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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F13%3A00423486%21RIV14-MSM-67179843
rdf:type
n6:Vysledek skos:Concept
dcterms:description
Manual measurements of soil CO2 effl ux on a larger number of positions can give precise estimation of CO2 effl ux from the investigated area and together with temporal dynamics, observed in continuous measurements, can provide a good view on the ecosystem carbon balance. In this study we investigated the spatial heterogeneity of soil CO2 effl ux in four diff erent ecosystems (spruce forest, beech forest, wetland, grassland). Soil CO2 was measured on a net of 25–65 positions using a manual measurement system. We tried to fi nd responsible factors for the heterogeneity and to determine a measurement protocol for the most precise estimation of soil CO2 effl ux. Th e highest respiration activity was observed in the spruce forest, the lowest in the wetland ecosystem, where it was caused by a high water table. In the wetland ecosystem, there was the highest spatial heterogeneity of respiration activity, which reached almost 60 %. Th is high heterogeneity was caused by the gradient of the water table depth. Contrary to this, the lowest heterogeneity was found in the grassland where it was only about 15 %. In the spruce and beech forest the heterogeneity ranged between 35 and 45 %. As infl uencing factors we investigated e.g. soil moisture, tree distance and amount of the above ground biomass. Manual measurements of soil CO2 effl ux on a larger number of positions can give precise estimation of CO2 effl ux from the investigated area and together with temporal dynamics, observed in continuous measurements, can provide a good view on the ecosystem carbon balance. In this study we investigated the spatial heterogeneity of soil CO2 effl ux in four diff erent ecosystems (spruce forest, beech forest, wetland, grassland). Soil CO2 was measured on a net of 25–65 positions using a manual measurement system. We tried to fi nd responsible factors for the heterogeneity and to determine a measurement protocol for the most precise estimation of soil CO2 effl ux. Th e highest respiration activity was observed in the spruce forest, the lowest in the wetland ecosystem, where it was caused by a high water table. In the wetland ecosystem, there was the highest spatial heterogeneity of respiration activity, which reached almost 60 %. Th is high heterogeneity was caused by the gradient of the water table depth. Contrary to this, the lowest heterogeneity was found in the grassland where it was only about 15 %. In the spruce and beech forest the heterogeneity ranged between 35 and 45 %. As infl uencing factors we investigated e.g. soil moisture, tree distance and amount of the above ground biomass.
dcterms:title
Spatial heterogeneity of soil CO2 efflux in four different ecosystems Spatial heterogeneity of soil CO2 efflux in four different ecosystems
skos:prefLabel
Spatial heterogeneity of soil CO2 efflux in four different ecosystems Spatial heterogeneity of soil CO2 efflux in four different ecosystems
skos:notation
RIV/67179843:_____/13:00423486!RIV14-MSM-67179843
n6:predkladatel
n7:ico%3A67179843
n4:aktivita
n18:P n18:I
n4:aktivity
I, P(ED1.1.00/02.0073), P(EE2.3.20.0256), P(LM2010007)
n4:dodaniDat
n20:2014
n4:domaciTvurceVysledku
n17:4084268
n4:druhVysledku
n5:D
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n16:predkladatel
n4:idSjednocenehoVysledku
106795
n4:idVysledku
RIV/67179843:_____/13:00423486
n4:jazykVysledku
n21:eng
n4:klicovaSlova
ecosystems; spatial heterogeneity; soil CO2
n4:klicoveSlovo
n11:soil%20CO2 n11:spatial%20heterogeneity n11:ecosystems
n4:kontrolniKodProRIV
[DD75DD45504F]
n4:mistoKonaniAkce
Brno
n4:mistoVydani
Brno
n4:nazevZdroje
Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference
n4:obor
n15:EH
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n10:EE2.3.20.0256 n10:LM2010007 n10:ED1.1.00%2F02.0073
n4:rokUplatneniVysledku
n20:2013
n4:tvurceVysledku
Dařenová, Eva
n4:typAkce
n13:EUR
n4:zahajeniAkce
2013-05-22+02:00
s:numberOfPages
5
n12:hasPublisher
Global change research centre, Academy of Sciences of the Czech Republic, v. v. i
n8:isbn
978-80-904351-8-6