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    Author(s): E. Gregory McPherson; Q. Xiao; Natalie van Doorn; P. Peper; E. Teach
    Date: 2017
    Source: Arborist News. June: 30-33
    Publication Series: Magazines or Trade Publications
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (463.0 KB)

    Description

    Urban forests can be an effective strategy for managing stormwater. The soil that supports tree growth acts like a reservoir that reduces runoff. The tree crown intercepts rainfall on leaves and stems and its evaporation reduces water reaching the ground below. Until now surface storage capacities have been studied only for forest trees. Based on forest research, green infrastructure accounting tools have assumed a storage depth of one millimeter, regardless of species. We used a rainfall simulator and branch cuttings of 20 tree species in Davis, CA to measure the depth of surface storage under a variety of rainfall conditions. Potential storage capacity is modeled for 40 years using tree growth equations and storage depth values.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    McPherson, E.G.; Xiao, Q.; van Doorn, N.S.; Peper, P.; Teach, E. 2017. Surface storage of rainfall in tree crowns: not all trees are equal. Arborist News. June: 30-33.

    Keywords

    ecosystem services, interception, leaf area, tree growth, urban forestry

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https://www.fs.usda.gov/treesearch/pubs/54890