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Titolo:
Distribution of assimilated carbon in the system Phragmites australis-waterlogged peat soil after carbon-14 pulse labelling
Autore:
Richert, M; Saarnio, S; Juutinen, S; Silvola, J; Augustin, J; Merbach, W;
Indirizzi:
Univ Greifswald, Inst Bot, D-17487 Greifswald, Germany Univ Greifswald Greifswald Germany D-17487 , D-17487 Greifswald, Germany Univ Joensuu, Dept Biol, FIN-80101 Joensuu, Finland Univ Joensuu JoensuuFinland FIN-80101 Biol, FIN-80101 Joensuu, Finland Crt Agr Landscape & Land Use Res ZALF eV, Inst Primary Prod & Microbial Ecol, D-15374 Muncheberg, Germany Crt Agr Landscape & Land Use Res ZALF eV Muncheberg Germany D-15374 many
Titolo Testata:
BIOLOGY AND FERTILITY OF SOILS
fascicolo: 1, volume: 32, anno: 2000,
pagine: 1 - 7
SICI:
0178-2762(200010)32:1<1:DOACIT>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORGANIC-MATTER; RHIZOSPHERE; PLANTS; WHEAT; FLOW; ACCUMULATION; FLUXES; C-14; FEN;
Keywords:
Phragmites australis; anaerobic fen soil; carbon turnover; rhizodeposition; root respiration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Richert, M Univ Halle Wittenberg, Inst Soil Sci & Plant Nutr, Adam-Kuckhoff-Str 17B, D-06108 Halle, Germany Univ Halle Wittenberg Adam-Kuckhoff-Str 17B Halle Germany D-06108
Citazione:
M. Richert et al., "Distribution of assimilated carbon in the system Phragmites australis-waterlogged peat soil after carbon-14 pulse labelling", BIOL FERT S, 32(1), 2000, pp. 1-7

Abstract

Short-term (3-6 days) and long-term (27 days) laboratory experiments were carried out to determine the distribution of assimilated C in the system Phragmites australis (common reed)-waterlogged fen soil after C-14 pulse labelling. The investigated system of fen plants and anaerobic organic soil showed different patterns of assimilated C-14 distribution when compared to systems with cultivated plants and aerobic mineral soil. Between 90% and 95% of the C-14 in the system was found in the reed plants. A maximum of 2% of the assimilated plant C-14 was released from the fen soil as CO2 and about 5-9% remained in the soil. The C-14 remaining in the waterlogged fen soil of the reed plant had the same amount as that of a cultivated plant in mineral soil, despite lower C-14-release (i.e. rhizodeposition and root respiration) from reed roots. Assuming that root respiration of fen plants is low, this indicates that microbial C turnover in waterlogged fen soil is much slower than in mineral soil. The estimated quantity of the assimilated C remaining in the soil was of an ecologically relevant order of magnitude.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 09:50:21