Abstract
DOI: 10.15414/afz.2015.18.01.01â05 Received 09. January 2015 Ç Accepted 16. MArch 2015 Ç Available online 31. March 2015 Fire affects many of physical, chemical and biological soil properties directly by the transport of the heat to the soil or indirectly because of the vegetation changes and dynamic of nutrients and organic matter. This impact depends on many factors therefore the aim of this study was to consider the impact of different severity of fire on the changes in quantity and quality of soil organic matter (SOM) and soil structure in sandy dystrict Fluvisol. The samples were taken in the Zbehy district (autumn 2012) from three localities: 1. unburned soil â the control, 2. Higher severity of fire, and 3. Lower severity of fire. The results showed the increase of SOM content due to higher severity of fire; on the other hand, the SOM quality was decreased. The stability of water-stable aggregates was clearly decreased because of higher fire-severity. Overall, our results indicate that the breakdown of soil structure was affected by higher severity of fire. Â Keywords: fire, stability of water-stable aggregates, soil structure
Highlights
The soil is considered as a main part of an environment and as a necessary condition for living
Higher severity of fire (HSF) had a negative effect on quality of soil organic matter (SOM) while on the other hand we observed a positive influence due to lower severity of fire
We evaluated the quality of SOM with regard to the fire-severity as well as by the
Summary
The soil is considered as a main part of an environment and as a necessary condition for living. Soil properties are influenced by the complex of different factors in many ways (Šimanský et al, 2008). It has been widely demonstrated that fire induces changes in SOM and it has been affected mainly by the interval of temperatures reached at different soil depths and intensity of fire (De la Rosa et al, 2012). While lower intensity of prescribed burning is considered to have mainly low or no effect on soil aggregates, soil structure is widely affected during high temperature of fire (Urbanek, 2013). According to Horn and Smucker (2005), soil structure is under influence of constant transformation as a result of changes in soil humidity and temperature. Mataix-Solera et al (2011) claimed that different factors, for instance severity of fire, different soil properties and soil conditions affect the aggregate stability
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