A Comparison of Planting and Natural Succession After a Forest Fire in the Northern Sierra Nevada

1978 ◽  
Vol 15 (2) ◽  
pp. 597 ◽  
Author(s):  
Jane H. Bock ◽  
Martin Raphael ◽  
Carl E. Bock
Keyword(s):  
Sierra Nevada ◽  
Forest Fire ◽  
Natural Succession

Numerical simulation of the tree higro-thermal response in forest fire environment

2020 ◽  
pp. 57-65
Author(s):  
Eusébio Conceiçã ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Jorge Raposo ◽  
Domingos Xavier Viegas ◽  
...  
Keyword(s):  
Forest Fire ◽  
Numerical Study ◽  
Thermal Response ◽  
View Factor ◽  
Tree Model ◽  
Pine Tree ◽  
Surface Temperatures ◽  
Fire Environment ◽  
Fire Front ◽  
Heat Exchanges

This paper refers to a numerical study of the hypo-thermal behaviour of a pine tree in a forest fire environment. The pine tree thermal response numerical model is based on energy balance integral equations for the tree elements and mass balance integral equation for the water in the tree. The simulation performed considers the heat conduction through the tree elements, heat exchanges by convection between the external tree surfaces and the environment, heat exchanges by radiation between the flame and the external tree surfaces and water heat loss by evaporation from the tree to the environment. The virtual three-dimensional tree model has a height of 7.5 m and is constituted by 8863 cylindrical elements representative of its trunks, branches and leaves. The fire front has 10 m long and a 2 m high. The study was conducted taking into account that the pine tree is located 5, 10 or 15 m from the fire front. For these three analyzed distances, the numerical results obtained regarding to the distribution of the view factors, mean radiant temperature and surface temperatures of the pine tree are presented. As main conclusion, it can be stated that the values of the view factor, MRT and surface temperatures of the pine tree decrease with increasing distance from the pine tree in front of fire.

Geología de la transecta 8: El Palmar-cerro Corea. Sierra Nevada de Santa Marta

2008 ◽  
pp. 25-40
Author(s):  
Elizabeth Cortés Castillo ◽  
Julián Andrés López Isaza
Keyword(s):  
Sierra Nevada

Variedades de durazno (Prunus persica L.) intercaladas en el sistema milpa en la sierra nevada de Puebla, México

2019 ◽  
Vol 12 (9) ◽  
Author(s):  
Ernesto Hernández-Romero ◽  
Reyna Rojano-Hernández ◽  
Ricardo Mendoza-Robles ◽  
José. I. Cortés- Flores ◽  
Antonio N. Turrent-Fernández
Keyword(s):  
Sierra Nevada ◽  
Prunus Persica ◽  
El Sistema

En la Sierra Nevada de Puebla, México, los huertos de durazno (Prunus persica L.) presentan problemas de producción relacionados con alta incidencia de plagas (incluye enfermedades), nutrición deficiente e inadecuado manejo de poda, que acentúan el problema de floración precoz en la mayoría de las variedades mejoradas.

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