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作者

Deborah R. Hilbert;Eric A. North;Richard J. Hauer;Andrew K. Koeser;Drew C. McLean;Robert J. Northrop;Michael Andreu;Stephani Parbs

来源

URBAN FORESTRY & URBAN GREENING,Vol.49,Issue1,Article 126645

语言

英文

关键字

Allometry;Curb damage;Root system;Sidewalk damage;Street tree;Urban tree

作者单位

Department of Environmental Horticulture, CLCE, IFAS, University of Florida – Gulf Coast Research and Education Center, 14625 Co. Rd. 672, Wimauma, FL, 33598, USA;School of Natural Resources, University of Nebraska – Lincoln, 407 S. Hardin Hall. 3310 Holdrege St., Lincoln, NE, 68583, USA;College of Natural Resources, University of Wisconsin – Stevens Point, 800 Reserve St., Stevens Point, WI, 54481, USA;UF/IFAS Extension Hillsborough County, 5339 Co. Rd 579, Seffner, FL, 33584, USA;School of Forest Resources & Conservation, University of Florida – Gainesville, 136 Newins-Ziegler Hall, PO Box 110410, Gainesville, FL, 32611, USA;Department of Environmental Horticulture, CLCE, IFAS, University of Florida – Gulf Coast Research and Education Center, 14625 Co. Rd. 672, Wimauma, FL, 33598, USA;School of Natural Resources, University of Nebraska – Lincoln, 407 S. Hardin Hall. 3310 Holdrege St., Lincoln, NE, 68583, USA;College of Natural Resources, University of Wisconsin – Stevens Point, 800 Reserve St., Stevens Point, WI, 54481, USA;UF/IFAS Extension Hillsborough County, 5339 Co. Rd 579, Seffner, FL, 33584, USA;School of Forest Resources & Conservation, University of Florida – Gainesville, 136 Newins-Ziegler Hall, PO Box 110410, Gainesville, FL, 32611, USA

摘要

Tree roots often come in conflict with elements of the built environment, particularly when planted in limited soil locations. For street trees located between roadways and sidewalks, minimum planting width requirements can be calculated to prevent large supporting roots from lifting or growing over paved surfaces. In this study, we used diameter at breast height (DBH) to predict trunk flare diameter for common shade tree species from four different communities in the United States (Milwaukee, Minneapolis, Saint Paul, and Tampa). These predictive models were then used to calculate minimum width requirements to reduce infrastructure damage given the maximum expected DBH measurements for each species based on existing urban forest inventory data in the communities studied. For all ten taxa tested, DBH was a significant predictor of trunk flare diameter (minimum R2 = 0.81), indicating that this commonly used urban forestry measurement can be used to design minimum growing space based on selected species to potentially prevent root and infrastructure conflicts. The methods employed in this paper can be easily replicated by other researchers in order to create guidelines for species and environments not captured in our data set. Alternatively, broader functions for estimating trunk flare based on DBH are provided for species based on natural habitat type (i.e., upland, wetland, variable).