In a study of 13 French urban green spaces, visitors reported improved mental restoration in spaces where they perceived more mixing of vegetation like woodlands, shrubs, herbaceous areas, flower areas, water areas, and mineral surfaces, as opposed to homogeneous landscapes with few plant species.
Meyer-Grandbastien, Alice, Françoise Burel, Emmanuelle Hellier, and Benjamin Bergerot. “A Step Towards Understanding the Relationship Between Species Diversity and Psychological Restoration of Visitors in Urban Green Spaces Using Landscape Heterogeneity.” Landscape and Urban Planning 195 (2020) https://doi.org/10.1016/j.landurbplan.2019.103728
