Surface Water Storage Capacity of Twenty Tree Species in Davis, California

Journal of Environmental Quality
Qingfu Xiao, E Gregory McPherson

Abstract

Urban forestry is an important green infrastructure strategy because healthy trees can intercept rainfall, reducing stormwater runoff and pollutant loading. Surface saturation storage capacity, defined as the thin film of water that must wet tree surfaces before flow begins, is the most important variable influencing rainfall interception processes. Surface storage capacity is known to vary widely among tree species, but it is little studied. This research measured surface storage capacities of 20 urban tree species in a rainfall simulator. The measurement system included a rainfall simulator, digital balance, digital camera, and computer. Eight samples were randomly collected from each tree species. Twelve rainfall intensities (3.5-139.5 mm h) were simulated. Leaf-on and leaf-off simulations were conducted for deciduous species. Stem and foliar surface areas were estimated using an image analysis method. Results indicated that surface storage capacities varied threefold among tree species, 0.59 mm for crape myrtle ( L.) and 1.81 mm for blue spruce ( Engelm.). The mean value across all species was 0.86 mm (0.11 mm SD). To illustrate application of the storage values, interception was simulated and compared across species for a ...Continue Reading

References

Sep 2, 2003·American Journal of Public Health·Stephen J GaffieldRichard J Jackson

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Citations

Nov 2, 2017·The Cochrane Database of Systematic Reviews·Thomas RadtkeSusi Kriemler
Jun 1, 2017·Landscape and Urban Planning·Adam BerlandMatthew E Hopton
Apr 18, 2021·Environmental Science and Pollution Research International·Xueyan WangXiuying Yang
Apr 18, 2021·Global Change Biology·Kai YueJosep Peñuelas

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