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Titolo:
Controlling factors and effects of chronic nitrogen and sulphur depositionon methane oxidation in a temperate forest soil
Autore:
Bradford, MA; Wookey, PA; Ineson, P; Lappin-Scott, HM;
Indirizzi:
Univ Exeter, Dept Biol Sci, Hatherly Labs, Exeter EX4 4PS, Devon, England Univ Exeter Exeter Devon England EX4 4PS , Exeter EX4 4PS, Devon, England Inst Terr Ecol, Merlewood Res Stn, Grange Sands LA11 6JU, Cumbria, EnglandInst Terr Ecol Grange Sands Cumbria England LA11 6JU JU, Cumbria, England Uppsala Univ, Inst Earth Sci, Dept Phys Geog, S-75236 Uppsala, Sweden Uppsala Univ Uppsala Sweden S-75236 t Phys Geog, S-75236 Uppsala, Sweden
Titolo Testata:
SOIL BIOLOGY & BIOCHEMISTRY
fascicolo: 1, volume: 33, anno: 2001,
pagine: 93 - 102
SICI:
0038-0717(200101)33:1<93:CFAEOC>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRACE GAS FLUXES; ATMOSPHERIC METHANE; SPRUCE FOREST; AMMONIUM INHIBITION; CONIFEROUS FORESTS; CH4 CONSUMPTION; N AVAILABILITY; ACID-RAIN; RESPONSES; ECOSYSTEMS;
Keywords:
methane oxidation; methane consumption; acid deposition; nitrogen fertilization; sulphur deposition; forest soil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Bradford, MA Univ London Imperial Coll Sci Technol & Med, NERC, Ctr Populat Biol, Silwood Pk, Ascot SL5 7PY, Berks, England Univ London Imperial CollSci Technol & Med Silwood Pk Ascot Berks England SL5 7PY
Citazione:
M.A. Bradford et al., "Controlling factors and effects of chronic nitrogen and sulphur depositionon methane oxidation in a temperate forest soil", SOIL BIOL B, 33(1), 2001, pp. 93-102

Abstract

Soil CH4 flux rates were determined on 28 occasions between June 1996 and July 1997 in a temperate deciduous woodland in south-west England. The effects of environmental and edaphic factors on flux rates and the effects of chronic deposition of sulphuric acid, nitric acid and ammonium sulphate wereinvestigated. The soil was a consistent net CH4 oxidiser, with mean (n = 10) oxidation rates for plots exposed to ambient throughfall ranging from 44.3 to 110.6 mug CH4 m(-2) h(-1) between samplings; net CH4 production was not observed. The annual mean uptake rate differed by only 6% from the annual mean flux calculated from the literature for other studies of >364 d duration in temperate and boreal deciduous woodlands. The CH4 uptake rates werecorrelated with soil water potential (square-root transformed), temperature and depth of organic horizon (r(2) = 0.78, 0.30 and 0.41, respectively). Soil water potential was the best predictor of net CH4 oxidation rates and when temperature was added to the regression model no improvement in the r2was observed. The chronic deposition of sulphuric acid stimulated net methane oxidation (P < 0.05), while the chronic deposition of nitric acid and ammonium sulphate had no significant effect. (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 13:42:59