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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F14%3A00442639%21RIV15-AV0-67179843
rdf:type
n7:Vysledek skos:Concept
dcterms:description
The changes of the carbon cycle in intensively managed agroecosystems (that cover 50% of Europe) significantly contribute to the knowledge of Global Climate Change. A new ecosystem station for eddy covariance, biometeorological and physiological measurements was established in Křešín in April 2012. Here we present the first results including the footprint, wind analysis, and CO2 flux measurements. The prevailing wind directions are W and SE. The footprint analysis shows that in W and SE directions the agroecosystem is the principal source area for eddy flux measurements. The result is less significant for a stable atmospheric stratification, but those data have been excluded from the analysis in about 60 % as a result of insufficiently developed turbulence. In addition to eddy covariance fluxes we focused on the CO2 flux (an important greenhouse gas whose molecules interfere with basic physiological processes, photosynthesis and respiration). In an agroecosystem, the CO2 flux has a clear annual course related to the development of crop and weather conditions. We show the connections between the flux and the seasons of the year as well as the weather parameters. The changes of the carbon cycle in intensively managed agroecosystems (that cover 50% of Europe) significantly contribute to the knowledge of Global Climate Change. A new ecosystem station for eddy covariance, biometeorological and physiological measurements was established in Křešín in April 2012. Here we present the first results including the footprint, wind analysis, and CO2 flux measurements. The prevailing wind directions are W and SE. The footprint analysis shows that in W and SE directions the agroecosystem is the principal source area for eddy flux measurements. The result is less significant for a stable atmospheric stratification, but those data have been excluded from the analysis in about 60 % as a result of insufficiently developed turbulence. In addition to eddy covariance fluxes we focused on the CO2 flux (an important greenhouse gas whose molecules interfere with basic physiological processes, photosynthesis and respiration). In an agroecosystem, the CO2 flux has a clear annual course related to the development of crop and weather conditions. We show the connections between the flux and the seasons of the year as well as the weather parameters.
dcterms:title
Eddy covariance measurement in an agoecosystem in Křešín u Pacova Eddy covariance measurement in an agoecosystem in Křešín u Pacova
skos:prefLabel
Eddy covariance measurement in an agoecosystem in Křešín u Pacova Eddy covariance measurement in an agoecosystem in Křešín u Pacova
skos:notation
RIV/67179843:_____/14:00442639!RIV15-AV0-67179843
n4:aktivita
n15:I n15:P
n4:aktivity
I, P(ED1.1.00/02.0073), P(EE2.4.31.0056), P(LM2010007)
n4:dodaniDat
n10:2015
n4:domaciTvurceVysledku
n5:6304370 n5:6730256 n5:2250918 n5:1290320
n4:druhVysledku
n9:C
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
12960
n4:idVysledku
RIV/67179843:_____/14:00442639
n4:jazykVysledku
n8:eng
n4:klicovaSlova
carbon cycle; eddy covariance; agrosystem; Křešín u Pacova
n4:klicoveSlovo
n12:agrosystem n12:carbon%20cycle n12:eddy%20covariance n12:K%C5%99e%C5%A1%C3%ADn%20u%20Pacova
n4:kontrolniKodProRIV
[88EC2F0D8A83]
n4:mistoVydani
Prague
n4:nazevZdroje
Košetice Observatory - 25 Years
n4:obor
n18:EH
n4:pocetDomacichTvurcuVysledku
4
n4:pocetStranKnihy
91
n4:pocetTvurcuVysledku
4
n4:projekt
n6:ED1.1.00%2F02.0073 n6:EE2.4.31.0056 n6:LM2010007
n4:rokUplatneniVysledku
n10:2014
n4:tvurceVysledku
Havránková, Kateřina Sedlák, Pavel Pavelka, Marian Šigut, Ladislav
s:numberOfPages
7
n17:hasPublisher
Czech Hydrometeorological Institute
n19:isbn
978-80-87577-40-0