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Author:
Date:
2021-01-20
[Abstract] Researchers face a number of challenges in the construction of soil columns which can affect the outcome of their experiments. The use of intact soil cores closely mimics actual field conditions. However, the excavation of large intact soil cores is a time-consuming, labor-intensive process and may lead to soil compaction that would influence the solute transport behavior of the soil column. Repacked soil columns are used as an option to circumvent these challenges of intact soil cores. However, repacked soil columns also have their limitations and introduce other challenges. Here, we present a step by step procedure for the design of repacked soil columns to achieve a realistic bulk density, prevent preferential flow paths, and ensure hydraulic connectivity between soil layers. This ...
[摘要] [摘要]研究人员在建造土柱时面临许多挑战，这些挑战可能会影响他们的实验结果。完整土壤的使用非常类似于实际田间条件。然而，大型完整土心的开挖是一个耗时，劳动密集的过程，并且可能导致土壤压实，这将影响土壤柱的溶质运移行为。重新包装的土柱作为一个选项，以规避了自身完整的土样的挑战。但是，重新包装的土壤柱也有它们的局限性，并带来其他挑战。在这里，我们提出了重新包装的土壤柱设计的分步过程，以实现实际的堆积密度，防止优先流动路径并确保土壤层之间的水力连通性。该协议将是有益的小号油š cientists，ħ ydrologists等Ë环境中的物体小号cientis TS利用重新包装的土壤柱。
[背景]土柱在监测污染物和养分等溶质的命运和流动性的实验设置中起着重要作用。它们还用于评估溶质运移模型。土壤柱被广泛用于养分，农药，微生物和重金属的归宿和运移研究（Lewis和Sjöstrom，2010）。
小号pecifically，土壤列已在几项研究中，包括药物的浸出使用（Oppel等人，2004），根系生长土壤板结水平的响应（T活泼等人，2012），溶解的有机碳和硝酸盐通量（Eykelbosh等人，2015年），有机微量污染物的归宿（Banzhaf和Hebig ...
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