Investigations aimed at assessing agricultural activity in Molinia meadow and subsequent land abandonment on the species composition of plant cover, habitat characteristics, as well as regeneration of the Iris sibirica population were conducted in the year 2018 in the Gielniów Hummock (Southern Poland, Central Europe). The observations were carried out on two meadow complexes 1) subjected to disturbance by removal of plant cover, four-year cultivation of Zea mays L. (called postcultural meadow) and 2) unmanaged from at least 15 years (called abandoned meadow). In the abandoned meadow, advanced secondary succession was observed, while in the postcultural meadow the regeneration of meadow species inter alia Iris sibirica was noticed. The population of the aforementioned taxon presumably regenerated thanks to seedling recruitment and subsequent vegetative growth of juvenile individuals. The abundance of the population Iris sibirica was greater in the postcultural meadow. The number of leaf rosettes was greater in the abandoned meadow. The number of previous and current-year generative stems, as well as the number and dimensions of capsules, were similar in both study sites. The lower height of the leaves and generative stems of Iris sibirica in the postcultural meadow might be caused by the low height of plant cover and the lack of necessity of competition for light with neighbouring species. The obtained results lead to the promising conclusion that populations of endangered species Iris sibirica might regenerate in habitat of postcultural meadow, if not strongly destroyed (e.g. habitat of short-lived cultivation of annual species without pesticides).

2018年在GielniówHummock（波兰南部，中欧）进行了旨在评估Molinia草甸农业活动以及随后土地被遗弃的植物覆盖物的物种组成，生境特征以及鸢尾鸢尾种群更新的调查。 。在两个草甸复合体上进行了观测：1）因去除植物覆盖而受到干扰，玉米（Zea mays L. ）进行了为期四年的耕种（称为后文化草地），至少15年未受管理的（称为废弃草地）。在废弃的草地上，观察到高级次生演替，而在后文化草地上，草地物种尤其是鸢尾鸢尾的再生被注意到。归因于幼苗募集和随后的幼体营养生长，上述分类单元的种群可能再生了。在后文化草地上，鸢尾西伯利亚种群的丰度更大。在废弃的草地上，叶丛的数量更多。在这两个研究地点，前一年和当年的生成茎的数量以及胶囊的数量和尺寸均相似。后文化草地中鸢尾鸢尾的叶片和生成茎的高度较低，可能是由于植物覆盖高度低以及缺乏与邻近物种竞争光照的必要性所致。获得的结果导致了一个有希望的结论，即濒危物种的种群如果未被强烈破坏，鸢尾西伯利亚鸢尾可能会在后文化草甸的栖息地中再生（例如，没有农药的一年生物种的短命栽培栖息地）。