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首页> 外文期刊>Acta Societatis Botanicorum Poloniae >Geobotanical distinction using the floristic method: example of the Polish Pomerania
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Geobotanical distinction using the floristic method: example of the Polish Pomerania

机译：使用植物学方法进行地质植物学区分：波兰波美拉尼亚的例子

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In the geobotanical division of Poland, Pomerania was treated as a separate subdivision, divided into “coastal plains” and the “Pomeranian uplands” or, in the newest regionalization, the “Pomeranian division”. The goal of this paper is to determine how well the distinctiveness of Pomerania is floristically justified. A total of 1,467 native species occur within the area of Pomerania, representing 57.5% of the native flora of Poland. Fifty-seven species distinguishing Pomerania were selected and their phytogeographic features were discussed and compared to the Polish vascular flora. The distribution of 32 species (56.1%) is characterized as (sub)Atlantic/oceanic. Of the taxa that characterize Pomerania, 47.45% represent the northern element of the Polish flora and 7.01% the western element; species of the eastern element do not exist in Pomerania. The maximum entropy (MaxEnt) method was used for collective distribution analysis of the 57 selected taxa. The analyzes were performed using 41 environmental variables. All the species analyzed are strictly linked to the western and the North Atlantic part of Europe. Statistical evaluation of the MaxEnt model yielded an AUC value of 0.75 for both training and test. The most important environmental variables are minimum high (min_h), temperature annual range (bio07), and mean temperature of driest quarter (bio09). The results of the MaxEnt analysis allowed us also to verify the boundaries of the region and suggest new criteria for them. The southern limit of Pomerania should run along the northern boundary of the terminal moraine belt. Also, the area east of the Vistula does not contain abundant representatives of the flora characteristic for Pomerania. The results of the present study may be used for a broader discussion on the revision of the geobotanical division of Poland, at least in its northern part.
机译：在波兰的地质植物区划中，波美拉尼亚被视为一个单独的细分，分为“沿海平原”和“波美拉尼亚高地”，或者在最新的区域划分中，称为“波美拉尼亚师”。本文的目的是确定波美拉尼亚的独特性在植物学上的合理性。在波美拉尼亚地区共有1,467种本地物种，占波兰本地植物的57.5％。选择了57种能够区分波美拉尼亚的物种，并讨论了它们的植物地理特征，并将其与波兰维管植物区系进行了比较。 32种（56.1％）的分布特征是（亚）大西洋/海洋。在代表波美拉尼亚的分类单元中，波兰植物区系的北部元素占47.45％，西部元素占7.01％。波美拉尼亚不存在东部元素的物种。使用最大熵（MaxEnt）方法对选择的57个分类单元进行集体分布分析。使用41个环境变量进行分析。分析的所有物种都与欧洲的西部和北大西洋部分紧密相连。对于培训和测试，MaxEnt模型的统计评估得出的AUC值为0.75。最重要的环境变量是最小高温（min_h），温度年度范围（bio07）和最干燥季度的平均温度（bio09）。 MaxEnt分析的结果还使我们能够验证区域边界并为它们提出新的标准。波美拉尼亚的南端应沿着冰m终带的北边界延伸。此外，维斯杜拉以东的地区没有大量代表波美拉尼亚的植物区系。本研究的结果可用于至少在波兰北部对地质植物区划的修订进行更广泛的讨论。

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