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Descripción
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| The role of fire as agent of landscape modelling is converting in a serious trouble in recent times, and it is studying from many points of view. We are focused on the effects of soil heating on soil quality, and also we made an estimate of CO2 emissions based on the soil organic matter (SOM) content that was combusted. The aim of this study was to investigate how the quality of the soil is affected by heating under different conditions. The experimental factors were: (i) the heating temperature (ii) the initial soil moisture and (iii) the type of soil on which the fire occurs. The quality chemical properties selected for analysis were: pH, electrical conductivity (EC) and SOM; the quality physic properties selected were: aggregate stability and soil hydrophobicity. The germination of seeds was also selected as biological property. The study was carrying out with an Ultisol from southwester Spain (Cañamero, Cáceres). The sampling stations were two soils with different cover vegetation; Quercus suber L. and Cistus ladanifer. The most important factor on post-fire soil quality was found to be the temperature reached. In the case of fire of high intensity (Tº = 405ºC during 7 min) most of the 90% of SOM content in soil samples (0-5 cm depth) were combusted if soils were dry before the heating. Moisture seems to be involved at the time of the initial ignition and with the highest tested moisture (20%) the SOM content was only affected by fire of the high intensity. | |
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Internacional
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Si |
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Nombre congreso
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4Th International Congress EUROSOIL 2012 |
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Tipo de participación
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960 |
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Lugar del congreso
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Bari, Italia |
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Revisores
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Si |
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ISBN o ISSN
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99-9999-999-9 |
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DOI
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Fecha inicio congreso
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02/07/2012 |
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Fecha fin congreso
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06/07/2012 |
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Desde la página
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1115 |
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Hasta la página
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1115 |
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Título de las actas
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Libro de resúmenes del 4Th International Congress EUROSOIL 2012 |