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| Description
| - Srovnávali jsme množství, kvalitu a rozložitelnost půdní organické hmoty (POH) v aktivní vrstvě a permafrostu sibiřské mokré tundry. Aktivní vrstva obsahuje 24 kg C m2 a permafrost do hloubky 3 m pak 70 kg C m2. Chemické složení a rozložitelnost POH v permafrostu a aktivní vrstvě byly podobné, až na několik výjimek. POH v permafrostu obsahovala větší podíl látek rozpustných ve vodě, což ukazuje na větší mobilitu a možnost vymývání POH při tání permafrostu vlivem globálních změn klimatu, a dále byla zjištěna vyšší koncentace dostupných živin (N, P). Svrchní vrstva permafrostu (1 m), která podle předpovědí může roztát do roku 2100, má srovnatelný mineralizační potenciál jako současná aktivní vrstva (0.5 m). Naše výsledky ukazují, že permafrost obsahuje (1) značné množství POH s podobným složením a rozložitelností jako současná aktivní vrstva, (2) početné mikrobiální společenstvo, které je schopné ve vhodných podmínkách aktivní rozkládat přítomnou POH. (cs)
- Soil organic matter (SOM) quality and biodegradability the permafrost underlying Siberian wet tussock tundra (Kolyma river basin, northeast Siberia) were analyzed and compared to the characteristics of the contemporary active layer. For this purpose, three permafrost affected soil cores (down to 3m depth) and seven active layer soil cores (down to 0.3m depth) were sampled. The samples were divided into particular layers, which were analyzed separately. SOM stability was assessed using a simple chemical fractionation (sequential extraction by cold and hot water, and hot acid). SOM biodegradability and soil mineralization potentials were tested in short-term laboratory incubations. The active layer contained 24 kg C m2 and 70 kg C m2 was preserved in 3 m of permafrost. The chemical quality and biodegradability of permafrost SOM were very similar to that of the active layer mineral horizon, and independent from depth. The only exceptions were (1) higher solubility of permafrost SOM in water, indicating i
- Soil organic matter (SOM) quality and biodegradability the permafrost underlying Siberian wet tussock tundra (Kolyma river basin, northeast Siberia) were analyzed and compared to the characteristics of the contemporary active layer. For this purpose, three permafrost affected soil cores (down to 3m depth) and seven active layer soil cores (down to 0.3m depth) were sampled. The samples were divided into particular layers, which were analyzed separately. SOM stability was assessed using a simple chemical fractionation (sequential extraction by cold and hot water, and hot acid). SOM biodegradability and soil mineralization potentials were tested in short-term laboratory incubations. The active layer contained 24 kg C m2 and 70 kg C m2 was preserved in 3 m of permafrost. The chemical quality and biodegradability of permafrost SOM were very similar to that of the active layer mineral horizon, and independent from depth. The only exceptions were (1) higher solubility of permafrost SOM in water, indicating i (en)
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| Title
| - Quality and potential biodegradability of soil organic matter preserved in permafrost of Siberian tussock tundra
- Quality and potential biodegradability of soil organic matter preserved in permafrost of Siberian tussock tundra (en)
- Kvalita a potenciální rozložitelnost půdní organické hmoty v permafrostu sibiřské tundry (cs)
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| skos:prefLabel
| - Quality and potential biodegradability of soil organic matter preserved in permafrost of Siberian tussock tundra
- Quality and potential biodegradability of soil organic matter preserved in permafrost of Siberian tussock tundra (en)
- Kvalita a potenciální rozložitelnost půdní organické hmoty v permafrostu sibiřské tundry (cs)
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| skos:notation
| - RIV/60076658:12310/07:00007963!RIV08-MSM-12310___
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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/60076658:12310/07:00007963
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - permafrost; carbon storage; mineralization potential; Tundr; climate change (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Soil Biology & Biochemistry
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| http://linked.open...in/vavai/riv/obor
| |
| 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
| - Šantrůčková, Hana
- Uhlířová, Eva
- Davidov, S. P.
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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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| is http://linked.open...avai/riv/vysledek
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