Curvas preliminares de índice de sitio para bosques puros y mixtos de Nothofagus alpina y Nothofagus obliqua en la Patagonia Argentina

Beltrán, Hernán Attis; Chauchard, Luis; Pastur, Guillermo Martínez

doi:10.4067/s0717-92002015000200013

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…Al respecto, Hirigoyen et al (2018) seleccionaron un modelo ADA anamórfico por presentar bondad de ajuste superior y comportamiento gráfico adecuado en la modelación del área basal para Eucalyptus globulus L.; mientras que Vargas et al (2017), indicaron que una ecuación ADA anamórfica modeló de forma adecuada el crecimiento en diámetro de diversos bosques templados y tropicales de México. También se sabe que las ecuaciones anamórficas han demostrado buena aptitud para expresar patrones de crecimiento variables para especies forestales en bosques con ritmos de crecimiento variable (Attis et al 2015, Pacheco et al 2016, lo que concuerda con este estudio.…”

Section: Discussionunclassified

Ecuaciones de índice de diámetro para plantaciones comerciales de Pinus pseudostrobus Lindley en Michoacán, México

García-Espinoza

Quiñonez-Barraza²,

Calderón³

et al. 2023

Ecosist. Recur. Agropec.

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Las plantaciones forestales comerciales contribuyen al incremento de la producción maderable en bosques con manejo forestal en el estado de Michoacán, México; sin embargo, no se considera el uso de ecuaciones que permitan predecir, de manera eficiente, la dinámica de crecimiento en diámetro, lo cual es imprescindible para la planeación y evaluación de labores silvícolas. El objetivo fue ajustar y comparar ecuaciones en diferencia algebraica (DA) para la elaboración de curvas de crecimiento e incremento en diámetro e índice de diámetro para plantaciones comerciales de Pinus pseudostrobus en Michoacán, México. La base de datos utilizada proviene de análisis troncales de 41 árboles y para la generación de las curvas de crecimiento, se consideró como índice de diámetro al diámetro medio que alcanzan las plantaciones a la edad de referencia de 20 años. Las ecuaciones de Korf, Levakovic ll, Monomolecular y Weibull presentaron alta precisión de acuerdo con los estadísticos de ajuste; pero la mayor precisión se obtuvo con la ecuación anamórfica de Korf, la cual generó curvas que describieron adecuadamente el patrón de crecimiento en diámetro y sugirió que el punto de crecimiento máximo sucede a los seis años. Las ecuaciones de índice de diámetro son herramientas que permiten describir de forma adecuada el patrón de crecimiento, además, son útiles para estimar el punto de crecimiento máximo; esta información servirá de apoyo para conducir a las plantaciones de P. pseudostrobus a mayor rendimiento maderable.

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Section: Discussionunclassified

Ecuaciones de índice de diámetro para plantaciones comerciales de Pinus pseudostrobus Lindley en Michoacán, México

García-Espinoza

Quiñonez-Barraza²,

Calderón³

et al. 2023

Ecosist. Recur. Agropec.

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“…N. alpina shows similar growth patterns in height with N. obliqua, and in diameter with N. dombeyi (Attis Beltrán et al , 2016Beltrán et al , 2018. Based on simulations, in the most productive sites, at the age of 100 years, N. dombeyi and N. alpina reach 40-50 m in height, while N. obliqua 35-40 m (Carrizo 2001;Attis Beltrán et al 2015). On average, the mixed Nothofagus forests show volume increments of 7.4 m 3 ha -1 yr -1 (González Peñalba et al 2010).…”

Section: Structure and Dynamicsmentioning

confidence: 96%

Silviculture of South American temperate native forests

Donoso

Promis

Loguercio

et al. 2022

NZJFS

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Background: South America has the largest area of temperate forests in the Southern Hemisphere, which grow in diverse site conditions. The aim of this paper is to review the practices of silviculture applied and recommended for these temperate forests, and to discuss prospects to develop new silvicultural proposals to improve sustainability, adaptation and in-situ conservation of forest ecosystems. Methods: We reviewed the silviculture knowledge in four major forest types: 1) The Nothofagus-dominated forests of south-central Chile; 2) the Angiosperm-dominated evergreen forests; 3) the Nothofagus and Austrocedrus chilensis (D.Don) Pic. Serm. & Bizzarri forests in the Argentinean Northern Patagonia; and 4) the Cool temperate Nothofagus forests and Magellanic rainforests. Results: In Chile, both Nothofagus-dominated and Angiosperm-dominated evergreen forests are diverse in tree species, and mixed-species silviculture with commercially valuable species of variable shade tolerance is most promising. Some secondary forests can reach growth rates as high as 20 m3ha-1yr-1. After thinnings, stands with 35–60% of residual densities have shown the best responses in growth. Even-aged silvicultural methods have shown a rapid reorganization and development of new cohorts, although, where Chusquea species are conspicuous, regeneration establishment requires controlling competing vegetation. Preliminary results also show interesting prospects for single-tree selection cuts in uneven-aged forests. East of the Andes, in Argentina, mixed Nothofagus forests and pure and mixed Nothofagus and A. chilensis forests occur. The shelterwood method has been the most practised and successful in the mixed Nothofagus forests, with abundant regeneration, and good growth rates. For A. chilensis forests, an adaptive management approach is proposed, conditioned by the cypress disease attack (e.g., Phytophthora austrocedri). Conversion of pure A. chilensis to mixed A. chilensis–N. dombeyi forests could increase growth considerably. Finally, in the cool temperate Nothofagus forests and Magellanic rainforests, shared by Chile and Argentina, the regular shelterwood cuts have been the most common silvicultural method, with massive regeneration a decade after the regeneration felling. Since the two major Nothofagus species in these forests regenerate well in gaps, uneven-aged silviculture seems also promising. Conclusions: There is abundant knowledge about the silviculture of these forest types. However, there are opportunities for several silvicultural systems to better contribute to sustainable forest management, reverse forest degradation, and cope with climate change challenges, primarily through developing mixed and single-species productive and carbon-rich forests, with greater adaptive capacity.

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“…Regarding this point, the L acar basin is located within the Lanín National Park, created in 1937 (Administraci on de Parques Nacionales, 2012), therefore, any human activity related to introduction of exotic species and conversion of forest into farmland is illegal since then. Prior to the creation of the National Park, historical documents report the extensive extraction of Nothofagus alpina and Nothofagus obliqua around the L acar basin due to the high-quality of its wood for building (Attis et al, 2015). Moreover, several sawmills were present in the area (Secretaría de Turismo y Desarrollo Econ omico, 2021).…”

Section: Late Holocene (4200 Cal Yr Bp To Present)mentioning

confidence: 99%

“…Hitherto, the investigations have focussed on aspects such as genetic characterization and phylogeography (Acosta and Premoli, 2010;Azpilicueta et al, 2009;Marchelli et al, 1998Marchelli et al, , 2007Paredes, 2003;Vergara, 2011;Vergara et al, 2013), as well as hybridization between the species (Azpilicueta et al, 2016;Donoso et al, 1990;Marchelli and Gallo, 2004). Studies also examined the spatial growth patterns (Donoso, 1988;Donoso et al, 1993;Echeverría and Lara, 2004;Puntieri et al, 2006;Sabatier et al, 2011) and site index models to quantify the productivity of a determined area with silvicultural purposes (Attis et al, 2015;Trincado et al, 2002). Unfortunately, few palynological records show the Nothofagus obliqua pollen type, which comprises pollen grains from N. obliqua and N. alpina ( Alvarez-Barra et al, 2020;Markgraf et al, 2009;Nanavati et al, 2020), and yet, little is reported on their Holocene history within their distribution range in northern Patagonian Argentina.…”

Section: Introductionmentioning

confidence: 99%

Holocene changes in forest composition in northern Patagonia responded to climate with little impact of disturbance

Álvarez-Barra

Giesecke

Fontana

2022

Quaternary Science Reviews

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Curvas preliminares de índice de sitio para bosques puros y mixtos de Nothofagus alpina y Nothofagus obliqua en la Patagonia Argentina

Cited by 8 publications

References 8 publications

Ecuaciones de índice de diámetro para plantaciones comerciales de Pinus pseudostrobus Lindley en Michoacán, México

Ecuaciones de índice de diámetro para plantaciones comerciales de Pinus pseudostrobus Lindley en Michoacán, México

Silviculture of South American temperate native forests

Holocene changes in forest composition in northern Patagonia responded to climate with little impact of disturbance

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