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Titolo:
The effect of liming on the soluble nitrogen pool in Norway spruce (Picea abies) exposed to high loads of nitrogen
Autore:
Gessler, A; Rennenberg, H;
Indirizzi:
Univ Freiburg, Inst Forstbot & Baumphysiol, D-79085 Freiburg, Germany UnivFreiburg Freiburg Germany D-79085 hysiol, D-79085 Freiburg, Germany
Titolo Testata:
PHYTON-ANNALES REI BOTANICAE
fascicolo: 3, volume: 40, anno: 2000,
pagine: 51 - 64
SICI:
0079-2047(2000)40:3<51:TEOLOT>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAGUS-SYLVATICA TREES; ATMOSPHERIC AMMONIA; AMINO-ACIDS; PINUS-SYLVESTRIS; FIELD CONDITIONS; NITRATE UPTAKE; N-COMPOUNDS; NET UPTAKE; L. KARST.; ROOTS;
Keywords:
needles; phloem; regulation; roots; soluble nitrogen; xylem;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Gessler, A Univ Freiburg, Inst Forstbot & Baumphysiol, Flughafen 17, D-79085 Freiburg, Germany Univ Freiburg Flughafen 17 Freiburg Germany D-79085 g, Germany
Citazione:
A. Gessler e H. Rennenberg, "The effect of liming on the soluble nitrogen pool in Norway spruce (Picea abies) exposed to high loads of nitrogen", PHYTON AUST, 40(3), 2000, pp. 51-64

Abstract

During the growing seasons 1994, 1995 and 1996 the effects of liming of the forest soil on the pools of total soluble non-protein nitrogen (TSNN) in spruce trees (Picea abies (L. ) Karst) was examined at a field site ('Hoglwald', Germany) exposed to high loads of atmospheric nitrogen. For this purpose TSNN contents of fine roots, needles (current and previous year), twig phloem and xylem and toot phloem and xylem of spruce trees grown at a plot supplied with 4000 kg calcium magnesium carbonate per ha in March 1994 were compared to untreated control trees. Liming resulted in a transient decrease in TSNN contents in fine roots, root phloem, previous year's needles, andshoot xylem that was most pronounced during the second growing season after liming and that ceased during the third growing season (1996). The observed decrease in TSNN contents in 1995 is attributed to a decrease in ammonium availability that was observed at the field site studied. The reincrease in TSNN contents in the subsequent year is supposed to be a result of changes in the regulation of pedospheric nitrogen uptake that allows the trees to adapt nitrogen absorption to their demand.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 09:03:09