Tree equity rsd_edra
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Transcript of Tree equity rsd_edra
![Page 1: Tree equity rsd_edra](https://reader036.fdocuments.in/reader036/viewer/2022062708/558c99bdd8b42a84018b45d2/html5/thumbnails/1.jpg)
Continued inequity for urban ecosystem services
What will it take to achieve equitable tree canopy distribution in the City of Boston?
Rachel DanfordUniversity of Massachusetts, Amherst
May 30th 2013
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Urban Greening
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Agenda
• Urban trees • Current urban tree distribution • Methods• Five potential scenarios• Conclusions
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Urban trees - ecosystem services
Soil Conservation
Wildlife Habitat
Health Benefits
Community Enrichment
Energy Conservation
Carbon SequestrationWater Conservation
Beauty
Urban canopy
Environmental Justice
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Study Area
Traffic Analysis Zone (TAZ)•Commonly used for assessing traffic related data•Can be variable in size
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Urban tree distribution
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Scenarios
• Population projections• Tree planting potential
– On impervious surface– On pervious surface– Street trees
• Projected canopy loss• Equity (Gini Indices)
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Scenarios – “Current Trends”
• Canopy Cover – 28%• Equity ranking – 4• Projected canopy loss - 20,361 trees
• No investment in canopy• 7% population increase• 1% canopy loss
OUTCOMES
INPUTS
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Scenarios – “Metrofuture”
• Canopy Cover – 33%• Equity ranking – 3• Projected canopy added – 121,751 trees
• Canopy investment to 35%• Focus on “compact
growth areas”• 18% population increase• 2.6% canopy lossOUTCOMES
INPUTS
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Scenarios – “Grow Boston Greener”
• Canopy Cover – 32%• Equity ranking – 3• Projected canopy added – 102,285 trees
• Canopy investment to 35%• Add 100,000 trees to
“underserved” areas• 18% population increase• 2.6% canopy lossOUTCOMES
INPUTS
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Scenarios – “Green Equity”
• Canopy Cover – 39%• Equity ranking – 1• Projected canopy added – 365,076 trees
• Canopy investment to 40%• Focus on EJ communities
• 13% population increase• 1.58% canopy loss
OUTCOMES
INPUTS
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Scenarios – “All Trees”
• Canopy Cover – 40%• Equity ranking – 2• Projected canopy added – 420,392 trees
• Ecological availability• Plant trees in any available
planting site• 18% population increase• 2.6% canopy loss
OUTCOMES
INPUTS
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Conclusions
Equity can be improved!•Even Green Equity doesn’t approach true equity for EJ communities•Any scenario will improve equity over the status quo (Current Trends)
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Conclusions
There’s room for more!•Green Equity requires planting over 3x more trees than the current GBG initiative calls for•There’s potential to increase the overall canopy cover in Boston to 40%
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Conclusions
Trees aren’t the only answer– Green roofs/walls– Rain gardens– Native landscaping– Permeable paving
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What does it take to achieve equitable urban tree canopy distribution? A Boston case study.Rachel Danford, Chingwen Cheng, Michael Strohbach, Robert Ryan, Craig Nicolson, Paige Warren
NSF # BCS-0948984
Thank you!