Evaluación de la funcionalidad del suelo en bosques de pinus nigra sometidos a manejo
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2014-07-08
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Jaén: Universidad de Jaén
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[ES]Desde 1894, en el Monte de “Los Palancares y Agregados”, se ha realizado
una intensa explotación maderera que compromete la sostenibilidad de las
masas forestales naturales a largo plazo. El objetivo de este trabajo ha sido
evaluar el efecto de este manejo sobre la funcionalidad del suelo y de cómo
esa funcionalidad determina a su vez el desarrollo de los árboles. Se han
analizado distintas actividades enzimáticas microbiológicas, así como la
disponibilidad de nutrientes en cada uno de los tramos de muestreo. Las zonas
con mayor contenido en materia orgánica presentaban una mayor cantidad de
nutrientes, mayores tasas de respiración y mejor capacidad de retención de
agua. Asimismo, las actividades enzimáticas mostraron valores superiores en
estos tramos de mayor edad. Estos resultados demuestran que la funcionalidad
del suelo se reduce al intensificarse las labores de manejo lo que compromete
la sostenibilidad de la masa forestal a largo plazo.
[EN]Since 1894 intense management activities, mainly focused in wood exploitation based on logging rotations, have been applied in “Los Palancares y Agregados” range. This activities compromise the sustainability of the forest landscape in the long term. The objective of this work has been to evaluate the effects of these management practices on soil functionality and how this determines the development of the forest. We have analyzed several soil enzyme activities as well as soil nutrient availability in the different timber areas. The areas that showed the highest levels of organic matter also had higher nutrient contents, soil respiration rates and water retention capacities. Moreover, the highest levels of soil enzyme activities were also found in these older plots. These results demonstrate that soil functionality can be reduced by increasing land use intensity, compromising the sustainability of the forest in the long term.
[EN]Since 1894 intense management activities, mainly focused in wood exploitation based on logging rotations, have been applied in “Los Palancares y Agregados” range. This activities compromise the sustainability of the forest landscape in the long term. The objective of this work has been to evaluate the effects of these management practices on soil functionality and how this determines the development of the forest. We have analyzed several soil enzyme activities as well as soil nutrient availability in the different timber areas. The areas that showed the highest levels of organic matter also had higher nutrient contents, soil respiration rates and water retention capacities. Moreover, the highest levels of soil enzyme activities were also found in these older plots. These results demonstrate that soil functionality can be reduced by increasing land use intensity, compromising the sustainability of the forest in the long term.