谱，本蒂欧类群和半隐生植物是数量最多的。黄土、沙子和其他未结合沉积物等地质基质以及较低的海拔高度被证明最适合塞尔维亚草原植物群的发展。塞尔维亚草原植物群的分布表明 Deliblato Sand 和 Mt Fruška Gora 是多样性的中心。该研究表明，在规划草原物种保护时，必须考虑环境因素的累积效应。