"Regardless of what the papers are debating, it is clear that climate change is here," said Shaw, during a seminar held as part of the Ecobuild exhibition last week.
"We need to use green infrastructure to create places with lower temperatures and that are better places to live."
Shaw explained that public spaces would become "increasingly important" as people used outdoor places in different ways.
"We are no longer designing for a climate that will be with us for generations," he added. "It will be in a continual state of flux, we expect."
The Landscape Institute ran a series of sessions exploring the benefits of landscape in housing development.