Suspended particulate matter (PM) constitutes a major problem in urban areas. Air purification of polluted cities is critical for protecting the increasing population. PM deposited on leaves can be an effective method of air quality amelioration. However, there are several factors involved, either favoring or hindering the PM capture. In this revision, we synthesized the current information about PM plant retention: plant features, consequences, and the relation with the urban environment. We also propose to use a knowledge-based planning framework to designate zones with similar characteristics across the city and to select the vegetation according to the necessities of each of these zones. Since available information regarding the best plant species to retain PM is sometimes contradictory, the application of a knowledge-based framework could be useful to focus future research on field conditions.

悬浮颗粒物（PM）是城市地区的主要问题。污染城市的空气净化对于保护不断增长的人口至关重要。沉积在叶子上的PM是改善空气质量的有效方法。但是，涉及多个因素，无论是有利于还是阻碍了PM的捕获。在此修订版中，我们综合了有关PM植物保留的当前信息：植物特征，后果以及与城市环境的关系。我们还建议使用基于知识的规划框架来指定整个城市具有相似特征的区域，并根据每个区域的必要性选择植被。由于有关保留PM的最佳植物种类的可用信息有时会相互矛盾，