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

Authors: Michael Bunnell
Owners: iUTAH Data Manager
Resource type:Generic
Created:Aug 05, 2016 at 5:06 p.m.
Last updated: Jan 14, 2017 at 3:40 a.m. by iUTAH Data Manager


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

Heber Valley,sapflux,urban forest,private,Provo River,Relative Humidity,Air Temperature,Dew Point Temp,Vapor Pressure,Global Radiation,Wind Direction,Wind Speed,Volumetric Water,iUTAH

How to cite

Bunnell, M. (2017). Measuring Transpiration of Irrigated Landscape Trees in a Semi-arid Urban Environment, HydroShare, http://www.hydroshare.org/resource/9f189e2ae33d4994be0008e1a6688af8

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


Sharing status:

  • Public Resource  Public
  • Sharable Resource  Shareable



 Coordinate System/Geographic Projection:  WGS 84 EPSG:4326
 Coordinate Units:  Decimal degrees
Place/Area Name: Provo River Watershed

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The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
Michael Bunnell BYU
Extended 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


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


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