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Measuring Transpiration of Irrigated Landscape Trees in a Semi-arid Urban Environment

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Created: Aug 05, 2016 at 5:06 p.m.
Last updated: Jan 14, 2017 at 3:40 a.m.
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The Heber Valley (Wasatch County, Utah) is a developing landscape where populations are projected to grow 90% by 2030 (Utah, 2014). I expect that afforestation will accompany population growth and urban expansion in this region, placing greater demand on the valley’s water resources. My study is aimed at understanding the influence of afforestation on water use in a built environment where water resources are limiting. I am currently collecting sap flux measurements on mature trees within this system with the following questions in mind: (1) Are there quantifiable species-specific differences in transpiration based on evolutionary lineage, where angiosperm and gymnosperm species have functionally distinct wood anatomy? Additionally, are there differences between native and introduced species as a function of local adaptation? (2) What impact does the transition from a rural to urban landscape, and the accompanying planting choices, have on water resource use? These questions have practical management applications in terms of tree selection and determining how much water should be allocated to irrigating urban landscapes.

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Provo River Watershed
North Latitude
East Longitude
South Latitude
West Longitude


Start Date:
End Date:


Additional Metadata

Name Value
Observed Variables Relative Humidity, Air Temperature, Dew Point Temp, Vapor Pressure, Global Radiation, Wind Direction, Wind Speed, Volumetric Water, Raw Sap Flow, Processed Sap Flow
Variable Description Atmospheric and soil moisture variables


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation iUTAH-innovative Urban Transitions and Aridregion Hydro-sustainability 1208732

How to Cite

Bunnell, M. (2017). Measuring Transpiration of Irrigated Landscape Trees in a Semi-arid Urban Environment, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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