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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F13%3A00427772%21RIV15-AV0-67179843
rdf:type
n5:Vysledek skos:Concept
dcterms:description
Comparative measurements of canopy transpiration (T) and evapotranspiration (ET) of a high density poplar stand were conducted in a typical rain-fed area of the Czech Moravian Highlands, Czech Republic, during 2012. Higher mean annual temperature, lower precipitation and period with drought occurred in this year. Sap flow measured on four sample trees was scaled to T and successfully validated by ET measured by Bowen ratio energy balance method. Since the sap flow measurements were available from June to September, a stomatal conductance model and leaf area measurements were used to predict annual T. It was found that when stomatal conductance is scaled to the canopy, a non-linear relationship between LAI and canopy conductance has to be taken into account. An increase of LAI from 0 to 3 had the most important impact on canopy transpiration. Apart from T and ET, interception was assessed by measuring rainfall at open area, canopy throughfall and stemflow. The ET of the understory and soil evaporation was finally estimated as the residual of ET. Maximum daily T and ET was 4.5 and 5.7 mm day-1, respectively, whereas maximum reference evapotranspiration (ETo) was 6.6 mm day-1. Over the entire annual cycle cumulative ET totalled 572 mm, T was 347 mm, soil and understory ET was 176 mm, and interception was 49 mm. Rainfall totalled 568 mm while ETo was 681 mm. The results of this study provide promising material for further up-scaling of poplar short rotation coppice water use in other climatic regions or in future climate conditions Comparative measurements of canopy transpiration (T) and evapotranspiration (ET) of a high density poplar stand were conducted in a typical rain-fed area of the Czech Moravian Highlands, Czech Republic, during 2012. Higher mean annual temperature, lower precipitation and period with drought occurred in this year. Sap flow measured on four sample trees was scaled to T and successfully validated by ET measured by Bowen ratio energy balance method. Since the sap flow measurements were available from June to September, a stomatal conductance model and leaf area measurements were used to predict annual T. It was found that when stomatal conductance is scaled to the canopy, a non-linear relationship between LAI and canopy conductance has to be taken into account. An increase of LAI from 0 to 3 had the most important impact on canopy transpiration. Apart from T and ET, interception was assessed by measuring rainfall at open area, canopy throughfall and stemflow. The ET of the understory and soil evaporation was finally estimated as the residual of ET. Maximum daily T and ET was 4.5 and 5.7 mm day-1, respectively, whereas maximum reference evapotranspiration (ETo) was 6.6 mm day-1. Over the entire annual cycle cumulative ET totalled 572 mm, T was 347 mm, soil and understory ET was 176 mm, and interception was 49 mm. Rainfall totalled 568 mm while ETo was 681 mm. The results of this study provide promising material for further up-scaling of poplar short rotation coppice water use in other climatic regions or in future climate conditions
dcterms:title
Annual and Intra-Annual Water Balance Components of a Short Rotation Poplar Coppice Based on Sap Flow and Micrometeorological and Hydrological Approaches Annual and Intra-Annual Water Balance Components of a Short Rotation Poplar Coppice Based on Sap Flow and Micrometeorological and Hydrological Approaches
skos:prefLabel
Annual and Intra-Annual Water Balance Components of a Short Rotation Poplar Coppice Based on Sap Flow and Micrometeorological and Hydrological Approaches Annual and Intra-Annual Water Balance Components of a Short Rotation Poplar Coppice Based on Sap Flow and Micrometeorological and Hydrological Approaches
skos:notation
RIV/67179843:_____/13:00427772!RIV15-AV0-67179843
n4:aktivita
n12:P n12:I
n4:aktivity
I, P(EE2.3.20.0248), P(EE2.4.31.0056)
n4:cisloPeriodika
JUN 04-07
n4:dodaniDat
n16:2015
n4:domaciTvurceVysledku
n13:4394372 n13:9619674 n13:5539498 n13:8805504 Tripathi, Abishek n13:4967682 n13:8957924
n4:druhVysledku
n9:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n7:predkladatel
n4:idSjednocenehoVysledku
61302
n4:idVysledku
RIV/67179843:_____/13:00427772
n4:jazykVysledku
n17:eng
n4:klicovaSlova
short rotation poplar coppice; water balance; sap flow; Bowen ratio and energy balance method; modeling
n4:klicoveSlovo
n11:water%20balance n11:sap%20flow n11:short%20rotation%20poplar%20coppice n11:Bowen%20ratio%20and%20energy%20balance%20method n11:modeling
n4:kodStatuVydavatele
BE - Belgické království
n4:kontrolniKodProRIV
[CEAB454E9FF8]
n4:nazevZdroje
Acta Horticulturae
n4:obor
n15:EH
n4:pocetDomacichTvurcuVysledku
7
n4:pocetTvurcuVysledku
7
n4:projekt
n10:EE2.3.20.0248 n10:EE2.4.31.0056
n4:rokUplatneniVysledku
n16:2013
n4:svazekPeriodika
991
n4:tvurceVysledku
Fischer, Milan Žalud, Zdeněk Tripathi, Abishek Pohanková, Eva Hlavinka, Petr Orság, Matěj Trnka, Miroslav
n4:wos
000332514600049
s:issn
0567-7572
s:numberOfPages
8