ARBORICULTURE ARBORICULTU & CONTENTS URBAN FORESTRY Volume 39, Issue 2, March 2013 Formerly the Journal of Arboriculture, 1975 – 2005 (Volumes 1 – 31) ® www.isa-arbor.com Kelley C. Dimke, T. Davis Sydnor, and David S. Gardner The Effect of Landscape Trees on Residential Property Values of Six Communities in Cincinnati, Ohio ..........................................................................................................................49 Abstract. The value of the urban forest as a component of the urban environment is significant. Trees provide both environmental and social benefits to urban dwellers. In many cities, financial support for urban forestry is on the decline. The objective of this research was to evaluate the impact trees have on property values of six communities (Bond Hill, Carthage, Cliſton, Hyde Park, Kennedy Heights, and North Avondale) of varying socioeconomic levels in Cincinnati, Ohio, U.S. Tax assessor records were obtained for property sales between the years 2000 and 2005. One hundred sites were randomly selected from each of the six communities. Data were collected from each site dur- ing the winter as well as the summer months. Dominant genus, caliper of dominant genus, estimate of tree cover, and overall property main- tenance were recorded. The hedonic method was used for this analysis. The average (mean) effect of tree canopy across all six communities was an increase of approximately USD $780 per one percent increase in tree cover. The mean sale price across the 600 sites was $188,730; the mean canopy cover was 25.8%. This indicates the average value of tree canopy is $20,226 or 10.7% of the sale price of the home. Key Words. Cincinnati; Environmental Benefits; Hedonics; Ohio; Property Value; Urban Forestry. ® Nicholas A. Martin, Arthur H. Chappelka, Greg Somers, Edward F. Loewenstein, and Gary J. Keever Evaluation of Sampling Protocol for i-Tree Eco: A Case Study in Predicting Ecosystem Services at Auburn University ...................................................................................................................56 Abstract. Auburn University (Auburn, Alabama, U.S.) was used as a site for a case study evaluating the standard plot sampling protocol for i-Tree Eco. A 100% tree inventory of the managed areas of campus was conducted in 2009–2010 and provided a complete data set for the evalu- ation. Air pollution removal, carbon storage, and carbon sequestration were the ecosystem services examined. Total tree population was also utilized for this assessment to provide a comparison to i-Tree Eco protocol. To achieve an estimate with a ±10% allowable error of the total campus value, 622 plots (0.04 ha each) with at least one tree present would need to be inventoried for air pollution removal, 870 plots for car- bon storage, 483 plots for carbon sequestration, and 258 plots for number of trees, as opposed to the standard i-Tree Eco protocol of 200 plots. This study provides a first step in evaluating i-Tree Eco sampling protocol; however, efforts testing these results at sites throughout the southern United States are needed to provide the most accurate estimate of plot numbers necessary for predicting ecosystem services of urban forests. Key Words. Alabama, i-Tree Eco; Plot Sampling; UFORE Model; Urban Tree Inventory. Kristen L. King and Dexter H. Locke A Comparison of Three Methods for Measuring Local Urban Tree Canopy Cover ..........................62 Abstract. Measurements of urban tree canopy cover are crucial for managing urban forests and required for the quantifica- tion of the benefits provided by trees. These types of data are increasingly used to secure funding and justify large-scale planting pro- grams in urban areas. Comparisons of tree canopy measurement methods have been conducted before, but a rapidly evolving set of new technologies and applications may leave urban foresters wondering, “Which method is most appropriate for my circumstances?” This analysis compares two well-established measures of local tree canopy and building cover with a third, relatively untested technique. Field-based visual estimations (using the USDA Forest Service’s i-Tree protocols), summaries of high- resolution land cover data using geographic information systems (GIS), and an analysis of skyward-oriented hemispherical pho- tographs at 215 roadside sites across the five diverse counties of New York City, New York, U.S., are the methods evaluated herein. The study authors found no statistically significant differences between the methods when compar- ing tree canopy; however, the hemispherical camera had a tendency to overestimate building coverage. It is concluded that hemispheric photo techniques are understudied in urban areas, and that the i-Tree and GIS-based approaches are complementary and reinforcing tools indispensable for both the urban forest management and research communities. Key Words. Forest Measurement; Gap Light Analyzer; GIS; Hemispheric Photos; i-Tree; Urban Land Cover; Urban Tree Canopy. ©2013 | International Society of Arboriculture | ISSN:1935-5297
March 2013
| Title Name |
Pages |
Delete |
Url |
| Empty |
Search Text Block
Page #page_num
#doc_title
Hi $receivername|$receiveremail,
$sendername|$senderemail wrote these comments for you:
$message
$sendername|$senderemail would like for you to view the following digital edition.
Please click on the page below to be directed to the digital edition:
$thumbnail$pagenum
$link$pagenum
Your form submission was a success. You will be contacted by Washington Gas with follow-up information regarding your request.
This process might take longer please wait
