Fast Fact Library
The Landscape Performance Series Fast Fact Library is a searchable collection of landscape benefits derived from published research. Each includes a citation and links to the full article when available.
This resource is intended to showcase landscape’s multiple and sometimes surprising environmental, economic and social benefits and to help you make the case for sustainable landscape solutions in your community, with your clients, or on Capitol Hill.
Know of additional research that would make a compelling Fast Fact? Help build the database by sending your suggestions to email@example.com.
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Temperature & urban heat island
The combination of green roofs and green walls (walls covered in vegetation, such as climbing vines) has the greatest effect in lowering ambient temperatures in typical urban “canyon”-like streets compared to no vegetation, green roofs only, and green walls only. This combination can achieve up to a 12.8˚C (23˚F) ambient temperature difference in a corridor in an arid climate, and 8.4˚C (15.1˚F) in a humid climate. Green roofs alone have the second greatest ambient temperature effect, likely due to roofs’ higher exposure to sunlight.
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