The vast majority of floristical and coenological studies focus on the natural vegetation and its remnants in urban environments; however, there is an increasing interest in the systematic exploration of built environments. This survey of the inhabited areas of Budapest launched in 2018 applied a new and detailed methodology. The territorial units of the survey were street sections, where the presence of vascular plants was recorded in ecologically different habitats separately. We laid down the foundations to establish new habitat categories for the habitat classification and mapping of urban ecosystems using a different approach than the Hungarian habitat classification system (ÁNÉR). The method enables us to study the flora of urban ecosystems in detail. We established 18 urban habitat categories, surveyed more than 27,000 survey units and registered 647 spontaneously growing plant species in Budapest. Our survey evinced the spontaneous occurrence of 193 alien species in Budapest, 81 of them are data deficient, while 10 of them are new introductions in Hungary. 53.9% of the aliens are cultivated frequently in Hungary.

中文翻译：

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布达佩斯（匈牙利）人为城市地区栖息地分类方法

绝大多数植物学和生态学研究都集中在城市环境中的自然植被及其残余物上；然而，人们对建筑环境的系统探索越来越感兴趣。这项于 2018 年启动的布达佩斯居民区调查采用了一种新的详细方法。调查的地域单位是街道部分，其中维管植物的存在分别记录在生态不同的栖息地。我们使用不同于匈牙利栖息地分类系统 (ÁNÉR) 的方法为城市生态系统的栖息地分类和绘图奠定了新的栖息地类别的基础。该方法使我们能够详细研究城市生态系统的植物群。我们建立了 18 个城市栖息地类别，调查了超过 27 个，000 个调查单位，在布达佩斯登记了 647 个自发生长的植物物种。我们的调查表明，布达佩斯自发出现了193种外来物种，其中81种数据缺乏，10种是匈牙利新引进的。53.9%的外国人在匈牙利经常种植。