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首页> 外文期刊>Applied Magnetic Resonance >Application of EPR Spectroscopy in Studies of Soils from Destroyed Forests
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Application of EPR Spectroscopy in Studies of Soils from Destroyed Forests

机译：EPR光谱在毁灭森林土壤中的应用

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摘要

The presented results show that significant changes have taken place in the structure of the humic acids in the soils affected by forest destruction. Regardless of the cause of forest removal: clear-cutting, a wildfire or a windstorm, its effect on soil humic acids was the same. The elemental analysis and the spectroscopic data (UV-Vis, EPR) indicate a higher content of aliphatic moieties and hence a lower degree of humification (higher parameter g of the radicals) of the organic matter extracted from the affected plots in comparison with the reference ones. Due to the slowing down of the humification processes, the soil organic matter extracted from the spruce forest on the disturbed plots is not as stable as the one taken from the reference plots. The results prove that semiquinone radicals present in humic acids are suitable indicators for tracking changes in the humified matter in the organic and mineral layers of forest soil under different management regimes in disturbed areas. Principally, the EPR method is an appropriate instrument which, through the detailed quantitative and qualitative determination of semiquinone radicals, makes it possible to track changes in the inner chemical structure of humic acids.
机译：所提出的结果表明，受森林破坏影响的土壤中腐殖酸的结构发生了重大变化。无论森林拆卸原因如何：透明切割，野火或风暴，它对土壤腐殖酸的影响是一样的。元素分析和光谱数据（UV-VI，EPR）表示脂肪族部分的含量较高，因此与参考文献相比，从受影响的地块提取的有机物质的有机物的较低程度的湿度（较高参数G的基团）那些。由于湿度处理的减慢，从云杉林上提取的土壤有机物在干扰的图中不如从参考图中取代的那样稳定。结果证明，腐殖酸中存在的半醌自由基是用于在扰动区域的不同管理方案下森林土壤有机和矿物层中有机和矿物层中富含物质的变化的合适指标。主要是，EPR方法是一种适当的仪器，通过详细的定量和定性测定半醌自由基，可以追踪腐殖酸内部化学结构的变化。

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