About: Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Meteorological indices, based mainly on only precipitation or temperature and precipitation did not correlate well (R2 <0.30) to yield depression of the investigated crops by drought when they were applied only for the main growing period (3 month) of the crops. Through the application of agrometeorological methods or indices the correlation could be improved significantly (R2 >0.30), because they consider information about soil water storage capacity and crop status. The best correlation of R2=0.67 (based on the year 2003 only) was found by using a relative available soil water depletion value from the simplified soil water balance model (FAO model), related to the 3 month main growing period. These results also disclose a high spatial variability of actual drought stress levels due to the high spatial variability of soil conditions, which are not considered by meteorological indices. Remote sensing indices showed a very good relationship to yield depression in 2003 at the field scale (R2= Meteorological indices, based mainly on only precipitation or temperature and precipitation did not correlate well (R2 <0.30) to yield depression of the investigated crops by drought when they were applied only for the main growing period (3 month) of the crops. Through the application of agrometeorological methods or indices the correlation could be improved significantly (R2 >0.30), because they consider information about soil water storage capacity and crop status. The best correlation of R2=0.67 (based on the year 2003 only) was found by using a relative available soil water depletion value from the simplified soil water balance model (FAO model), related to the 3 month main growing period. These results also disclose a high spatial variability of actual drought stress levels due to the high spatial variability of soil conditions, which are not considered by meteorological indices. Remote sensing indices showed a very good relationship to yield depression in 2003 at the field scale (R2= (en) Příspěvek hodnotí vypovídací schopnost agrometeorologických indexů, růstových modelů a metod dálkového průzkumu při posuzování dopadu vlivu na výnos vybraných zemědělských plodin (cs)
Title	Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria (en) Srovnání metod pro odhad dopadu sucha na výnos zemědělských plodin v Rakousku (cs)
skos:prefLabel	Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria (en) Srovnání metod pro odhad dopadu sucha na výnos zemědělských plodin v Rakousku (cs)
skos:notation	RIV/62156489:43210/05:00087240!RIV06-GA0-43210___
http://linked.open.../vavai/riv/strany	8568;8568
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA521/02/0827)
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Trnka, Miroslav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Agronomická fakulta
http://linked.open...dnocenehoVysledku	515853
http://linked.open...ai/riv/idVysledku	RIV/62156489:43210/05:00087240
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	crop modeling; drought; drought meteorological indicies (en)
http://linked.open.../riv/klicoveSlovo	drought drought meteorological indicies crop modeling
http://linked.open...ontrolniKodProRIV	[BC89392E54C0]
http://linked.open...i/riv/nazevZdroje	Geophysical Research Abstracts
http://linked.open...in/vavai/riv/obor	GC
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	The yield potential of the winter wheat in the Czech Republic - spatial assessment for the present and changed climate
http://linked.open...UplatneniVysledku	2005
http://linked.open...iv/tvurceVysledku	Eitzinger, Josef Trnka, Miroslav Gruszczynski, Gregorz Koukal, Tatjana Suppan, Franz
issn	1029-7006
number of pages	1 (xsd:int)
http://purl.org/ne...btex#hasPublisher	European Geosciences Union
http://localhost/t...ganizacniJednotka	43210
is http://linked.open...avai/riv/vysledek of	Comparison of different methods for estimation of drought impacts on crop yield on the field scale in Austria

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