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Evapotranspiration Partitioning of Eucalyptus benthamii and Pinus taeda During Early Stand Development

Journal Article · · BioEnergy Research
 [1];  [2];  [3];  [4];  [3]
  1. University of Georgia, Athens, GA (United States); Savannah River Ecology Laboratory, Aiken, SC (United States); The Jones Center at Ichauway, Newton, GA (United States); University of Georgia Savannah River Ecology Laboratory
  2. University of Georgia, Athens, GA (United States)
  3. University of Georgia, Athens, GA (United States); Savannah River Ecology Laboratory, Aiken, SC (United States)
  4. USDA Forest Service, Otto, NC (United States)
Increasing demand for bioenergy from intensively managed woody crops raises concerns of increased evapotranspiration and potential decreases in water yield. Pinus taeda (loblolly pine) is currently the most cultivated species in the southeastern USA, the country’s wood basket. However, Eucalyptus species could achieve greater productivity but with unknown ramifications for water budgets. To address the knowledge gap, we determined annual water budgets of loblolly pine and Eucalyptus benthamii (eucalypt) from growing years 3 through 5 in a replicated (n = 3) two-factor design comparing species and groundwater depth. Paired plots were established across a depth-to-groundwater gradient from shallow (~ 2 m) to deep (~ 8 m). Hydrologic budgets were constructed by measuring precipitation, interception, soil evaporation, and transpiration. Eucalypt evapotranspiration and above-ground biomass production for growing years 3 through 5 were on average 25 and 14% greater than pine, respectively; however, evapotranspiration did not differ across groundwater depths. At the end of growing year 5, eucalypt had higher transpiration and evapotranspiration per unit area than pine. Soil evaporation was substantial in young plantations (nearly 500 mm) in growing year 3 but declined as the canopy closed. Partitioning of evapotranspiration components in developing bioenergy plantations was dynamic due to canopy development driven decreases in soil evaporation and increases in transpiration and interception; total evapotranspiration was less variable from year to year. Water use efficiency (WUE, kg biomass/m3 H2O) per unit evapotranspiration was similar between species, but WUE per unit transpiration was higher in pine. As a result, considering total evapotranspiration in young plantations can affect WUE interpretations.
Research Organization:
Savannah River Ecology Laboratory, Aiken, SC (United States)
Sponsoring Organization:
USDA National Institute of Food and Agriculture, Agriculture and Food Research Initiative; USDOE
Grant/Contract Number:
EM0003622; EM0004391; EM0005228
OSTI ID:
2228450
Journal Information:
BioEnergy Research, Journal Name: BioEnergy Research Vol. 16; ISSN 1939-1234
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (59)

Interactions among hydraulic conductivity distributions, subsurface topography, and transport thresholds revealed by a multitracer hillslope irrigation experiment: MULTITRACER HILLSLOPE IRRIGATION EXPERIMENT journal August 2016
Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray–Darling Basin, Australia – implications for the management of environmental flows journal January 2015
Water use in a young Pinus taeda bioenergy plantation: Effect of intensive management on stand evapotranspiration journal June 2022
When interflow also percolates: downslope travel distances and hillslope process zones: INVITED COMMENTARY journal February 2014
Comparison of interception, forest floor evaporation and transpiration in Pinus radiata and Eucalyptus globulus plantations journal June 2014
Modelling effects of forest canopies on slope stability journal January 2003
Maximum rooting depth of vegetation types at the global scale journal December 1996
Bioenergy Development Policy and Practice Must Recognize Potential Hydrologic Impacts: Lessons from the Americas journal March 2015
A simple calibration improved the accuracy of the thermal dissipation technique for sap flow measurements in juvenile trees of six species journal October 2011
Wood production per evapotranspiration was increased by irrigation in plantations of Eucalyptus globulus and E. nitens journal October 2015
Short-rotation woody crops for bioenergy and biofuels applications journal August 2009
Recalibrating Best Practices, Challenges, and Limitations of Estimating Tree Transpiration Via Sap Flow journal February 2021
Water use and salt accumulation by Eucalyptus camaldulensis and Casuarina cunninghamiana on a site with shallow saline groundwater journal February 1999
Gas exchange and stand-level estimates of water use and gross primary productivity in an experimental pine and switchgrass intercrop forestry system on the Lower Coastal Plain of North Carolina, U.S.A journal July 2014
Calibration approach and range of observed sap flow influences transpiration estimates from thermal dissipation sensors journal September 2021
Woody energy crops in the southeastern United States: Two centuries of practitioner experience☆ journal December 2010
Woody bioenergy crop selection can have large effects on water yield: A southeastern United States case study journal October 2018
Eucalyptus production and the supply, use and efficiency of use of water, light and nitrogen across a geographic gradient in Brazil journal May 2004
Milestones and millstones: A retrospective on 50 years of research to improve productivity in loblolly pine plantations journal May 2006
Transpiration along an age series of Eucalyptus globulus plantations in southeastern Australia journal April 2010
Effects of irrigation on water use and water use efficiency in two fast growing Eucalyptus plantations journal April 2010
Corrigendum: “Energy and water balance of two contrasting loblolly pine plantations on the lower coastal plain of North Carolina, USA” [Foreco 259: 1299–1310] journal June 2010
Dominant clonal Eucalyptus grandis × urophylla trees use water more efficiently journal September 2014
Growth responses of narrow or broad site adapted tree species to a range of resource availability treatments after a full harvest rotation journal February 2016
Comparative water use in short-rotation Eucalyptus benthamii and Pinus taeda trees in the Southern United States journal August 2017
Water quality effects of short-rotation pine management for bioenergy feedstocks in the southeastern United States journal September 2017
Herbicide, fertilization, and planting density effects on intensively managed loblolly pine early stand development journal September 2020
Rainfall partitioning in young clonal plantations Eucalyptus species in a subtropical environment, and implications for water and forest management journal September 2021
Interflow dynamics on a low relief forested hillslope: Lots of fill, little spill journal March 2016
Relationships among forest type, watershed characteristics, and watershed ET in rural basins of the Southeastern US journal December 2020
Response of mean annual evapotranspiration to vegetation changes at catchment scale journal March 2001
Interflow Is Not Binary: A Continuous Shallow Perched Layer Does Not Imply Continuous Connectivity journal September 2018
Hydrological components of a young loblolly pine plantation on a sandy soil with estimates of water use and loss journal December 1998
Natural gold particles in Eucalyptus leaves and their relevance to exploration for buried gold deposits journal October 2013
Une nouvelle méthode pour la mesure du flux de sève brute dans le tronc des arbres journal January 1985
Impacts of tree plantations on groundwater in south-eastern Australia journal January 2006
The influence of depth-to-groundwater on structure and productivity of Eucalyptus woodlands journal January 2014
Growth, Photosynthesis, and Cold Tolerance ofEucalyptus benthamiiPlanted in the Piedmont of North Carolina journal August 2018
A Growth and Yield Model for Eucalyptus benthamii in the Southeastern United States journal November 2019
Water availability and genetic effects on water relations of loblolly pine (Pinus taeda) stands journal January 2010
Calibration of thermal dissipation sap flow probes for ring- and diffuse-porous trees journal November 2010
Transpiration of Eucalyptus woodlands across a natural gradient of depth-to-groundwater journal March 2017
Environmental effects of short-rotation woody crops for bioenergy: What is and isn't known journal August 2018
Trading Water for Carbon with Biological Carbon Sequestration journal December 2005
Introduction ofEucalyptusspp. into the United States with Special Emphasis on the Southern United States journal January 2013
NOAA's 1981–2010 U.S. Climate Normals: An Overview journal November 2012
Hydrologic and Water Quality Effects of Thinning Loblolly pine journal January 2006
The Challenge of Lignocellulosic Bioenergy in a Water-Limited World journal February 2013
A Mariotte-Based Verification System for Heat-Based sap flow Sensors journal June 2012
The Effect of Landscape Position on Biomass Crop Yield journal January 2010
2016 Billion-Ton Report: Advancing Domestic Resources for a Thriving Bioeconomy report July 2016
The Southern Forest Futures Project: technical report report January 2013
Status update on development of a eucalyptus plantation program in the southeastern United States and higher elevations of southern Brazil journal April 2016
Water-Use Efficiency: Advances and Challenges in a Changing Climate journal February 2019
Scientific Basis for Sustainable Management of Eucalyptus and Populus as Short-Rotation Woody Crops in the U.S. journal May 2014
Herbicide, fertilization, and planting density effects on intensively managed loblolly pine early stand development dataset January 2020
Where does streamwater come from in low-relief forested watersheds? A dual-isotope approach journal January 2015
Is the reputation of Eucalyptus plantations for using more water than Pinus plantations justified? journal October 2022
Potential Implications for Expansion of Freeze-Tolerant Eucalyptus Plantations on Water Resources in the Southern United States journal June 2015

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