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Pacific Southwest Research Station |
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Pacific Southwest
Research Station 800 Buchanan Street Albany, CA 94710-0011 (510) 883-8830 ![]() |
Publications and Products![]() General Technical ReportTitle: Urban Tree Database and Allometric Equations Authors: E. Gregory McPherson, Natalie S. van Doorn, and Paula J. Peper Date: 2016 Source: Gen. Tech. Rep. PSW-GTR-253. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station Station ID: GTR-PSW-253 Description: Information on urban tree growth underpins models used to calculate the effects
of trees on the environment and human well-being. Maximum tree size and other
growth data are used by urban forest managers, landscape architects, and planners
to select trees most suitable to the amount of growing space, thereby reducing costly
future conflicts between trees and infrastructure. Growth data are used to examine
relationships between growth and influencing factors such as site conditions and
stewardship practices. Despite the importance of tree growth data to the science
and practice of urban forestry, our knowledge in this area is scant. Over a period of
14 years, scientists with the U.S. Forest Service Pacific Southwest Research Station
recorded data from a consistent set of measurements on over 14,000 trees in 17 U.S.
cities. Key information collected for each tree species includes bole and crown size,
location, and age. From this Urban Tree Database, 365 sets of tree growth equations
were developed for the 171 distinct species. Appendices contain field data collection
protocols, foliar biomass data that are fundamental to calculating leaf area, tree
biomass equations for carbon storage estimates, and a user guide that illustrates
application of the equations to calculate carbon stored over many years for tree
species that were measured in multiple cities. An online database at http://dx.doi.org/10.2737/RDS-2016-0005 includes the raw data, growth equations, coefficients,
and application information for each species' volume and dry-weight-biomass
equations for urban and rural forest trees; and an expanded list of biomass density
factors for common urban tree species. View and print the publication (10.0 MB) Citation
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