Urban community gardens are potentially important sites for urban pollinator conservation because of their high density, diversity of flowering plants, and low pesticide use (relative to agricultural spaces). Selective planting of attractive crop plants is a simple and cost-effective strategy for attracting flower visitors to urban green spaces, however, there is limited empirical data about which plants are most attractive. Here, we identified key plant species that were important for supporting flower visitors using a network-based approach that combined metrics of flower visitor abundance and diversity on different crop species. We included a metric of ‘popularity’ which assessed how frequently a particular plant appeared within community gardens. We also determined the impact of garden characteristics such as size, flower species richness, and flower species density on the abundance and diversity of flower visitors. Two plant species, Brassica rapa and Ocimum basilicum were identified as being particularly important species for supporting flower visitor populations. Flower species richness had a strong positive effect on both the abundance and diversity of flower visitors. We suggest that gardeners can maximise the conservation value of their gardens by planting a wide variety of flowering plants including attractive plants such as B. rapa and O. basilicum.

中文翻译：

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如果您进行种植，它们就会来：量化外来植物对社区花园中从事冬季活动的花卉游客的吸引力

城市社区花园由于其高密度，开花植物的多样性和农药使用量低（相对于农业空间）而成为潜在的城市传粉媒介保护重要场所。吸引人的作物的选择性种植是一种吸引花客到城市绿地的简单且经济高效的策略，但是，关于哪种植物最吸引人的经验数据有限。在这里，我们使用一种基于网络的方法（该方法结合了不同农作物物种上花客数量和多样性的指标），确定了对支持花客至关重要的关键植物物种。我们纳入了“受欢迎程度”指标，用于评估特定植物在社区花园中出现的频率。我们还确定了花园特征（如大小，花卉种类丰富，和花的种类密度对游客的丰富度和多样性的影响。两种植物小白菜和罗勒叶被认为是支持花客种群的特别重要的物种。花卉种类的丰富度对访客的丰富度和多样性都有很强的积极影响。我们建议园丁通过种植各种各样的开花植物来最大限度地发挥其花园的保护价值，其中包括吸引力的植物如B. rapa和O. basilicum。