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Statements

Subject Item
n2:RIV%2F68378289%3A_____%2F13%3A00425901%21RIV14-AV0-68378289
rdf:type
skos:Concept n15:Vysledek
dcterms:description
This study reports on 3.5 years (2008–2011) of actual evapotranspiration (ET) measurements of two short-rotation poplar coppice (SRC) plantations in comparison with two reference grass covers (clipped turf grass and permanent grassland) in a rain-fed area of the Czech–Moravian Highlands in the Czech Republic. The Bowen ratio/energy balance method (BREB) was used to measure the ET of all the four investigated covers. Although the ET of the SRCs sometimes exceeded that of grass vegetation or the reference evapotranspiration (ET0) on an hourly, daily or monthly time scale, it was always lower over an entire annual cycle. The wide range of the annual ET totals for the SRCs was determined mainly by the different rotation periods and ages of the stands, along with the leaf area index (LAI), the state of the canopy closure, and tree heights. The lowest annual ET (344 mm) was observed during the 1st year of the 2nd rotation (following the winter harvest) in 2010. During that year, the SRC regrowth started only after mid-June, and the maximum LAI of the canopy, which was approximately 2 m in height and was not completely closed, reached 3.7. In contrast, in the case of a mature stand approximately 12 m in height in 2009, i.e., the 8th year of the 1st rotation, the maximum canopy LAI reached 7.5, and the annual ET reached its highest observed value (549 mm). The leaf area duration of the SRCs was always lower than that of the grass covers, and this seemed to be the main reason for the significantly lower annual ET totals of the SRCs. These results are in the middle range of ET values from 21 recent studies on poplar and willow cultures. The results of this study indicate that conversion of arable land into poplar SRCs instead of grasslands does not result in significant differences in ET of the agricultural landscape. This study reports on 3.5 years (2008–2011) of actual evapotranspiration (ET) measurements of two short-rotation poplar coppice (SRC) plantations in comparison with two reference grass covers (clipped turf grass and permanent grassland) in a rain-fed area of the Czech–Moravian Highlands in the Czech Republic. The Bowen ratio/energy balance method (BREB) was used to measure the ET of all the four investigated covers. Although the ET of the SRCs sometimes exceeded that of grass vegetation or the reference evapotranspiration (ET0) on an hourly, daily or monthly time scale, it was always lower over an entire annual cycle. The wide range of the annual ET totals for the SRCs was determined mainly by the different rotation periods and ages of the stands, along with the leaf area index (LAI), the state of the canopy closure, and tree heights. The lowest annual ET (344 mm) was observed during the 1st year of the 2nd rotation (following the winter harvest) in 2010. During that year, the SRC regrowth started only after mid-June, and the maximum LAI of the canopy, which was approximately 2 m in height and was not completely closed, reached 3.7. In contrast, in the case of a mature stand approximately 12 m in height in 2009, i.e., the 8th year of the 1st rotation, the maximum canopy LAI reached 7.5, and the annual ET reached its highest observed value (549 mm). The leaf area duration of the SRCs was always lower than that of the grass covers, and this seemed to be the main reason for the significantly lower annual ET totals of the SRCs. These results are in the middle range of ET values from 21 recent studies on poplar and willow cultures. The results of this study indicate that conversion of arable land into poplar SRCs instead of grasslands does not result in significant differences in ET of the agricultural landscape.
dcterms:title
Evapotranspiration of a high-density poplar stand in comparison with a reference grass cover in the Czech–Moravian Highlands Evapotranspiration of a high-density poplar stand in comparison with a reference grass cover in the Czech–Moravian Highlands
skos:prefLabel
Evapotranspiration of a high-density poplar stand in comparison with a reference grass cover in the Czech–Moravian Highlands Evapotranspiration of a high-density poplar stand in comparison with a reference grass cover in the Czech–Moravian Highlands
skos:notation
RIV/68378289:_____/13:00425901!RIV14-AV0-68378289
n15:predkladatel
n16:ico%3A68378289
n3:aktivita
n7:P n7:I
n3:aktivity
I, P(ED1.1.00/02.0073), P(EE2.3.20.0248), P(EE2.3.30.0056), P(EE2.4.31.0056)
n3:cisloPeriodika
NOV 2013
n3:dodaniDat
n17:2014
n3:domaciTvurceVysledku
n12:1290320
n3:druhVysledku
n5:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
73737
n3:idVysledku
RIV/68378289:_____/13:00425901
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Evapotranspiration; Short-rotation poplar coppice; Grassland; Bowen ratio/energy balance method
n3:klicoveSlovo
n9:Bowen%20ratio%2Fenergy%20balance%20method n9:Evapotranspiration n9:Short-rotation%20poplar%20coppice n9:Grassland
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[5CCE4D041080]
n3:nazevZdroje
Agricultural and Forest Meteorology
n3:obor
n10:DG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
8
n3:projekt
n4:ED1.1.00%2F02.0073 n4:EE2.4.31.0056 n4:EE2.3.30.0056 n4:EE2.3.20.0248
n3:rokUplatneniVysledku
n17:2013
n3:svazekPeriodika
181
n3:tvurceVysledku
Trnka, M. Fischer, M. Žalud, Z. Ceulemans, R. Kučera, J. Deckmyn, G. Orság, M. Sedlák, Pavel
n3:wos
000325242500004
s:issn
0168-1923
s:numberOfPages
18
n6:doi
10.1016/j.agrformet.2013.07.004