The effect of organic-matter management on the productivity of Eucalyptus globulus stands in Spain and Portugal: tree growth and harvest residue decomposition in relation to site and treatment

Jones, Helen; Madeira, Manuel; Herraez, L; Dighton, John; Fabião, António; González-Río, F.; Fernández-Marcos, María Luisa; Gómez, C. C.; Tomé, Margarida; Feith, Henk; Magalhães, M. Clara F.; Howson, G.

doi:10.1016/s0378-1127(99)00033-x

Cited by 74 publications

(61 citation statements)

References 19 publications

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“…Differences in mass loss between LeBur and LeSur during the incubation period began to occur in the early phase of decomposition. Considering the whole decomposition period, the annual decay rate for the LeSur (-0.48) was significantly lower than for LeBur (-0.95), which is in agreement with results reported by Azevedo et al (2004) and Jones et al (1999) for harvest residues of eucalypt plantations in Portugal. The annual decay rate of the LeSur increased from the first year to the end of the decomposition experiment, while that of LeBur was approximately constant (Tab.…”

Section: Litter-mass Loss and Decay Ratessupporting

confidence: 92%

Decomposition of chestnut litterfall and eight-year soil chemical changes under a no-tillage management system in Northern Portugal

Raimundo

Martins

Madeira³

2008

Ann. For. Sci.

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-• Chestnut stands (Castanea sativa Mill.) for fruit production, in Northern Portugal, are subjected to frequent soil tillage operations, which is considered a threat for the system sustainability.• The effects of replacement of conventional tillage by the no-tillage system in chestnut stands on decomposition and nutrient dynamics of leaf litter and burs were evaluated, using the litterbag methodology. Amounts of mass and nutrients in the organic layers, and chemical characteristics of the 0-20 cm top soil layer were assessed after eight years.• The mass loss and release of N, P, Ca and Mg from both leaves and burs buried in the soil were faster than from those placed on the soil surface. Burs decomposed and released nutrients more slowly than leaf litter. The no-tillage system led to the formation of organic layers, which retained great amounts of N (249.2 kg ha −1 ) and Ca (215.5 kg ha −1 ). Such a management system increased the concentration of organic C and nutrients in the 0-5 cm top soil layer, but significant differences were only observed for exchangeable Ca.• The no-tillage system may enhance organic C accumulation regarding the conventional system, due to the increment in both organic and mineral soil layers.litterfall decomposition / litterbag / nutrient dynamics / chestnut stand / soil management / decomposition models / no-tillage / conventional tillage Résumé -Décomposition des chutes de litière de châtaignier et huit années de changements chimiques du sol sous un système de gestion sans labour dans le Nord du Portugal.• Les peuplements de châtaignier (Castanea sativa Mill.) pour la production de fruits dans le Nord du Portugal font l'objet de fréquentes opérations de labour, qui sont considérées comme une menace pour un système de gestion durable.• Les effets de remplacement du labour traditionnel par un système sans labour dans les peuplements de châtaignier sur la décomposition et la dynamique des nutriments des feuilles de la litière et des bogues, ont été évalués en utilisant la technique des sacs à litière. La masse totale des nutriments dans les strates organiques et les caractéristiques chimiques de la partie supérieure (0-20 cm) du sol ont été estimées au bout de huit ans.• La perte de masse et la libération de N, P, Ca et Mg provenant des feuilles et des bogues enfouies dans le sol ont été plus rapides que dans le cas de feuilles et bogues placées à la surface du sol. Les bogues se décomposent et libèrent des nutriments plus lentement que les feuilles de la litière. Le système d'absence de labour a conduit à la formation de strates organiques, qui retiennent une grande quantité de N (249,2Kg ha −1 ) et de Ca (215,5 kg ha −1 ). Un tel système de gestion a accru la concentration en C organique et en nutriments dans la strate de la partie supérieure du sol (0-5cm), mais des différences significatives ont été observées seulement pour le Ca échangeable.• Le système sans labour peut accroître l'accumulation de C organique par rapport au système traditionnel à cause de l'accroissement ...

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Section: Litter-mass Loss and Decay Ratessupporting

confidence: 92%

Decomposition of chestnut litterfall and eight-year soil chemical changes under a no-tillage management system in Northern Portugal

Raimundo

Martins

Madeira³

2008

Ann. For. Sci.

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“…Such amount was also higher than that usually applied as fertiliser (10-15 kg ha −1 ) at planting in Portuguese eucalyptus plantations [19]. Incorporation of non-woody residues (leaves, bark and twigs) and forest floor litter enhanced N leaching, mostly as N-NO − 3 , by 11.6 kg ha −1 y −1 , accounting for 6.4%, during the experimental period, of the amount of N supplied to lysimeters through those residues.…”

Section: Discussionmentioning

confidence: 75%

“…In the lysimeters, the soil and water transfers are disturbed, the amounts of residues used are two to three times greater than at the harvest of the first rotation of eucalypts plantations [19], and the environmental conditions are modified (e.g., soil water content, absence of root exudates and root uptake). Although experimental conditions have a limited value in assessing the complexity of field situations, they allow gaining insight into the capability of harvest residues to decrease N leaching.…”

Section: Discussionmentioning

confidence: 99%

“…Two experimental trials were installed in Portugal to assess the effects of organic residues (harvest residues and forest floor litter) management on tree nutrition status and growth, N in soil solutions and soil fertility [9,19]. In contrast to results reported by Powers et al [30], Nzila et al, [25], Turner and Gessel [37], and Proe and Dutch [31], which showed that organic residues can have positive effects on tree growth, Portuguese trials showed that the removal of those residues, as compared with its maintenance on the soil surface or its incorporation into the soil, did not affect either tree nutrition and productivity, or mineral N availability [21].…”

Section: Introductionmentioning

confidence: 99%

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Étude lysimétrique des effets de la gestion des rémanents d’exploitation sur la lixiviation et la minéralisation d’azote

Gómez-Rey¹,

Vasconcelos²,

Madeira³

2007

Ann. For. Sci.

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-The effects of woody residues from Eucalyptus globulus Labill. plantations on N losses were assessed through a lysimetric experiment. Treatments were: (NW) forest floor litter and non-woody residues (leaves, bark, twigs) incorporated into the soil; (IP) as NW plus woody residues (branches) cut in 20-cm long pieces and incorporated into the soil; (IC) as IP, but with branches chopped into chips; (SP) non-woody and woody residues (pieces) placed on the soil surface; (SC) as SP plus branches chopped into chips; and (CT) absence of organic residues. Leaching of N-NO − 3 and N-NH + 4 was followed during a six-year period and N mineralization was evaluated at the end of the experiment. Non-woody residues enhanced N leaching as compared with the control. Conversely, woody residues decreased N losses. Although differences between treatments were not significant at the end of the experiment, incorporation and fragmentation of woody residues resulted in the more favourable management option regarding the reduction of N leaching observed at short-term. As high amounts of residues were used, the effect observed on decrease N leaching could be higher than that existing in Portuguese eucalypt plantations. a été suivie pendant 6 années, et la minéralisation d'azote a été mesurée à la fin de l'expérience. L'apport de restitutions non ligneuses augmente la lixiviation par rapport au témoin (CT) ; inversement les restitutions ligneuses on diminué les pertes d'azote. Bien que les différences inter traitement ne soient pas significatives à la fin de l'expérience, l'incorporation et la fragmentation de résidus ligneux paraissent une option plus favorable vis à vis de la réduction de la lixiviation de nitrate. Comme nous avons pratiqué des apports très élevés vis à vis de la situation courante des forêts d'eucalyptus au Portugal, la réduction des pertes par l'incorporation de résidu ligneux a pu être artificiellement augmentée.restitutions ligneuses / minéralisation de N / Eucalyptus globulus / lixiviation de N / qualité des restitutions

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“…At present, the risk of fires is expected to increase due to the predicted temperature increase and decrease of spring rainfall in the context of global climate changes in Southern Europe (IPCC, 2007). To reduce fire risks, the removal of the litter layer and understory vegetation is being recommended in the country, in spite of the awareness that litter removal can be responsible for the yield decline in several forest species, such as Picea sitchensis (Proe et al, 1994) and Eucalyptus globulus (Jones et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Influence of litter layer removal on the soil thermal regime of a pine forest in a mediterranean climate

Andrade

Abreu

Madeira

2010

Rev. Bras. Ciênc. Solo

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SUMMARYThe removal of the litter layer in Portuguese pine forests would reduce fire hazard, but on the other hand this practice would influence the thermal regime of the soil, hence affecting soil biological activity, litter decomposition and nutrient dynamics. Temperature profiles of a sandy soil (Haplic Podzol) under a pine forest were measured with thermocouples at depths to 16 cm, with and without litter layer. The litter layer acted as a thermal insulator, reducing the amplitude of the periodic temperature variation in the mineral soil underneath and increasing damping depths, particularly at low soil water contents. At the mineral soil surface the reduction of amplitudes was about 2.5 ºC in the annual cycle and 5 to 6.7 ºC in the daily cycle, depending on the soil water content. When soil was both cold and wet, mean daily soil temperatures were higher (about 1 -1.5 ºC) under the litter layer. Improved soil thermal conditions under the litter layer recommend its retention as a forest management practice to follow in general.Index terms: soil temperature, Fourier series, damping depth.(1) Received for publication in May 2010 and approved in July 2010.

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The effect of organic-matter management on the productivity of Eucalyptus globulus stands in Spain and Portugal: tree growth and harvest residue decomposition in relation to site and treatment

Cited by 74 publications

References 19 publications

Decomposition of chestnut litterfall and eight-year soil chemical changes under a no-tillage management system in Northern Portugal

Decomposition of chestnut litterfall and eight-year soil chemical changes under a no-tillage management system in Northern Portugal

Étude lysimétrique des effets de la gestion des rémanents d’exploitation sur la lixiviation et la minéralisation d’azote

Influence of litter layer removal on the soil thermal regime of a pine forest in a mediterranean climate

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