04 Aug '11, 8pm

PhillyTreeMap: Crowdsourcing the urban forest

PhillyTreeMap: Crowdsourcing the urban forest

PhillyTreeMap helps Philadelphia's urban forest grow. Photo: Danny Fowler Trees do a lot for cities . They soften hard, lifeless spaces with a bit of green, reduce the urban heat island, scrub pollutants, filter dust and dirt from the air, and more. They are, in other words, an incredibly valuable resource, and one we should be keeping a close eye on. But cataloguing the trees within a city -- tens or even hundreds of thousands of them -- can be a gargantuan and expensive undertaking. Enter PhillyTreeMap . PhillyTreeMap is a web mapping application that solicits citizen input, similar to the successful OpenStreetMap . Robert Cheetham started the project two years ago when he won a government grant for the idea. Since then, PhillyTreeMap has grown to encompass a database of over 144,000 Philadelphia trees and an open source code base which Cheetham and his company, Azavea, ...

Full article: http://www.grist.org/cities/2011-08-04-phillytreemap-crou...

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