EUS 202 Lecture Notes - Food Security, Impervious Surface, Windbreaker
Document Summary
Green roofs: insulation; trees: shade, low energy cost, windbreaker; replacing sod: saves water. Absorbs more heat, decreases urban heat island effect = less air conditioning needed; reduce uhi effect. Captures/filters rain water; use that water for other uses (irrigation,etc. ) Because vegetation uses c in photosynthesis it can trap pollutants= improvement of air quality. Because urbanization causes habitat fragmentation and can have serious impacts it can provide habitat and reduce impacts of fragmentation. Impervious surface=^runoff; canopy=^infiltration rate & recharge of ground water, decreased runoff rate; green infrastructure=capture & filter storm water. ^ food security, social capital, connection to community. Greening parks and open spaces trying to provide multiple services: recreation, education, habitat, farming, community gardens, etc. to vacant lots, traffic island, roof tops, abandoned industrial properties, etc. Queen"s park xeriscape garden: 140 drought resistant plant species, 70% reduction in costs because of maintenance, operating, watering. Loulet park, north vancouver: underutilized park transitioned to an urban farm.