Urban green spaces are often subject to intensive management and therefore only provide habitat for very few plant and animal species. Many studies have already proven that less intensive management of near-natural grassland habitats can increase species diversity, for example of butterflies. However, there is still a lack of knowledge as to what extent less intensive management of urban green spaces can promote urban butterfly diversity. Therefore, we examined parameters that determine the number of butterfly species in less maintained or even abandoned urban green spaces. We expected butterfly species richness and observation numbers to be affected by different management regimes. Butterfly surveys were carried out on 56 sites in the city of Hannover, Germany, in three consecutive years. The sites were subject to different management regimes. We explored parameters such as area size, the diversity of nectar plant species and habitat diversity for each site. A total of 34 species were recorded, with a minimum of 0 and a maximum of 17 species per site and year. The extreme drought and heat in 2018 clearly influenced the results of our study and this was reflected in massive decreases of observation numbers for some species. Less intensive management showed preferable effects in comparison to intensive management, but area size and nectar plants were more important factors influencing butterfly species richness and number of observations. Our results suggest that site parameters such as area size, nectar plant species richness or number of habitat types had stronger influences on butterflies than variations of extensive management. We conclude that less intensive urban green space management for good butterfly habitats is not a question of grazing, mowing or temporary abandonment, but instead must aim to increase nectar plant and habitat diversity.

城市绿地经常受到集约化管理，因此只能为很少的动植物物种提供栖息地。许多研究已经证明，对近乎自然的草地栖息地进行不密集的管理可以增加物种的多样性，例如蝴蝶。但是，仍然缺乏关于城市绿地的低强度管理在多大程度上可以促进城市蝴蝶多样性的知识。因此，我们研究了一些参数，这些参数确定了维护程度较低甚至废弃的城市绿地中蝴蝶种类的数量。我们预计蝴蝶种类的丰富度和观察数会受到不同管理制度的影响。连续三年在德国汉诺威市的56个地点进行了蝴蝶调查。这些场所受到不同的管理制度的约束。我们探索了每个区域的参数，例如面积大小，花蜜植物物种的多样性和生境多样性。总共记录了34种，每个站点和每年最少0种，最多17种。2018年的极端干旱和高温显然影响了我们的研究结果，这反映在某些物种的观测数量大幅减少上。与集约化管理相比，集约化管理的效果较差，但面积大小和花蜜植物是影响蝴蝶种类丰富度和观测数量的重要因素。我们的结果表明，与广泛管理的变化相比，诸如面积大小，花蜜植物物种丰富度或栖息地类型数量之类的站点参数对蝴蝶的影响更大。