Practical applications of thermogravimetry in soil science Part 3: I interrelations between soil components and unifying principles of pedogenesis
Practical applications of thermogravimetry in soil science Part 3: I interrelations between soil components and unifying principles of pedogenesis
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DOI：
10.1007/s10973-014-4256-7
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发表时间：
2015-04-01
影响因子：
4.4
通讯作者：
Kucerik, Jiri
中科院分区：
文献类型：
--
作者：
Siewert, Christian;Kucerik, Jiri
分析方法和计算机建模的最新进展显着增加了有关土壤组成，过程和功能的知识。然而，土壤过程的复杂性阻碍了全球适用的预测模型的发展，这限制了不同土地利用下土壤的实际评估。这项工作的重点是通过分析来自不同气候区域、母质和土地利用的样品，确定区域特定和一般土壤性质，以了解全球土壤过程和功能。热重法被用作主要方法，因为它能够分析整个土壤样品，包括结合水，而不需要提取或分馏土壤成分。一种新开发的方法，适用于相互比较的热质量损失，并寻找土壤成分之间的关系，这被假定为在土壤形成过程中建立的通用调节过程的后果。结果表明，土壤水分结合力与土壤有机质和无机质组分之间存在区域性特征。作为所有土壤的一个共同特征，热质量损失之间的关系被发现，这可以解释为粘土对水结合，蛋白质材料的积累，和有机粘土复合物的量的影响。此外，所应用的方法支持在个别样品中的通用土壤形成过程的检测，是有前途的方法，以区分成壤起源的有机碳从碳的其他来源，如木炭或灰分。虽然，这些相互关系的基本因素还没有完全了解，热重分析似乎是一个有用的工具，不仅简单的筛选土壤性质，但也为模拟底层土壤形成过程。
Recent progress in analytical methodology and computer modeling has significantly increased the knowledge about soil composition, processes, and functions. However, the complexity of soil processes hampers the development of globally applicable predictive models, which limits the practical assessment of soils under different land uses. This work focused on the identification of regional specific and generic soil properties toward the understanding global soil processes and functions by analyzing samples from contrasting climatic regions, parent materials, and land uses. Thermogravimetry was used as a primary method due to its ability to analyze whole soil samples including bound water and without the need for extraction or fractionation of soil components. A newly developed method was applied for mutual comparison of thermal mass losses and to search for relationships between soil components, which were assumed to be consequences of generic regulation processes established during soil formation. The results suggest the presence of soil regional-specific characteristics mainly between water binding and soil organic and inorganic matter components. As a common feature for all soils, a relationship between thermal mass losses was found, which can be explained as the influence of clay on water binding, accumulation of proteinaceous materials, and amount of organo-clay complexes. In addition, the applied approach supports the detection of generic soil forming processes in individual samples and is promising method to distinguish between organic carbon of pedogenetic origin from carbon of other sources such as charcoal or ash. Although, the underlying factors of these interrelations are not fully understood, thermogravimetry seems to be a helpful tool not only for simple screening of soil properties, but also for modeling underlying soil forming processes.