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Data Requirements:
· 1999 ATLAS 7.5 Meter image data provided by the ARC Program at Brown University and processed at URI;
· Rhode Island Geographic Information Systems (RIGIS): 1995 Land Use/Cover Data, 1: 5,000 1997 digital orthophotography;
· City of Providence: Parcel boundaries and assessor's data, neighborhood planning boundaries;
· City tree inventory;
· Field data gathered by dedicated volunteers.

Orthophotograph
1995 Land Use

There are two levels to the analysis. The Citywide Forest Canopy Characterization involves using remote sensing data (7.5 meter resolution ATLAS images taken from a Lear Jet) to measure land cover and vegetation types citywide. This broad analysis will provide an estimate of tree canopy, lawns, and impervious surfaces such as rooftops and pavement. Results will then be used to inform the more detailed Neighborhood Analysis. The Neighborhood Analysis begins with classifying typical land use/tree canopy combinations by neighborhood using results from the Citywide analysis, previous studies, the City Forester's street tree inventory, and local knowledge.

ATLAS Image of Greater Providence

Image of Typical Neighborhood Analysis

Fifteen to twenty representative sites throughout the City will then be modeled using American Forest's CITYgreen GIS software (Urban Ecosystem Analysis). Results from this detailed measurement and analysis will be extrapolated over the entire City using a combination of digital land cover and boundary data.

The final step will involve estimating economic benefits under various potential scenarios as well as assessment of urban forestry needs in the 25 neighborhoods. Measured benefits include stormwater infrastructure avoidance, pollutant reduction, and energy savings.

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