Oct 14th, 2026
Time: 17:30
Topic: From Shade to Accessibility: What GIS Misses on the Ground
Speaker: Hengyin Liao
Abstract: GIS can tell us where shade, cooling resources, and accessible routes are located, but it cannot always tell us whether people can comfortably and safely reach or use them.
Building on my UBC shade equity modelling work, I will share how this research evolved into Our Neighbourhood Cooling Map, a community-based project in Vancouver, and how my experiences over the summer led me to explore broader questions around spatial accessibility.
Through community engagement and conversations with organizations working with older adults, people with disabilities, and other community groups, I have been qualitatively exploring different mobility barriers, everyday accessibility challenges, and the role of existing community programs and support services.
This presentation will share some of these early observations, the limitations of conventional GIS accessibility measures, and emerging questions about how spatial data, community knowledge, and existing resources might be better connected.
Rather than presenting a completed accessibility study, I hope to share the evolution of this work, exchange ideas, and connect with others interested in community-based GIS, accessibility, and climate resilience.
Bios: Hengyin Liao is a graduate of UBC's Master of Geomatics for Environmental Management program. Her work focuses on GIS, spatial accessibility, urban climate resilience, and community-engaged mapping. Her graduate capstone examined shade distribution and equity at UBC, which she later extended into Our Neighbourhood Cooling Map, a community-based initiative connecting spatial analysis with local knowledge and everyday accessibility. She is currently exploring how GIS can help identify mobility barriers and connect communities with relevant resources and support.


