Soil fertility rehabilitation in young Pinus radiata D. Don. plantations from northern Spain after intensive site preparation

Merino, Agustı́n; Edeso, José Miguel

doi:10.1016/s0378-1127(98)00444-7

Cited by 43 publications

(27 citation statements)

References 24 publications

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“…This coincides with other studies in the region [19,30,33], which showed that the growth of these plantations is mainly limited by availability of these elements. In comparison with needles and twigs, the organic horizon had lower concentrations of almost all elements, especially N and K, but had a higher concentration of Ca.…”

Section: Nutrient Store and Export Rates By Harvesting And Thinningsupporting

confidence: 92%

“…Logging residues contain most of the N, S and P accumulated in the tree biomass, whereas stemwood and bark accumulate the highest amounts of K, Ca and Mg. Whole-tree harvesting leads to large losses of some elements, especially P and Ca and to a lesser extent, N and S. In the case of P, the export is much higher than the available amount of this element in the upper mineral soil layer (table II). This may partially explain the lower levels of P, N and S found in the soils and foliage in some plantations in the region where logging residues are removed after clear-cutting [19,20]. Substantially lower losses were produced during thinning or stem-only harvesting.…”

Section: Possible Implications Of Tree Harvesting and Logging Residuementioning

confidence: 99%

“…After clear-felling, highly mechanized operations, including deep soil ploughing and/or removal of logging residues, are often employed to prepare the site for planting. Previous studies have shown that such intensive management practices have a significant effect on soil conservation [10] and lead to a reduction in soil fertility [20], which has consequences for the nutrient status and production of the following rotation [19]. It is thought that these changes may be partially caused by the removal of nutrient-rich residues and by increased decomposition following clear-felling.…”

Section: Introductionmentioning

confidence: 99%

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Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

2001

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-The effects of logging residue management practices on export and dynamics of nutrients were studied in a plantation of Pinus radiata D. Don growing on an infertile soil, in a humid, temperate area of NW Spain. The export of nutrients due to the removal of wood and logging residues during thinning and clear-cutting was evaluated by estimation of nutrient stores in the above-ground biomass and in the soil. Nutrient dynamics in decomposing slash needles and twigs were monitored over one year in a thinned stand and in an adjacent clear-cut area. Comparison of nutrient release in decaying residues with the nutrient store in tree biomass as well as inputs via litterfall and atmosphere allowed discussion of possible implications for sustainable sylviculture in these plantations. Nutrient release from decomposing material increased following clear-cutting and to an even greater extent, after mechanical incorporation of logging residues to the mineral soil, which substantially increased the short-term flush of some nutrients. logging residues / decomposition / tree harvesting / thinning / forest nutrient cycling Résumé -Effets des pratiques forestières sur la nutrition d'un peuplement de Pinus radiata : exportation des éléments minéraux et dynamique des résidus en décomposition. Les effets de l'utilisation des résidus d'exploitations forestières sur l'exportation et la dynamique des éléments minéraux ont été étudiés dans une plantation de Pinus radiata D. Don située sur une station non fertile et dans une région humide et tempérée du Nord-Ouest de l'Espagne. Le flux d'éléments minéraux dû à l'exportation du bois et des résidus de l'exploitation forestière à la suite d'une éclaircie et d'une coupe rase a été évalué à partir de l'estimation des réserves d'éléments minéraux dans la biomasse aérienne forestière et dans le sol. La dynamique des éléments minéraux provenant des résidus en décomposition d'aiguilles et de brindilles a été suivi pendant un an dans une parcelle éclaircie et aussi dans une zone de déboisement adjacente. La comparaison de la libération d'éléments minéraux en décomposition avec la réserve d'éléments minéraux dans la biomasse des arbres, de même que les apports par les pluviolessivats et les pluies incidentes nous ont permis de discuter des implications possibles pour assurer la pérennité de la production forestière. La libération des éléments minéraux à partir de matières en décomposition augmente après le défrichement total, et ceci tout particulièrement après l'incorporation mécanique des résidus d'exploitations forestières au sol minéral, laquelle augmente de façon appréciable la libération d'éléments minéraux. résidus d'exploitation forestière / décomposition / récolte / éclaircissement / dynamique des éléments minéraux Ann. For. Sci. 58 (2001) [411][412][413][414][415][416][417][418][419][420][421][422] 411

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Section: Nutrient Store and Export Rates By Harvesting And Thinningsupporting

confidence: 92%

Section: Possible Implications Of Tree Harvesting and Logging Residuementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

2001

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“…Louw (1991) observed that in radiata pine stands in South Africa, the foliar nutrient concentration and the volume of soil available for roots were highly correlated, as was site index. Other studies in young plantations have revealed nutrient deficiencies (especially K), which were attributed to fixation of elements by clay minerals, and low foliar levels of P, Ca and/or Mg as important factors limiting growth (Merino and Edeso, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…In Galicia nutrient deficiencies have been diagnosed in young plantations (Zas, 2003;Zas and Serrada, 2003), and the impact of soil preparation techniques have been related to the fertility and the nutritional status of repopulated stands (Merino and Edeso, 1999). In each of these studies, physical and chemical characteristics of the soil were considered to be the most important factors determining the productivity of the species.…”

Section: Introductionmentioning

confidence: 99%

Relationship among soil parameters, tree nutrition and site index of Pinus radiata D. Don in Asturias, NW Spain

Afif-Khouri¹,

Obregón²,

Prendes³

et al. 2010

For. syst.

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The relationships among soil parameters, tree nutrition and site index were examined in Pinus radiata D. Don stands in a climatically homogeneous area of NW Spain. Thirty-eight even-aged stands, ranging from 10 to 54 years, were sampled. In each stand, a representative plot of 0.1 ha was selected and different stand variables and parent material were considered. The soils in the study area are strongly acidic, with high proportions of organic matter, high C/N ratios, and low exchangeable base cation and available P concentration extracted by Mehlich 3 method (PM3). Although foliar N was sufficient in every stand studied, widespread deficiencies of K, P and, to a lesser extent, Mg and Ca were diagnosed. The foliar concentrations of P were positively correlated with PM3 and effective cation exchange capacity. The SI values ranged between 9.5 and 28.8 m and were positively correlated with foliar P and extractable K in soil. In the stands developed on quartzite and sandstone lithologies, the SI was negatively correlated with slope and foliar N respectively. The results suggest the importance of site selection and fertilizer treatment in reforestation programmes.Key words: age-height relationship, needle analysis, Pinus insignis, soil analysis. Resumen Influencia de los factores edáficos en el índice de sitio y estado nutricional de Pinus radiata D. Don en Asturias, noroeste de EspañaSe estudia en 38 parcelas de 0,1 ha cada una las propiedades del suelo que más influyen en el índice de sitio (IS) de plantaciones de Pinus radiata D. Don de 10 a 54 años de edad y en su estado nutricional en Asturias, considerando diferentes variables de masa y distinto material parental. Los suelos estudiados presentaron un carácter fuertemente ácido, alto contenido de materia orgánica, relación C/N elevada, bajo contenido en bases y P disponible extraído por el método de Mehlich 3 (PM3). Las deficiencias más extendidas fueron en K y P, observándose en algunas parcelas deficiencias en Mg y Ca. Sin embargo, las concentraciones en N fueron siempre superiores al nivel crítico. El P foliar se correlacionó positivamente con la capacidad de intercambio catiónico efectiva y con PM3. El IS osciló entre 9,5 y 28,8 m y estuvo positivamente correlacionado con la concentración de P en acículas y con el K intercambiable en el suelo en todas las parcelas y negativamente con la pendiente y el N foliar en las parcelas desarrolladas sobre cuarcitas y areniscas respectivamente. Los resultados revelan la importancia de la elección del sitio y la necesidad de fertilización en los programas de reforestación.Palabras clave: análisis de acículas, análisis de suelo, pino insigne, relación altura-edad.

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Forest Soils

and¹,

Weston²

The Forests Handbook, Volume 1

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Soil fertility rehabilitation in young Pinus radiata D. Don. plantations from northern Spain after intensive site preparation

Cited by 43 publications

References 24 publications

Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in decomposing logging residues

Relationship among soil parameters, tree nutrition and site index of Pinus radiata D. Don in Asturias, NW Spain

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