SciELO - Scientific Electronic Library Online

 
vol.28 número1Estimación del escurrimiento superficial con el método SCS-CN en el trópico subhúmedo de MéxicoAnálisis multifractal del carbono en los suelos 3: Estimaciones escalantes índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Terra Latinoamericana

versión On-line ISSN 2395-8030versión impresa ISSN 0187-5779

Resumen

CAPULIN GRANDE, Juan; MOHEDANO CABALLERO, Leopoldo  y  RAZO ZARATE, Ramón. Changes in soil and vegetation in a pinus forest affected by fire. Terra Latinoam [online]. 2010, vol.28, n.1, pp.79-87. ISSN 2395-8030.

In Mexico forest fires are frequent disturbances. In 2007 fires affected approximately 10% of the tree and 90% of the grass and shrub vegetation. Forest fires increase availability of some soil nutriments, while others are lost in gaseous form, disturbing the normal dynamics of the vegetation. This work investigated how a natural, surface, moderate forest fire affected soil and vegetation. Five 25 m2 sample plots were set up, three within a burned area and two outside of it, as a control. Compound soil samples were taken 15, 180 365, and 540 days after the fire. Each compound sample comprised four sub samples taken randomly at two soil depths (0-5 and 5-30 cm), resulting in four conditions. Organic matter, organic carbon, pH, total nitrogen, phosphorus, and texture were determined. Vegetation sampling took place 30, 180, and 540 days after fire by a sweep method. Plant species were identified using botanical guides. Soil pH values increased statistically, relative to the control, due to ashes and exchangeable bases. Organic matter, organic carbon and total nitrogen decreased after fire; this was more significant in the top layer (0-5 cm) because of litter accumulation. In contrast, phosphorus increased in this burned layer since fire temperature was not high enough to vaporize it, leading to its storage as ash. The proportion of sand increased, while that of clay decreased in the burned layer. The vegetation study showed increases in species diversity and number of plants in the burned area compared with the control, indicating that the fire created favorable conditions for incoming pioneer plant species which formed a microclimate allowing natural regeneration of the original vegetation.

Palabras llave : nutrimental alteration; forest fire; succession vegetation.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons