Water use of a multigenotype poplar short-rotation coppice from tree to stand scale

Autor: M.S. Verlinden, Régis Fichot, Joanna A. Horemans, Reinhart Ceulemans, Terenzio Zenone, Jasper Bloemen, L.S. Broeckx
Přispěvatelé: Department of Biology, Research Centre of Excellence on Plant and Vegetation Ecology, University of Antwerp (UA), Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), Institut National de la Recherche Agronomique (INRA)-Université d'Orléans (UO)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
0106 biological sciences
Canopy
Biodiversité et Ecologie
évapotranspiration
short‐rotation coppice
02 engineering and technology
bioenergy
evapotranspiration
poplar
sap flow
short-rotation coppice
stand water balance
01 natural sciences
Water balance
water balance
Original Research Articles
Evapotranspiration
0202 electrical engineering
electronic engineering
information engineering
Water cycle
bilan hydrique
Waste Management and Disposal
belgique
Original Research
Transpiration
2. Zero hunger
Physics
Forestry
taillis à courte rotation
génotype
Engineering sciences. Technology
utilisation de l'eau
peuplement
020209 energy
Eddy covariance
populus
Biodiversity and Ecology
settlement
Biology
bioénergie
Renewable Energy
Sustainability and the Environment
15. Life on land
Agronomy
flandres
flux de sève
Environmental science
équilibre hydrique
Short rotation coppice
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Agronomy and Crop Science
Water use
010606 plant biology & botany
Zdroj: Global Change Biology-Bioenergy
Global Change Biology-Bioenergy, 2017, 9 (2), pp.370-384. ⟨10.1111/gcbb.12345⟩
Global Change Biology-Bioenergy 2 (9), 370-384. (2017)
Global Change Biology. Bioenergy
GCB bioenergy
ISSN: 1757-1693
DOI: 10.1111/gcbb.12345⟩
Popis: Short‐rotation coppice (SRC) has great potential for supplying biomass‐based heat and energy, but little is known about SRC's ecological footprint, particularly its impact on the water cycle. To this end, we quantified the water use of a commercial scale poplar (Populus) SRC plantation in East Flanders (Belgium) at tree and stand level, focusing primarily on the transpiration component. First, we used the AquaCrop model and eddy covariance flux data to analyse the different components of the stand‐level water balance for one entire growing season. Transpiration represented 59% of evapotranspiration (ET) at stand scale over the whole year. Measured ET and modelled ET were lower as compared to the ET of reference grassland, suggesting that the SRC only used a limited amount of water. Secondly, we compared leaf area scaled and sapwood area scaled sap flow (F s) measurements on individual plants vs. stand scale eddy covariance flux data during a 39‐day intensive field campaign in late summer 2011. Daily stem diameter variation (∆D) was monitored simultaneously with F s to understand water use strategies for three poplar genotypes. Canopy transpiration based on sapwood area or leaf area scaling was 43.5 and 50.3 mm, respectively, and accounted for 74%, respectively, 86%, of total ecosystem ET measured during the intensive field campaign. Besides differences in growth, the significant intergenotypic differences in daily ∆D (due to stem shrinkage and swelling) suggested different water use strategies among the three genotypes which were confirmed by the sap flow measurements. Future studies on the prediction of SRC water use, or efforts to enhance the biomass yield of SRC genotypes, should consider intergenotypic differences in transpiration water losses at tree level as well as the SRC water balance at stand level.
Databáze: OpenAIRE
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