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vol.14 número1Characterization of soil properties of Nothofagus spp. forest with and without scarification in the Andean region of Southern ChileEvaluation of chañar seed cake from biodiesel production as a soil amendment índice de autoresíndice de materiabúsqueda de artículos
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Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516


REYES, J; THIERS, O; GERDING, V  y  DONOSO, P. Effect of scarification on soil change and establishment of and artificial forest regeneration under Nothofagus spp. in Southern Chile. J. Soil Sci. Plant Nutr. [online]. 2014, vol.14, n.1, pp.115-127.  Epub 19-Ene-2014. ISSN 0718-9516.

Soil scarification has been used as a silvicultura  method to facilitate the regeneration of some forests, but it may have a negative impact on the properties of the soil. We evaluated the effect of a mechanized scarification on a volcanic soil after a shelterwood cutting in a Nothofagus spp. forest, located in the Andean region of southern Chile (39° 54 'S, 71° 56' 5 W, 970 m asl). A plantation of Nothofagus nervosa was established after scarification, and its physical (moisture content, bulk density, penetration resistance) and chemical (pH, organic matter, macro and microelements; saturation Al) soil properties were analyzed in scarified gaps and undisturbed forest. The size of N. nervosa planted trees was measured eleven months after their establishment (June 2010). The volumetric water content of the soil was similar with and without scarification (30-50%), regardless of the time of year. The bulk density was higher in the scarified soil when compared to the undisturbed forest. The soil nutrient supply in the gaps (0-20 cm) decreased when compared to the undisturbed forest (0-10 cm), but showed little difference between gaps and between locations within them. The N. nervosa plantation developed properly, with similar growth in gaps of different size. Scarification decreased soil quality; the effects on regeneration will need further evaluation throughout a longer period.

Palabras clave : Silviculture; soil scarification; physical and chemical soil properties; Nothofagus forests.

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