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Street Tree Inventory Report. Presented by John Warner, CF Urban District Forester Texas Forest Service Conroe, TX September, ?? 2007. Shenandoah, Texas. System Basics. Texas Community Tree Inventory system (TXCTI) Based on MCTI and STRATUM models developed by the USDA Forest Service.
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Street Tree Inventory Report Presented by John Warner, CF Urban District Forester Texas Forest Service Conroe, TX September, ?? 2007 Shenandoah, Texas
System Basics • 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)
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
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.
Methods • Data collected • Species • Size (6” classes) • Condition • Maintenance needs • Clearance/safety • Planting sites
Results • Statistics • N/A for Shenandoah; actual tree counts provided • Stocking • 999 total street trees • 73% stocking • Up to 566 public planting spots • Up to 292 private planting spots
Results • Species • 38 total • Top five species make up two-thirds of trees • Crapemyrtle is most common non-native species • Genus • Pines and oaks make up over half of trees
Results • Size • Over 50% young trees • Only four (4) old trees • Loblolly pine, water oak, and sweetgum are maturing
Results • Condition • Two-thirds of trees are in good condition • 27% of trees rate as fair • Few poor or dead trees
Results • Maintenance • 59% need routine care • 36% need training • 40 trees need removal
Results • Clearance • Only three (3) trees obstruct traffic signals or signs • Only eight (8) trees have limbs that encroach into safety zones over streets
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
Recommendations • Short-term (1-3 yrs.) • Plant species other than pines • Train staff to prune young trees • Craft a public tree ordinance • Conduct annual Arbor Day event • Attain Tree City USA status • Long-term • GIS inventory of public trees • Street tree master plan • Create “green infrastructure” funding mechanism