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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F12%3A00382198%21RIV13-AV0-67179843
rdf:type
n11:Vysledek skos:Concept
dcterms:description
Long-term water use efficiency (WUE) describes water utilization by plants on different levels of biosphere organization. We have performed a WUE evaluation in two young spruce forests of different stand densities, sparse (FS) and dense (FD) from 1998 to 2003. WUE in this study was calculated as a ratio of total aboveground biomass increment (TB) and transpiration (T) on annual time scale. Two approaches were used for total biomass evaluation: i) TBI - from stem diameter at the breast height (DBH) increment dynamic and its allometry with TB, and ii) TBII - as a sum of leaf, branch and stem biomass. Growth dynamic of branch biomass was related to tree height increment and leaf biomass to the leaf area index. TBI was found significantly higher than TBII in FD. However, WUE was not significantly different among the stands and approaches. WUE with TBI (WUEI) used were 4.30 g/L and 4.68 g/L in FS and FD, WUE with use TBII (WUEII) 4.17 g/L and 4.14 g/L in FS and FD, respectively. WUE of FS and FS was similar due to the identical climate conditions, stand age and genetic origin of the trees. We can recommend TBI approach due to lower instrumentation demands and accurate results in the same time. Long-term water use efficiency (WUE) describes water utilization by plants on different levels of biosphere organization. We have performed a WUE evaluation in two young spruce forests of different stand densities, sparse (FS) and dense (FD) from 1998 to 2003. WUE in this study was calculated as a ratio of total aboveground biomass increment (TB) and transpiration (T) on annual time scale. Two approaches were used for total biomass evaluation: i) TBI - from stem diameter at the breast height (DBH) increment dynamic and its allometry with TB, and ii) TBII - as a sum of leaf, branch and stem biomass. Growth dynamic of branch biomass was related to tree height increment and leaf biomass to the leaf area index. TBI was found significantly higher than TBII in FD. However, WUE was not significantly different among the stands and approaches. WUE with TBI (WUEI) used were 4.30 g/L and 4.68 g/L in FS and FD, WUE with use TBII (WUEII) 4.17 g/L and 4.14 g/L in FS and FD, respectively. WUE of FS and FS was similar due to the identical climate conditions, stand age and genetic origin of the trees. We can recommend TBI approach due to lower instrumentation demands and accurate results in the same time.
dcterms:title
Long-term Water Use Efficiency of Young Spruce Forest Long-term Water Use Efficiency of Young Spruce Forest
skos:prefLabel
Long-term Water Use Efficiency of Young Spruce Forest Long-term Water Use Efficiency of Young Spruce Forest
skos:notation
RIV/67179843:_____/12:00382198!RIV13-AV0-67179843
n11:predkladatel
n12:ico%3A67179843
n3:aktivita
n4:Z n4:P
n3:aktivity
P(ED1.1.00/02.0073), P(SP/2D1/70/08), P(SP/2D1/93/07), Z(AV0Z60870520)
n3:cisloPeriodika
1
n3:dodaniDat
n18:2013
n3:domaciTvurceVysledku
n14:9285350 n14:8834822
n3:druhVysledku
n10:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
147452
n3:idVysledku
RIV/67179843:_____/12:00382198
n3:jazykVysledku
n9:eng
n3:klicovaSlova
transpiration; total aboveground biomass increment; growth dynamic
n3:klicoveSlovo
n13:transpiration n13:growth%20dynamic n13:total%20aboveground%20biomass%20increment
n3:kodStatuVydavatele
BE - Belgické království
n3:kontrolniKodProRIV
[2946820C8C84]
n3:nazevZdroje
Acta Horticulturae
n3:obor
n8:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n6:SP%2F2D1%2F70%2F08 n6:SP%2F2D1%2F93%2F07 n6:ED1.1.00%2F02.0073
n3:rokUplatneniVysledku
n18:2012
n3:svazekPeriodika
951
n3:tvurceVysledku
Slípková, Romana Pokorný, Radek
n3:zamer
n17:AV0Z60870520
s:issn
0567-7572
s:numberOfPages
8