MAPPING THE STRATUM DATA MODEL

Transcription

1 GIS AND THE URBAN FOREST MAPPING THE STRATUM DATA MODEL Society of Municipal Arborists 45 th Annual Conference Savannah, GA Paul Graham, Urban Forester City of Florence, AL

2 Outline Community Forestry So what is the Problem? Survey methods/execution Maps & Analysis

3 Community Forestry Florence and the surrounding communities have strong ties to outdoor activities and recreation; i.e. team athletics, music and arts festivals, hunting, fishing, boating, agriculture, and gardening Knowing your Community ga de g Hospital, TVA City of Florence, Alabama Pop. 34,100 1/3 demographic split (0-18, 18-40, 40+) Primary employers: University of North Alabama, Eliza Coffee Memorial Industries: Agriculture, light manufacturing, tourism

4 Community Forestry Assets Strong Tree Commission (22yrs) Highly Active Volunteers Master Gardeners, Men s Garden Club, Wildflower Society Green minded Mayor and Council

5 So what is the Problem? The problem was mine, due to lack of local knowledge. Information is transferred in the oral tradition. Do you know Bill Parsons? He was the local game warden from about 1965 until Take Hwy 20 to Mud Rd turn left Have historical i district i t data on paper (1988) No knowledge of resource size, composition or condition No management plans Weak Tree Ordinance Previous failures of substantial proportion documented in local paper

6 So what is the Problem? The project manager had completed one tree survey and participated in two others. A purely digital it data collection and management framework were required for data integrity and validity Foundation needed d for resource management planning Unable to quantify tangible and intangible values Unable to market or sell the resource as an asset Management desired d a fact based argument and methods that are reproducible

7 Survey/Inventory y Objectives Short-Term Goals Geo-Referenced tree records STRATUM Compatible Dataset Long-term data storage and retrieval Symbolize and render data and results

8 Survey/Inventory y Objectives Intermediate goals Transition from shape file to geodatabase model Data validation Data integrity Integration with Municipal Base/Project maps

9 Survey/Inventory y Objectives Long Term Goals Transition to a relational geodatabase model Custom queries and reports Work/request management Institutional memory

10 Inventory Execution Eleven student interns collect field data Forty hours training i and testing ti of species ID and measurement protocols Integrated E-compass & laser rangefinder training Faculty provided Equipment, Software, and guidance in geodatabase development

11 Inventory Execution Statistics Six months to complete field survey 36,172 trees were documented 26,497 trees are public trees 9,424 are private trees On average it took 2min 50sec to document each tree Value to the constituent Annual environmental benefits are valued at $5 Million. Every $1spent = $5.03 in environmental services. A public tree provides $ in annual benefit Each citizen receives $ in benefits from public trees.

12 Results and Analysis: STRATUM 96 + Individual reports 15+ Charts Cummulative Annual Benefits Citywide $2,790,904 $964,535 Florence, Alabama Annual Benefits of Public Trees by Species ($/tree) 11/8/2007 Species Energy CO2 Air Quality Stormwater Aesthetic/Other Total ($) Standard Error Loblolly pine (N/A) Common (N/A) Sugarberry (N/A) Kousa dogwood (N/A) Silver maple (N/A) Willow oak (N/A) Red maple (N/A) White oak (N/A) Callery pear (N/A) Northern white (N/A) Southern red oak (N/A) Post oak (N/A) Northern red oak (N/A) Baldcypress (N/A) American holly (N/A) Western red cedar (N/A) American elm (N/A) Sweetgum (N/A) Southern magnolia (N/A) Shumard oak (N/A) Pignut hickory (N/A) Eastern redbud (N/A) River birch (N/A) Pecan (N/A) Other street trees (N/A) $1,206,469 $91,597 -$44,482 Energy CO2 Air Quality Stormwater Aesthetic/Other

13 Map and Analysis: Audience Project Method and Results Poster series for academic review by GIS faculty (UNA) Benefit Summary Poster for State of City presentation Map Proposals For Publication (ERSI) Specific Resource and Benefit Analysis maps for Decision makers Misc.

14 Audience: UNA Purpose: Academic Methods

15 Audience: UNA Purpose: Academic Methods

16 Audience: UNA Purpose: Academic Methods

17 Audience: UNA Purpose: Academic Methods

18 Map Audience: Public Purpose: Introduction ti to Benefit Analysis

19 Map Audience: Publisher

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25 Map Audience: Decision i Makers

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31 Misc. Analysis

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34 Questions? Paul Graham, Urban Forester City of Florence, Alabama l