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| rdf:type
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| Description
| - A dual-permeability model (S_1D_DUAL) was developed to simulate the transport of land-applied pesticides in macroporous media. In this model, one flow domain was represented by the bulk matrix and the other by the preferential flow domain (PFD) where water and chemicals move at faster rates. It was conceptualized that sorption and biodegradation rates vary with soil depth as well as in each of the two flow domains. In addition to equilibrium sorption, kinetic sorption was simulated in the PFD. Simulations were conducted to evaluate the combined effects of preferential flow, depth- and domain-variant sorption, and degradation on the leaching of two pesticides: one with strong sorption potential and the other with weak sorption potential. For an intense storm event, slow sorption reaction rates in the PFD produced higher breakthrough concentrations of atrazine at the bottom of the simulated soil profile, thus posing the risk for breakthrough of chemicals from the root zone.
- A dual-permeability model (S_1D_DUAL) was developed to simulate the transport of land-applied pesticides in macroporous media. In this model, one flow domain was represented by the bulk matrix and the other by the preferential flow domain (PFD) where water and chemicals move at faster rates. It was conceptualized that sorption and biodegradation rates vary with soil depth as well as in each of the two flow domains. In addition to equilibrium sorption, kinetic sorption was simulated in the PFD. Simulations were conducted to evaluate the combined effects of preferential flow, depth- and domain-variant sorption, and degradation on the leaching of two pesticides: one with strong sorption potential and the other with weak sorption potential. For an intense storm event, slow sorption reaction rates in the PFD produced higher breakthrough concentrations of atrazine at the bottom of the simulated soil profile, thus posing the risk for breakthrough of chemicals from the root zone. (en)
- Pohyb dvou vybraných pesticidů byl simulován modelem založeným na principu duální permeability. Tento model předpokládá existenci dvou vzájemně komunikujících pórových domén: půdní matrice (pomalá doména) a domény preferenčních cest (rychlá doména). V našem příspěvku jsme přepokládali, že se sorpce a biodegradace může lišit s půdní hloubkou a také v obou doménách. Kromě rovnovážné sorpce byla uvažována sorpce nerovnovážná. Simulace byly provedeny za účelem objasnění kombinace vlivů preferenčního proudění, heterogenní sorpce a degradace na průnik dvou pesticidů. Jeden z pesticidů vykazoval silnou sorpci a druhý velmi slabou sorpcí. Pomalá reakce sorpce v doméně preferenčních cest způsobila po intenzivní srážce větší odezvu simulovaných koncentrací atrazinu na spodním okraji půdního profilu. Toto zjištění představuje zvýšené riziko průniku chemické látky skrze kořenovou zónu. (cs)
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| Title
| - Modeling depth-variant and domain-specific sorption and biodegradation in dual-permeability media
- Modeling depth-variant and domain-specific sorption and biodegradation in dual-permeability media (en)
- Modelování heterogenní sorpce a biodegradace v prostředí s duální propustností (cs)
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| skos:prefLabel
| - Modeling depth-variant and domain-specific sorption and biodegradation in dual-permeability media
- Modeling depth-variant and domain-specific sorption and biodegradation in dual-permeability media (en)
- Modelování heterogenní sorpce a biodegradace v prostředí s duální propustností (cs)
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| skos:notation
| - RIV/68407700:21110/04:01105064!RIV/2005/MSM/211105/N
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/04:01105064
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Biodegradation; Depth variant; Domain specific; Macropore; Models; Preferential flow; Sorption; dual permeability (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Journal of Contaminant Hydrology
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Ray, C.
- Dušek, Jaromír
- Vogel, Tomáš
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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