About: Forest watershed runoff changes determined using the unit hydrograph method

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Unit hydrograph is a basic method to show changes in runoff in the watershed. The investigation of runoff changes was carried out in the U Dvou louček watershed situated at the summit part of the Orlické hory Mts., East Bohemia. The waveform ordinates of recession limbs of unit hydrographs obtained using a common approach had to be approximated by the least-squares method. Final hydrographs reflected both drainage treatment and forest stand growth influencing the runoff from the watershed. Both factors increase culmination in synergy and reduce runoff on the recession limb of the hydrograph. We confirmed increased maximum runoff taking up 25-30% of the total runoff time when waterlogged sites were drained. The culmination increased by 0.2-0.8 mm/hour indicates the runoff increased by 2-8 m3/ha/hr. Unit hydrograph is a basic method to show changes in runoff in the watershed. The investigation of runoff changes was carried out in the U Dvou louček watershed situated at the summit part of the Orlické hory Mts., East Bohemia. The waveform ordinates of recession limbs of unit hydrographs obtained using a common approach had to be approximated by the least-squares method. Final hydrographs reflected both drainage treatment and forest stand growth influencing the runoff from the watershed. Both factors increase culmination in synergy and reduce runoff on the recession limb of the hydrograph. We confirmed increased maximum runoff taking up 25-30% of the total runoff time when waterlogged sites were drained. The culmination increased by 0.2-0.8 mm/hour indicates the runoff increased by 2-8 m3/ha/hr. (en) Jednotkový hydrogram je základní metodou ukazující změny odtoku v povodí. Toto sledování změn odtoku bylo provedeno v rámci povodí U Dvou louček, nacházejícího se ve vrcholové partii Orlických hor. Souřadnice křivky poklesové větve jednotkového hydrogramu získané klasickým postupem musely být aproximovány metodou nejmenších čtverců. Konečné hydrogramy ukazují změny odtoku z povodí jak v důsledku vlivu hydromelioračního zásahu, tak vlivu vyvíjejícího se lesního porostu. Oba tyto faktory společně zvyšují kulminaci a redukují odtok vyjádřený poklesovou větví hydrogramu. Bylo potvrzeno, že odvodnění v hydromorfních stanovištích zvyšuje odtok po dobu 25-30 % celkového trvání odtoku. Zvýšení kulminace o 0,2-0,8 mm za hodinu představuje odtok navýšený o 2-8 m3/ha/hod. (cs)
Title	Forest watershed runoff changes determined using the unit hydrograph method Změny odtoku z lesního povodí určované metodou jednotkového hydrogramu (cs) Forest watershed runoff changes determined using the unit hydrograph method (en)
skos:prefLabel	Forest watershed runoff changes determined using the unit hydrograph method Změny odtoku z lesního povodí určované metodou jednotkového hydrogramu (cs) Forest watershed runoff changes determined using the unit hydrograph method (en)
skos:notation	RIV/00020702:_____/09:#0000338!RIV09-MZE-00020702
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1G57016), P(QH92073), Z(MZE0002070201)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Černohous, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Výzkumný ústav lesního hospodářství a myslivosti, v.v.i.
http://linked.open...dnocenehoVysledku	315362
http://linked.open...ai/riv/idVysledku	RIV/00020702:_____/09:#0000338
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	forest watershed; drainage; runoff; unit hydrograph (en)
http://linked.open.../riv/klicoveSlovo	unit hydrograph forest watershed drainage runoff
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[F6EBB60904AB]
http://linked.open...i/riv/nazevZdroje	Journal of Forest Science
http://linked.open...in/vavai/riv/obor	GK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Precipitation-runoff conditions of mountain forests and their possibilities in mitigating ex-treme situations - floods and drought Mountain forests - basic ecosystems influencing water balance, spates and dry periods in landscape
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	55
http://linked.open...iv/tvurceVysledku	Černohous, Vladimír Kovář, P.
http://linked.open...n/vavai/riv/zamer	Stabilization of the forest functions in biotopes disturbed by anthropogenic activity under changing ecological conditions
issn	1212-4834
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Forest watershed runoff changes determined using the unit hydrograph method Forest watershed runoff changes determined using the unit hydrograph method Forest watershed runoff changes determined using the unit hydrograph method Forest watershed runoff changes determined using the unit hydrograph method

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