4501 Circle 75 Parkway Suite f-6320 Atlanta, ga 30339 (770) 953-4143 Table of Contents
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- Appendix A – Data Collection Procedures and Descriptions
- Appendix B – CITYgreen Analysis Data Sheets
ReferencesAmerican Forests. 1996. Urban Ecological Analysis for Atlanta, Georgia. American Forests. Washington, D.C. Energy Information Administration. 1994. Reducing Home Heating and Cooling Costs. SR/EMEU/94-01. Department of Energy. Washington, D.C. Huang, Joe, Ronald Ritschard, Neil Sampson, Haider Taha. 1992. Cooling Our Communities: A Guidebook on Tree Planting and Light-Colored Surfacing. U.S. Environmental Protection Agency, Office of Policy Analysis. Washington, D.C. McPherson, E. Gregory, Paul Sacamano, Steve Wensman. 1993. Modeling Benefits and Costs of Community Tree-Planting in 12 U.S. Cities. U.S. Department of Agriculture, Forest Service. Washington, D.C. McPherson, E. Gregory, David J. Nowak, Rowan A. Rowntree, eds. 1994. Chicago’s Urban Forest Ecosystem: Results of the Chicago Urban Forest Climate Project. General Technical Report NE-186. U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. Radnor, PA. Pacific Meridian Resources. 1998. Macon-Bibb County Tree Canopy Change Detection Study. Pacific Meridian Resources. Atlanta, GA. Southern Company. 2000. Georgia Power Residential Service Schedule: R-13. Southern Company. Atlanta, GA. U.S. Census Bureau. 1999. Metropolitan Area Population Estimates for July 1, 1998 and Population Change for April 1, 1990 to July 1, 1998. Report MA-98-1. Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC. Appendix A – Data Collection Procedures and DescriptionsData collected during the ground-truthing phase was based on the following criteria: Tree Inventory Windows/Air Conditioners: Windows at least 2 x 3 feet in size and air conditioners were located and marked on the inventory maps by a “W” and “AC” correspondingly. Public / Private: Each tree inventoried was recorded as either located on public or private property and was assigned a “B” for public trees or “V” for private trees. Species Identification: Trees were identified by genus and/or species. Columnar species were noted. If all species in the genus had similar leaf area and tree characteristics, therefore not affecting light or water-filtration rates, just the genus was recorded. If the tree characteristics were significantly different among species, each species was recorded separately. Each tree species was recorded using the abbreviations as established by American Forests. Diameter Class: Tree diameters were measured at 4.5 feet above the ground and were recorded within 2 inches. Diameter measurements were also entered according to 10-inch classes as follows: 1 = <10 inches 2 = 10-20 inches 3 = >20 inches Height Class: Tree heights were estimated and recorded to the nearest height class: 1 = <15 feet 2 = 15-35 feet 3 = >35 feet Reduced Height: Trees that had been topped were recorded “Y,” those not topped were recorded as “N.” Overall Health Condition: Each tree’s overall health was evaluated by examining its twig growth, presence of epicormic sprouting, crown, trunk, and roots. The tree’s health was then rated according the following guidelines: 1 = Very poor, no new twig growth, heavy sprouting Crown – more than 50% dead or dying Trunk – large cavities, girdled Roots – evidence of trenching or cutting within 5 feet of trunk base 3 = Fair, moderate twig growth, some sprouting Crown – some evidence of damage, poor pruning, insect/disease problems Trunk – some evidence of damage, cambial layer penetrated, not girdled Roots – space confined by physical structures 5 = Excellent, substantial twig growth, no sprouting Crown – full, uniform, no evidence of damage or insect/disease problems Trunk – no evidence of damage Roots – no evidence of damage, not confined by physical structures Conflicts: Conflicts with trees were listed according to the following guidelines: 1 = Potential problem with overhead utilities 2 = Existing problem with overhead utilities 3 = Building, other structure 4 = Sidewalk, curb 5 = Other tree Groundcover: Groundcover underneath the tree’s dripline was listed according to the following criteria: 1 = Shrub 2 = Grass 3 = Pavement 4 = Exposed soil 5 = Mulch Building Inventory Land Use: Each building inventoried was recorded as a residence, business, commercial facility, industrial complex, garage, or shed. Building Age: Approximate age for each building was recorded using maps from the city planning/zoning maps. Building Material: The major building construction material was identified and recorded. Building Floors: The number of floors in each building was identified and recorded. Overhangs: The length of building’s roofs were estimated and recorded to the nearest inch. Roof Color: The color of the roof on each building was identified and recorded. Wall Color: The color of the walls on each building was identified and recorded. Impervious Surface Inventory Land Use: Each impervious surface inventoried was recorded as a roadway, sidewalk, driveway, tennis court, or parking lot. Impervious Surface Type: The surface material of each impervious surface, either concrete or asphalt, was identified and recorded. Impervious Surface Color: The color of each impervious surface was identified and recorded. Grasslands Inventory Land Use: Each grassland area was inventoried and its use was recorded as a lawn, park, cemetery, or golf course. Grassland Type: The type of each grassland area, either Bermuda, Centipede, or Zoysia, was identified and recorded. Grass Height: The height of each grassland area was estimated and recorded to the nearest inch. Maintenance: The maintenance of each grassland area was identified as either “Y” for being mowed or “N” for not being mowed. Erosion Problems: Erosion problems for each grassland area were identified as either “Y” for being having some erosion or “N” for not having any erosion problems. Appendix B – CITYgreen Analysis Data Sheets
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