Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Budgets of mineral elements in small forested catchments in Galicia (NW Spain)
Autore:
Dambrine, E; Vega, JA; Taboada, T; Rodriguez, L; Fernandez, C; Macias, F; Gras, JM;
Indirizzi:
INRA, Equipe Cycles Biogeochim, F-54280 Champenoux, France INRA Champenoux France F-54280 es Biogeochim, F-54280 Champenoux, France Univ Biol, Dept Edafol, Santiago 15706, Spain Univ Biol Santiago Spain 15706 Biol, Dept Edafol, Santiago 15706, Spain Ctr Invest Forestal, Lourizan 36080, Pontevedra, Spain Ctr Invest Forestal Lourizan Pontevedra Spain 36080 80, Pontevedra, Spain
Titolo Testata:
ANNALS OF FOREST SCIENCE
fascicolo: 1, volume: 57, anno: 2000,
pagine: 23 - 38
SICI:
1286-4560(200001)57:1<23:BOMEIS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
FRE
Soggetto:
RAIN-FOREST; BALANCE; GROWTH; SOILS;
Keywords:
catchment; Eucalyptus globulus; Pinus pinaster; weathering; Galicia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Dambrine, E INRA, Equipe Cycles Biogeochim, F-54280 Champenoux, France INRA Champenoux France F-54280 m, F-54280 Champenoux, France
Citazione:
E. Dambrine et al., "Budgets of mineral elements in small forested catchments in Galicia (NW Spain)", ANN FOR SCI, 57(1), 2000, pp. 23-38

Abstract

In order to assess the sustainability of mineral supply to fast growing Eucalyptus globulus and Pinus pinaster stands in Galice (NW Spain), we calculated (input-output) nutrient budgets in three small catchments: the Castrove and Jabali catchments with eucalyptus on a base poor granite and the Arcos catchment with pine on granodiorite. In each catchment, the annual drainage output was lower than the rainwater input for Ca, Mg and K. This particularity is attributed to (a) the relative low content of Ca and Mg of the parent material, (b) the very low concentrations of NO3 and SO4 of drainage water in an area with very low level of atmospheric pollution, and (c) to the strong mineral uptake of fast growing stands. The present management of forests leads to negative budgets, both in the eucalyptus and pine catchments. But the traditional management of pine stands including the harvest of needles and branches was much more impoverishing than the present managementof eucalyptus stands, where timber is the only harvested product. Various estimates of the weathering rate suggest that this flux is sufficient to compensate for the losses in the catchment on granodiorite but probably insufficient on granite. Since nitrogen deposition is extremely low, and forest fires are quite frequent, the symbiotic fixation of large amounts of nitrogen is needed in order to ensure the sustainability of forest growth.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 00:16:35