Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6549290 | Urban Forestry & Urban Greening | 2018 | 8 Pages |
Abstract
We found that shade factors increased with age until trees reached about 20 years or 30â¯cm DBH. Using a single shade factor from a mature tree for a young tree can overestimate actual crown density. Also, in many cases, shade factors were found to vary considerably for the same species growing in different climate zones. We provide a set of tables that contain the necessary values to compute shade factors from DBH or age with species and climate effects accounted for. This new information expands the scope of urban species with measured shade factors and allows researchers and urban foresters to more accurately predict their values across time and space.
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Authors
E. Gregory McPherson, Qingfu Xiao, Natalie S. van Doorn, Nels Johnson, Shannon Albers, Paula J. Peper,