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Titolo:
EFFECT OF CHANGING TEMPERATURE AND WATER-TABLE ON TRACE GAS EMISSION FROM MINEROTROPHIC MIRES
Autore:
AUGUSTIN J; MERBACH W; SCHMIDT W; REINING E;
Indirizzi:
ZENTRUM AGRALANDSCHAFTS & LANDNUTZUNGSFORSCH EV,INST RHIZOSPHARENFORSCH & PFLANZENERNAHRUNG D-15374 MUNCHEBERG GERMANY
Titolo Testata:
Journal of Applied Botany
fascicolo: 1-2, volume: 70, anno: 1996,
pagine: 45 - 51
SICI:
0949-5460(1996)70:1-2<45:EOCTAW>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
NORTHERN PEATLANDS; METHANE; WETLANDS; DYNAMICS; FOREST; SOILS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
J. Augustin et al., "EFFECT OF CHANGING TEMPERATURE AND WATER-TABLE ON TRACE GAS EMISSION FROM MINEROTROPHIC MIRES", Journal of Applied Botany, 70(1-2), 1996, pp. 45-51

Abstract

Peatlands, hydromorphous soils with high organic matter content, display, as a result of anaerobic conditions, a delayed litter decomposition and therefore constitute important terrestric sinks for carbon and nitrogen compounds. In spite of their relatively small area proportionof approx. 3% (3.88-4.38 x 10(6) km(2)), peatlands contain approx. 30% of the world's soil carbon and nitrogen reserves. Several signs indicate that substantial drainage and increasing temperatures due to the increasing cultivation of peatlands and the global climate change could result in a large-scale conversion of peatlands from C/N sinks to C/N sources. Irrespective of many uncertain details and complex interactions with other factors, the lowering of the groundwater table of peatlands actually seems to strongly enhance the net release of the radiatively active trace gases carbon dioxide and nitrous oxide, reducing atthe same time the high emissions of methane that occur in natural peatlands. The antizipated climate change will probably induce large-scale shifts in the distribution of the different peatland ecosystems along with considerable changes of the trace gas emissions. In view of this development, a net loss of global peatland area along with an increase in their contribution to the greenhouse effect must be expected.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 10:00:07