A shade programme should consider who spends time in exposed places and whether they have alternatives. A planting target spread evenly across a neighbourhood can overlook a heavily used waiting area or a difficult route with nowhere to rest.
Map exposure alongside use
Observe streets and public spaces during relevant hot periods. Record where people wait, how long they stay and what shade already exists. Include routes used by older people, children and people with limited mobility without assuming everyone in a group has the same needs.
EPA guidance identifies vegetation as a way to reduce urban heat. [1] Deciding where to invest requires local evidence of exposure and a check of what each site can support.
Compare feasible responses
Protect suitable existing canopy first. Assess planting space, water availability and maintenance before proposing new trees. Where trees cannot establish or will take time to provide useful cover, evaluate an appropriate shelter or another immediate response.
Discuss priorities with users and explain the choices publicly. Revisit the same locations after changes. Report improvements in usable shade and outstanding gaps, alongside planting and construction totals.
Sources and further reading
- US Environmental Protection AgencyUsing trees and vegetation to reduce heat islands
- UN-HabitatHer City: inclusive urban planning, fourth edition (PDF)