Urban Forest Strike Team Team Leader Training Data Collection Methods Providence Forge, VA July...
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Transcript of Urban Forest Strike Team Team Leader Training Data Collection Methods Providence Forge, VA July...
Urban Forest Strike TeamTeam Leader Training
Data Collection Methods
Providence Forge, VAJuly 14-15, 2008
Data Collection Methods
Protocol Paper Electronic
SDAP Preferred Difficult
Risk Assessment
(time sensitive)As needed Preferred
Tree Planting
(no rush usually)As needed Preferred
Data Collection Methods
Method Pro Con
Paper
Intuitive
Flexible
Quick to set-up
Quick data collection (up front)
Legibility issues
Data entry time (back end)
Reporting concerns
Electronic
One-time data entry
Output easily read
Files easily stored/recovered
Requires training to use
Rigid structure
Time needed to set-up
Paper Data Collection Forms
Protocol Paper Format Notes
SDAP EstablishedBased on FEMA criteria
Risk Assessment
Highly variableBased on community needs
Tree Planting Highly variableBased on community needs
Risk Assessment• Requirements
– Species (genus)– DBH– Physical address– Remove/prune– Justification– Immediate action– Not storm related– Notes
• Variables– “from street”/”to street”– Location on property– Public/private– Inspect further– Corrective prune– Cable/brace– Others
Tree Planting Site
• Requirements– Physical address– Tree lawn size– Utilities present– Tree type– Notes
• Variables– Location on property– Public/private– Signage present– Other
SDAP data entry and reporting exercise
W. Church St. ABlack Bottom Rd. Main St.
ROW=30
1 6/27/08Length = 600 ft.
Community ValuesFor Williamsburg, VA
Total street miles = 4Removal cost/hr = $75Pruning cost/hr = $75
Brush cost/cu yd = $15
Electronic Data Collection
• Data can be collected on:– Personal Digital Assistant (PDA’s)
• i-Tree software, Pendragon, mobile Excel
– Data recorders / field PC’s (Allegro CX)• Spreadsheet application
– Data recorders fitted with GPS antennae• Data dictionary, spreadsheet
– GPS units (i.e. Trimble, Landmark, etc.)• Data dictionary, forms, features
Data Dictionaries
• Trimble’s name for a way to specify what is at a spatial location
• Data dictionaries use attributes to describe features
• Feature – the thing you are locating spatially (a tree, a trail, an area)
• Attribute – the things that describe that feature
Data Dictionaries
• Features– Tree
– Planting site
• Attributes– Species– DBH– Remove?
– Tree lawn– Utilities?– Tree type
Attributes describe Features
Feature
Attributes
ArcMap Street and Tree layers
Creating a Data Dictionary
Think of your data dictionary as a paper data sheet
Feature
Attributes
Creating a Data Dictionary Using GPS Pathfinder Office
Menu
Displays drop-down box showing only specific attributes that you designate
Use this if you have certain tree species you want to capture, relatively few streets that you are working, or any time you will have repeatable entries
Numeric
Displays only numbers on the data field
Use this for tree id’s, street addresses, diameters, etc.
Text
Displays only text in the data field
Use this for street names, species codes, notes, etc.
Attribute types