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Titolo:
Decomposition of coniferous forest litter along a heavy metal pollution gradient, south-west Finland
Autore:
McEnroe, NA; Helmisaari, HS;
Indirizzi:
Finnish Forest Res Inst, Vantaa Res Ctr, FIN-01301 Vantaa, Finland FinnishForest Res Inst Vantaa Finland FIN-01301 N-01301 Vantaa, Finland
Titolo Testata:
ENVIRONMENTAL POLLUTION
fascicolo: 1, volume: 113, anno: 2001,
pagine: 11 - 18
SICI:
0269-7491(2001)113:1<11:DOCFLA>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCOTS PINE FOREST; CU-NI SMELTER; LONG-TERM DECOMPOSITION; NEEDLE LITTER; SW FINLAND; SOIL; MICROORGANISMS; ACCUMULATION; DYNAMICS; VICINITY;
Keywords:
heavy metals; mass loss; nutrient analysis; fine root and needle litter; soil microbiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Helmisaari, HS Finnish Forest Res Inst, Vantaa Res Ctr, POB 18, FIN-01301 Vantaa, Finland Finnish Forest Res Inst POB 18 Vantaa Finland FIN-01301 nd
Citazione:
N.A. McEnroe e H.S. Helmisaari, "Decomposition of coniferous forest litter along a heavy metal pollution gradient, south-west Finland", ENVIR POLLU, 113(1), 2001, pp. 11-18

Abstract

The decomposition of Scots pine (Pinus sylvestris) fine root and needle litter was examined along a heavy metal pollution gradient in the vicinity ofHarjavalta Metals Smelter complex at Harjavalta, south-west Finland. The stud. area was found to exhibit a defined gradient of copper and nickel soilcontamination along a 8 km long transect starting at 0.5 km from the pointemission source with the highest levels found at this site. The backgroundsite is located 200 km from the point source. The majority of the heavy metals an confined to the soil organic laver. Litter decomposition and litterquality were compared between litter typos after 12, 18, and 30 months incubation at each of four sites. The analyses clearly showed differences in accumulated mass loss, C:N ratio, and nutrient composition that were relatedto the site of incubation. Needle and fine root litter that was incubated at 0.5 km had a lower accumulated mass loss, 28.1 and 40.9%, respectively, over time when compared to litter incubated at the background site (37.9 and 50.9%, respectively). Concentrations of exchangeable cations in the litter incubated at 0.5 km were considerably Less. The heavy metal contaminationmay provide an explanation for the amount of mass lost and the litter quality through impacts on the soil microbiota. (C) 2001 Elsevier Science ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 21:52:32