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Street Tree Inventory Report
Presented by
John Warner, CFUrban District ForesterTexas Forest ServiceConroe, TX
September, ?? 2007
Shenandoah, Texas
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Texas Community Tree Inventory system (TXCTI) Based on MCTI and STRATUM models developed by the
USDA Forest Service Sample of street trees Focused on basics
(species, size, safety) Counts what isn’t there
(planting sites)
System Basics
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Methods
5-15% random sample of street segments Uses TIGER files or local GIS
layer Attach image or close-up of
blockside for field crew For Shenandoah, 100% of
blocksides surveyed
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Methods
Survey strategy TFS Forester collects data, in
cooperation with municipality, tree board volunteers, or other local group
Depending on sample mileage, 1-3 crews can finish in a day or two.
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Methods
Data collected Species
Maintenance needs Clearance/safety Planting sites
Condition
Size (6” classes)
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Up to 566 public planting spots Up to 292 private planting spots
Results
Statistics N/A for Shenandoah; actual
tree counts provided
Stocking 999 total street trees 73% stocking
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Results
Species
Genus
38 total Top five species make up
two-thirds of trees Crapemyrtle is most common
non-native species
Pines and oaks make up over half of trees
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Results
Size Over 50% young trees Only four (4) old trees Loblolly pine, water oak,
and sweetgum are maturing
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Results
Condition Two-thirds of trees are in
good condition 27% of trees rate as fair Few poor or dead trees
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Results
Maintenance 59% need routine care 36% need training 40 trees need removal
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Results
Clearance Only three (3) trees
obstruct traffic signals or signs
Only eight (8) trees have limbs that encroach into safety zones over streets
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Results
Replacement Value Total value is almost $1
million $981 average Crapemyrtle values are low
($98/tree) Loblolly pine values will
increase dramatically over time
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Create “green infrastructure” funding mechanism
Attain Tree City USA status
Recommendations
Short-term (1-3 yrs.)
Long-term GIS inventory of public trees
Train staff to prune young trees
Plant species other than pines
Craft a public tree ordinance Conduct annual Arbor Day event
Street tree master plan
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Next Step?