In order to make urban nature more diverse, vegetation and various tree species will be added to the built areas. Meadows, leaving decaying wood in place, and reducing grass mowing create more suitable habitats for a more diverse range of species, such as pollinators, than grasslands. The city improves the ecological quality and connectivity of meadows in its area and prevents overgrowth through management and grazing. When there is more decaying wood in green areas, the quality of the soil improves and the living conditions of fungi, mosses, insects, and bird species that depend on decaying wood in the city improve. The city supports soil diversity by leaving autumn leaves in suitable areas, favoring natural substrates, reducing impervious surfaces, and avoiding soil replacement. Diverse soil also offers health benefits to humans – contact with diverse soil, among other things, supports the development and functioning of a healthy immune system (Natural Resources Institute Finland 2020).
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