Service Description: This layer contains preliminary calculations for Tucson's Tree Equity Scores, calculated using American Forests' methodology.
Service ItemId: a1bde2962cfe4009a409780c4cf7d2b9
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
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Description: Census data (2019 ACS) was obtained using ESRI’s Enrich tool, which estimates census variables on irregular polygons.
The scores are a metric that informs the city on how well we are delivering equitable tree cover to all our residents. The score combines "measures of tree canopy cover need and priority for trees in urban neighborhoods. It is derived from tree canopy cover, climate, demographic and socioeconomic data." (American Forests, 2020)
Definitions:
Tree Equity Score (0-100): A score of 100 means tree equity has been achieved in this neighborhood. Lower scores indicate neighborhoods in greatest need of improved canopy. This metric is only calculated in populated neighborhoods.
Priority Index (0-1): Higher scores indicate higher vulnerability. Includes 5 equally weighted variables:
- Income: Percentage of population below 200% of poverty
- Employment: Unemployment rate
- Race: Percentage of people who are not white non-Hispanic
- Age: Ratio of seniors and children to working-age adults Climate:
- Urban Heat Island severity Heat Severity (0.43-9.26): Indicates the deviance from mean surface temperatures in urbanized areas. i.e., heat severity 9 indicates the neighborhood is, on average, 9°F hotter than the mean surface temperature in Tucson.
Purpose This layer was developed to assist the Green Stormwater Infrastructure identify vulnerable neighborhoods and focus GSI projects in those neighborhoods.
Dataset Classification
Level 0 - Open
Known Uses
Tree Equity Scores Dashboard https://arcg.is/1598H
Known Errors
Census data used in the calculation of the Tree Equity Scores were derived from ESRI's Enrich tool, which creates an estimate of census It was noted upon on the creation of this layer that there are several neighborhoods with inaccurate estimations of population count.
Data Contact
Information Technology Department
IT_GIS@tucsonaz.gov
Publisher Contact
Information Technology Department
IT_GIS@tucsonaz.gov
Update Frequency
As new tree canopy data is released (rarely)
Copyright Text: Published by City of Tucson Information Technology Department, GIS Services, GIS_IT@tucsonaz.gov
Spatial Reference: 2868 (2868)
Initial Extent:
XMin: 1033983.89599946
YMin: 442711.800727537
XMax: 1052262.99122937
YMax: 450042.901920013
Spatial Reference: 2868 (2868)
Full Extent:
XMin: 965352.133202098
YMin: 361898.932086617
XMax: 1075082.50885827
YMax: 481554.973753281
Spatial Reference: 2868 (2868)
Units: esriFeet
Child Resources:
Info
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Supported Operations:
Query
ConvertFormat
Get Estimates
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