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<p>Climate change and the rise in global average temperatures lead to an increase in the frequency, intensity, and magnitude of forest fires. The aim of this study was to estimate the impact of heating temperature on soil organic carbon content (SOC), pH(H<sub>2</sub>O), persistence of soil water repellency (SWR) quantified by the water drop penetration time (WDPT), and the severity of SWR quantified by the contact angle (CA) of acid sandy soils from pine and birch forests near Sekule village in the Borská nížina lowland (southwestern Slovakia). It was found that the higher initial SOC content of birch forest soil resulted in the higher SOC for almost all the heating temperatures. The higher initial pH of pine forest soil resulted in the higher pH for all the heating temperatures. The higher initial WDPT of pine forest soil resulted in the higher WDPT for all but three (200, 250, and 300&#xa0;°C) heating temperatures. Although the initial CA values ​​were not significantly different, heating resulted in a higher CA in the birch forest soil in comparison with the pine forest soil for all the heating temperatures. After heating the soil to 800–900&#xa0;°C, the residual SOC content in the birch forest soil resulted in a rather high CA, which has not been observed so far. The present investigation evidenced the susceptibility of acid sandy soils towards thermal alterations, when differences in post-heating soil properties are primarily due to the differences in vegetation.</p>

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Impact of heating on properties of sandy soil under pine and birch trees

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月3日

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  • Ľubomír Lichner,
  • Peter Šurda,
  • Anton Zvala,
  • Jozef Kollár,
  • Vladimír Šimanský

摘要

Climate change and the rise in global average temperatures lead to an increase in the frequency, intensity, and magnitude of forest fires. The aim of this study was to estimate the impact of heating temperature on soil organic carbon content (SOC), pH(H2O), persistence of soil water repellency (SWR) quantified by the water drop penetration time (WDPT), and the severity of SWR quantified by the contact angle (CA) of acid sandy soils from pine and birch forests near Sekule village in the Borská nížina lowland (southwestern Slovakia). It was found that the higher initial SOC content of birch forest soil resulted in the higher SOC for almost all the heating temperatures. The higher initial pH of pine forest soil resulted in the higher pH for all the heating temperatures. The higher initial WDPT of pine forest soil resulted in the higher WDPT for all but three (200, 250, and 300 °C) heating temperatures. Although the initial CA values ​​were not significantly different, heating resulted in a higher CA in the birch forest soil in comparison with the pine forest soil for all the heating temperatures. After heating the soil to 800–900 °C, the residual SOC content in the birch forest soil resulted in a rather high CA, which has not been observed so far. The present investigation evidenced the susceptibility of acid sandy soils towards thermal alterations, when differences in post-heating soil properties are primarily due to the differences in vegetation.