Assessing canopy cover over streets and sidewalks in street tree populations

摘要

Total canopy cover and canopy cover over street and sidewalk surfaces were estimated for street trees in Davis, California, U.S. Calculations were made using simple trigonometric equations based on the results of a sample inventory. Canopy cover frompublic trees over streets and sidewalks varied between 4 percent and 46 percent by city zone, averaging 14 percent citywide. Consideration of land use, planting locations, and age distribution suggests that 25 percent coverage of streets and sidewalks is an attainable goal for typical city zones.