2000
DOI: 10.1051/forest:2000102
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Bilans d'�l�ments min�raux dans de petits bassins versants forestiers de Galice (NW Espagne)

Abstract: (Reçu le 15 février 1999 ; accepté le 3 mai 1999)Résumé -Afin d'estimer la pérennité de l'alimentation minérale de plantations forestières de Pinus pinaster et Eucalyptus globulus de forte productivité en Galice, nous avons calculé des bilans (entrées-sorties) d'éléments minéraux dans trois petits bassins versants. Dans chacun de ces trois bassins, les sorties par drainage de Ca, Mg et K sont inférieures aux entrées par les pluies. Cette particularité est attribuée à la relative pauvreté en cations alcalino-te… Show more

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Cited by 23 publications
(18 citation statements)
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“…Branches were analyzed at the complete branch scale whereas the stem tissues (bark; phloem; sapwood; heartwood) and the aggregated compartments of the stem (stemwood=sapwood and heartwood merged; stem=bark, phloem, sapwood and heartwood merged) were analyzed at the annual shoot scale. CS = values in current study; LR = values from a literature review (n = 4-6): Merino et al (2005) stand age 40 y; Dambrine et al (2000) = 43 y; Montero et al (1999) = 45 y; Fernandez-Prida (1977): mean of 18 stands, age not mentioned; Ferretti et al (1993) = 117 y (n = 1 wood disk from 1 tree); Keay and Turton (1970) = 14 y (mean of P-fertilised and control plots).…”
Section: Stem and Stem Tissuesmentioning
confidence: 99%
“…Branches were analyzed at the complete branch scale whereas the stem tissues (bark; phloem; sapwood; heartwood) and the aggregated compartments of the stem (stemwood=sapwood and heartwood merged; stem=bark, phloem, sapwood and heartwood merged) were analyzed at the annual shoot scale. CS = values in current study; LR = values from a literature review (n = 4-6): Merino et al (2005) stand age 40 y; Dambrine et al (2000) = 43 y; Montero et al (1999) = 45 y; Fernandez-Prida (1977): mean of 18 stands, age not mentioned; Ferretti et al (1993) = 117 y (n = 1 wood disk from 1 tree); Keay and Turton (1970) = 14 y (mean of P-fertilised and control plots).…”
Section: Stem and Stem Tissuesmentioning
confidence: 99%
“…It is thought that these changes may be partially caused by the removal of nutrient-rich residues and by increased decomposition following clear-felling. Other studies [9] point out that the relatively low release of Ca and Mg by weathering and the strong mineral uptake of fast growing stands can lead to negative nutrient budgets.…”
Section: Introductionmentioning
confidence: 99%
“…As sustaining productivity of eucalypt plantations will be largely dependent on the fertility enhancement from silvicultural practices, there are concerns about maintaining nutrient availability under those plantations. Retention of organic residues as the result of tree harvest is crucial for managing site fertility in forest plantations [35], mainly when occupy soils with low reserves of nutrients [12]. Large amounts of harvest residues, especially woody residues (branches) with high C/N ratio, may have a high potential for N immobilization during decomposition, after harvesting, and to release immobilized N at a later stage of decomposition [6,35], affecting N availability to trees the following rotation.…”
Section: Introductionmentioning
confidence: 99%