A Soil-Site Evaluation Index of Productivity in Intensively Managed Pinus Radiata (D. Don) Plantations in South Australia

Hollingsworth, I. D.; Boardman, R.; Fitzpatrick, R. W.

doi:10.1007/978-94-009-1653-1_37

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Soil rootable depth is shown to be an important factor in most studies (Turvey et al. , 1990; Hollingsworth et al. , 1996; Romanyà & Vallejo, 2004), but while a minimum depth of 60 cm has been suggested for optimum growth of Radiata pine in Atlantic areas of Spain (Sánchez‐Rodríguez et al.…”

Section: Discussionmentioning

confidence: 99%

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Land evaluation for forestry: a study of the land requirements for growing Pinus radiata D. Don in the Basque Country, northern Spain

Olarieta

Besga

Rodríguez‐Ochoa

et al. 2006

Soil Use and Management

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Land requirements for the growth of Pinus radiata D. Don were studied in 112 plots by comparing site index (SI) values with land characteristics. The SI at the reference age of 20 years ranged from 10.4 to 32.7 m. The growth of Radiata pine increased as soil rootable depth increased, with a mean depth of about 50 cm in plots with an SI higher than 29 m. The results show that soil physical properties had a major influence on growth rates with soils of a loamy texture resulting in higher rates than clay rich soils. Soil nitrogen and phosphorus availability had significant effects on growth on soils developed on non-volcanic parent material whilst potassium availability was significant in soils on volcanic parent material. There were strong interactions among the land characteristics of each land unit so that the magnitude of the specific effect of a given variable was highly dependent on the values of the others. Results are discussed in relation to land use planning.

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Section: Discussionmentioning

confidence: 99%

“…The influence of land characteristics on the growth of Radiata pine and on plantation management has been studied: for example, in Chile (Francke et al. , 1988), New Zealand (Hunter & Gibson, 1984) and Australia (Hollingsworth et al. , 1996) where a specific ‘Soil Classification for Pinus radiata ’ has been developed (Turvey et al.…”

Section: Introductionmentioning

confidence: 99%

Land evaluation for forestry: a study of the land requirements for growing Pinus radiata D. Don in the Basque Country, northern Spain

Olarieta

Besga

Rodríguez‐Ochoa

et al. 2006

Soil Use and Management

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“…The range of SI values for the studied stands was similar to that reported for another region in northern Spain (Sánchez et al, 2002). The intensively managed radiata pine plantations of south Australia and the reduced water stress of New Zealand plantations have higher site index than the Spanish plantations studied (Hunter and Gibson, 1984;Hollingsworth et al, 1996). Unexpectedly, the lowest productivity of the plantation studied in northern Spain coincided with the area with highest rainfall.…”

Section: Resultsmentioning

confidence: 74%

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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“…These national systems vary across jurisdictions in their specific criteria for defining site types, and in their hierarchy of organization, but in general they share a fundamental focus on depicting the variation in topography, substrate and vegetation characteristics across the landscape at a scale that is appropriate for supporting decisions relevant to forestry, wildlife habitat and other ecological services [66]. These systems have proven useful for capturing site-specific differences in forest growth and yield [67][68][69], and our results suggest that ecological land classification systems may also be useful for examining general patterns in the wood quality properties of trees across the landscape.…”

Section: Discussionmentioning

confidence: 99%

Modeling Wood Fibre Length in Black Spruce (Picea mariana (Mill.) BSP) Based on Ecological Land Classification

Townshend

Pokharel

Groot

et al. 2015

Forests

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Effective planning to optimize the forest value chain requires accurate and detailed information about the resource; however, estimates of the distribution of fibre properties on the landscape are largely unavailable prior to harvest. Our objective was to fit a model of the tree-level average fibre length related to ecosite classification and other forest inventory variables depicted at the landscape scale. A series of black spruce increment cores were collected at breast height from trees in nine different ecosite groups within the boreal forest of northeastern Ontario, and processed using standard techniques for maceration and fibre length measurement. Regression tree analysis and random forests were used to fit hierarchical classification models and find the most important predictor variables for the response variable area-weighted mean stem-level fibre length. Ecosite group was the best predictor in the regression tree. Longer mean fibre-length was associated with more productive ecosites that supported faster growth. The explanatory power of the model of fitted data was good; however, random forests simulations indicated poor generalizability. These results suggest the potential to develop localized models linking wood fibre length in black spruce to landscape-level attributes, and improve the sustainability of forest management by identifying ideal locations to harvest wood that has desirable fibre characteristics.

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A Soil-Site Evaluation Index of Productivity in Intensively Managed Pinus Radiata (D. Don) Plantations in South Australia

Cited by 4 publications

References 8 publications

Land evaluation for forestry: a study of the land requirements for growing Pinus radiata D. Don in the Basque Country, northern Spain

Land evaluation for forestry: a study of the land requirements for growing Pinus radiata D. Don in the Basque Country, northern Spain

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

Modeling Wood Fibre Length in Black Spruce (Picea mariana (Mill.) BSP) Based on Ecological Land Classification

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