Modelamiento del crecimiento de bosques nativos de Nothofagus obliqua en un gradiente de sitios de la región del Biobío usando el modelo de crecimiento 3-PG.
Loading...
Date
2025
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
El presente estudio analizó el crecimiento de bosques nativos de Nothofagus obliqua (Mirbel) Oersted var. OBLIQUA en la región centro-sur de Chile, utilizando el modelo de crecimiento 3PG para evaluar su aplicabilidad en la predicción de dinámicas de desarrollo forestal en distintos ambientes. El propósito fue comprender cómo factores climáticos, edáficos y ecológicos influyen en el crecimiento de Nothofagus obliqua en diferentes contextos ambientales. Los métodos incluyeron la recopilación de datos sobre fertilidad del suelo, temperaturas, precipitaciones y características estructurales del dosel forestal, los cuales fueron integrados en el modelo 3PG para simular patrones de crecimiento en tres sitios con condiciones contrastantes. Los resultados mostraron que los sitios con mayor precipitación y suelos de mejor calidad presentaron un crecimiento más acelerado en términos de altura y diámetro, mientras que los sitios con condiciones más adversas exhibieron un desarrollo más lento, evidenciando limitaciones por estrés hídrico y bajas temperaturas. Además, se identificaron diferencias significativas en la productividad neta primaria y la acumulación de biomasa entre los sitios estudiados, determinadas por la interacción entre factores climáticos y edáficos. En conclusión, se subraya la importancia de considerar la variabilidad local al desarrollar estrategias de manejo forestal y se resalta el valor del modelo 3PG como herramienta para planificar la gestión sostenible de bosques nativos. Este enfoque proporciona una base científica sólida para orientar políticas de conservación y optimizar la toma de decisiones en escenarios de perturbaciones ambientales extremas.
This study analyzed the growth of native Nothofagus obliqua forests in south central Chile using the 3PG growth model to evaluate its applicability in predicting forest development dynamics across different environments. The objective was to understand how climatic, edaphic, and ecological factors influence the growth of Nothofagus obliqua under varying environmental conditions. The methodology included data collection on soil fertility, temperature, precipitation, and structural characteristics of the forest canopy, which were integrated into the 3PG model to simulate growth patterns in three sites with contrasting conditions. The results showed that sites with higher precipitation and better-quality soils exhibited faster growth in terms of height and diameter, while sites with more adverse conditions experienced slower development, revealing limitations due to water stress and low temperatures. Additionally, significant differences in net primary productivity and biomass accumulation were identified among the studied sites, determined by the interaction between climatic and edaphic factors. In conclusion, this study highlights the importance of considering local variability when developing forest management strategies and underscores the value of the 3PG model as a tool for planning the sustainable management of native forests. This approach provides a solid scientific basis for guiding conservation policies and optimizing decision making in scenarios of extreme environmental disturbances.
This study analyzed the growth of native Nothofagus obliqua forests in south central Chile using the 3PG growth model to evaluate its applicability in predicting forest development dynamics across different environments. The objective was to understand how climatic, edaphic, and ecological factors influence the growth of Nothofagus obliqua under varying environmental conditions. The methodology included data collection on soil fertility, temperature, precipitation, and structural characteristics of the forest canopy, which were integrated into the 3PG model to simulate growth patterns in three sites with contrasting conditions. The results showed that sites with higher precipitation and better-quality soils exhibited faster growth in terms of height and diameter, while sites with more adverse conditions experienced slower development, revealing limitations due to water stress and low temperatures. Additionally, significant differences in net primary productivity and biomass accumulation were identified among the studied sites, determined by the interaction between climatic and edaphic factors. In conclusion, this study highlights the importance of considering local variability when developing forest management strategies and underscores the value of the 3PG model as a tool for planning the sustainable management of native forests. This approach provides a solid scientific basis for guiding conservation policies and optimizing decision making in scenarios of extreme environmental disturbances.
Description
Tesis presentada para optar al título de Ingeniero en Conservación de Recursos Naturales
Keywords
Bosque nativo, Arboles Ecofisiología, Nothofagus Chile