A new approach to defining rotation ages on the basis of productive and technological aspects. Application to natural Pinus sylvestris L. stands in Central Spain
Autor: | José Javier Corral-Rivas, Alberto Rojo-Alboreca, Ricardo Alía, Gregorio Montero, Juan Daniel García-Villabrille |
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Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Agroforestal |
Rok vydání: | 2017 |
Předmět: |
Index (economics)
yield tables Yield (finance) medicine.medical_treatment Price index Soil Science Distribution (economics) veneer timber Site index Veneer timber 01 natural sciences 010305 fluids & plasmas diameter distributions 0103 physical sciences Statistics medicine price index lcsh:Forestry Scots pine Ecology Evolution Behavior and Systematics Mathematics 010302 applied physics biology Thinning business.industry Forestry biology.organism_classification Yield tables lcsh:SD1-669.5 Veneer business Diameter distributions |
Zdroj: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname Forest Systems, Vol 26, Iss 2, Pp e03-e03 (2017) Repositorio de Resultados de Investigación del INIA Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA INIA: Repositorio de Resultados de Investigación del INIA Forest Systems; Vol 26, No 2 (2017); e03S |
ISSN: | 2171-9845 |
Popis: | Aim of study: To propose a new approach to defining rotation ages on the basis of productive and technological aspects and to present an example of application of the methodology to natural Pinus sylvestris stands in relation to silvicultural treatment (light or heavy thinning) and site index. Area of study: Central Spain. Material and methods: We assumed that the price per m3 of logwood suitable for veneer is four times higher than logwood not apt for veneer. Considering the yield distribution for different technological and commercial classes, a model of diameter distributions and yield tables, the variation in an average price index for different age classes, site indexes and silvicultural treatments was calculated. The age at which the price index rises by less than 3%, the proportion of trees with d.b.h. higher than 40 cm, and other aspects such as the possible presence of fungal decay in old-growth stands were also taken into account to establish three criteria for defining rotation ages. Main results: The proposed methodology generates a wide range of rotation ages between 100 and 140 years for lightly thinned stands, and between 90 and 140 years for heavily thinned stands, depending on the site index. Research highlights: The proposed approach is based on technological and productive criteria, with the limitations imposed by sanitary risks. The methodology can be applied to generate rotation ages in relation to different site indexes and silvicultural treatments, provided that the timber market prices and the yield distribution for different technological and commercial classes are known, and that a model of diameter distributions and yield tables are available. SI |
Databáze: | OpenAIRE |
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