The Urban Forest Map is a project in San Francisco, California that allows residents to enter information online by finding a tree on Google Earth, marking it and entering information regarding the street tree. It's a great way to build an urban tree inventory through volunteer efforts. This project is supported by governments, non-profits and businesses. It not only helps catalogue (with species, diameter at breast height and other info) the immense urban canopy the city has but it also provides data on the ecological services that the trees provide to the area. Check it out below:
Part of the reason this project was initiated was that canopy cover was extremely low (2.5% in 2008), and this inventory has helped underline this and show where new trees are most needed. You can see all the trees in google map in either a street view or satellite view. Pretty impressive!
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