Lamellae occur in Podzols around the world, mostly in illuvial horizons and parent material, while in eluvial horizons they are often absent or very rare. While many studies have been conducted on lamellae origins, there has been little research focused on their transformation in the soil profile, including the disappearance of lamellae in the course of soil formation. Some studies show that the transformation of lamellae toward physical degradation over time occurs frequently. However, there still exists a lack of studies on lamellae transformation in soils occurring in similar environmental conditions, formed from the same parent material, and varying only in terms of type of dominant soil-forming process. The main aims of this study were: (1) to determine the mechanism of lamellae transformation in sandy soils in a moderately humid climate in southern Poland in relation to progressing podzolization and (2) to compare lamellae transformation mechanisms in well-developed sandy soils affected and not affected by podzolization. The obtained results indicate that soil lamellae commonly occur in the sandy soils of southern Poland – and are characterized by very diverse morphology as well as diverse physical and chemical properties. Soil lamellae exhibit a higher content of fine fractions, iron, aluminum and total organic carbon compared with interlamellae. Soil lamellae are affected by different mechanisms of transformation that depend on their position in the soil profile, predominant soil-forming process, and stage of soil development. Soil lamellae in the upper part of initial sandy soils are mainly transformed by mechanical degradation related to bioturbation. Mechanical degradation of soil lamellae due to clay translocation as well as chemical degradation due to dissolution of iron compounds occur in the upper part of well-developed sandy soils in which podzolization takes place and the eluvial horizon is well-developed. Mechanical degradation of soil lamellae due to bioturbation and clay translocation occurs in the upper part of well-developed sandy soils, which do not exhibit podzolization. Soil lamellae occurring in the lower part of initial and well-developed sandy soils develop progressively due to the illuviation and accumulation of clay and iron compounds as well as lack of biological activity.

片层出现在世界各地的 Podzols 中，主要在残积层和母质中，而在残积层中它们通常不存在或非常罕见。虽然对薄片起源进行了许多研究，但很少有研究关注它们在土壤剖面中的转变，包括薄片在土壤形成过程中的消失。一些研究表明，随着时间的推移，薄片向物理降解的转变经常发生。然而，对于发生在相似环境条件下、由相同母体材料形成且仅在主要成土过程类型方面不同的土壤中的片层转化仍然缺乏研究。本研究的主要目的是：(1) 确定波兰南部中等湿润气候下沙质土壤中与灰化作用有关的层状转化机制，以及 (2) 比较受和未受灰化作用影响的发育良好的沙质土壤中的层状转化机制。获得的结果表明，土壤薄片通常出现在波兰南部的沙质土壤中 - 其特征是形态非常多样化以及物理和化学性质不同。与层间土壤相比，土壤层状土壤的细粒、铁、铝和总有机碳含量更高。土壤薄片受不同转化机制的影响，这取决于它们在土壤剖面中的位置、主要的土壤形成过程和土壤发育阶段。初始砂质土壤上部的土壤片层主要通过与生物扰动相关的机械降解转化。粘土易位引起的土壤片层的机械降解以及铁化合物溶解引起的化学降解发生在发育良好的砂质土壤的上部，其中发生灰化，沉积层发育良好。由于生物扰动和粘土易位，土壤片层的机械降解发生在发育良好的沙质土壤的上部，不表现出灰化。由于粘土和铁化合物的沉积和沉积以及缺乏生物活性，在初始和发育良好的沙质土壤下部发生的土壤片层逐渐发育。