Tree Decay An Expanded concept - New York State Envirothon - Home
TreesCount! 2015: Mapping Every Street Tree in New York City
-
Upload
arbor-day-foundation -
Category
Environment
-
view
553 -
download
0
Transcript of TreesCount! 2015: Mapping Every Street Tree in New York City
MAPPING EVERY STREET TREE IN
NEW YORK CITY
Liam Kavanagh
First Deputy Commissioner
City of New York Parks & Recreation
Partners in Community Forestry
Denver, Colorado
November 19, 2015
• Street trees last year:
19,000 planted
115,000 pruned
12,000 removed
New York City Overview
2
• 1 million trees planted 2007 - 2015
• 21% canopy cover (7 million trees)*
• 29,000 acres of parkland (14% of land area)
7,500 acres forest and upland
2+ million landscape trees
592,000+ street trees
2,200 greenstreets
*based on field observations from 2013 and modeled data from 2008. From draft report from the U.S. Forest
Service, The Urban Forest of New York City, by Nowak, Dave et. al., expected publication early 2017
Trees Count! 2015
NYC Street Tree Census Impacts
1995:
• 30-day dead tree removal customer service
commitment
• Justification and funding for a block pruning
maintenance program
2005:
• Quantified and valued ecological services – more
than $121 million annually
• Directly led to MillionTreesNYC and a massive
expansion in the number of citizen tree stewards
3
?
Trees Count! 2015
2005
• Paper field data collection with optional desktop
data entry for volunteers
• Trees located by address and cross streets
• Address based look-up tables integrated with GIS
(ForMS)
1995
• Paper field data collection
• Trees located by address and cross-streets
• Tabular database to manage work (Tree
Manager)
Technology and Trees
4Trees Count! 2015
Trees Count! 2015
…to this in 2015
address-based (hit or miss) tree location
TreeKIT survey method (precise) tree location
5
From this in 2005
Mapping Method
Technology and Trees 2015
• Web-based mobile field data collection
• Trees located using traditional linear survey methods (TreeKIT)
• Data managed on GIS-based web application (ForMS 2.0)
Management tool
Trees Count! 2015 6
Advantages to 2015 Survey Method
• Simpler than a GPS unit.
• More consistent than heads-
up digitizing.
• Collects highly standardized,
spatially accurate data with
little training
• Has been widely tested and
proven to be easy for
volunteers to use
Trees Count! 2015 7
• Location (XY)*
• Alive / Dead / Stump
• Size
• Tree Species
• Overall Health
• Evidence of Stewardship
• Tree Guards
• Sidewalk Condition
• Tree Problems (root / trunk
/ branch)
TreesCount! 2015 Data Collected
Trees Count! 2015 8
TreesCount! 2015 Web Platform
Trees Count! 2015 9
TreesCount! 2015 Web Platform
Trees Count! 2015 10
Preliminary Results (Manhattan)
Tree SpeciesTree Condition
Trees Count! 2015 11
Preliminary Results (Manhattan)
Signs of StewardshipDiameter Distribution
12
NYC Street Tree Map
13
• Stewardship map will
link and coordinate
public tree care actions
with municipal forest
management through a
shared map of NYC’s
street trees
Trees Count! 2015
14