‘Machair’ describes a landscape form that is present along the Atlantic seaboard of Scotland and Ireland that is characterized by a gently sloping coastal plain developed from aeolian carbonate and quartzose sand. Three soil profiles were characterized along a coastal transect on Harris (Outer Hebrides, Scotland) by standard methods (colour, texture, pH, wet-chemical extractions), infrared spectroscopy, X-ray diffractometry, X-ray fluorescence spectrometry and differential scanning calorimetry. The aim was to understand chemical processes and properties of soils that have formed under the influence of sedimentation, erosion, weathering, accumulation of soil organic matter (SOM), and human impact. One of the profiles differed distinctly from the other two, in particular regarding depth, texture, contents of carbonate and SOM, and properties of SOM (relative content of rather labile permanganate-oxidizable SOM, oxidation, interaction with clay minerals). Thermally stable SOM was present in all soil samples, likely pointing to pyrogenic SOM, i.e. black carbon. The mineralogical composition differed among the profiles and reflected the intermediate character of the local rocks. Magnesium-hydroxy-interlayered minerals were identified in all surface Ah horizons. We suggest that sea spray was the likely source of intercalated Mg. The shallowest soil was classified as Hypereutric Leptosol and the others as a Cambic and Calcaric Phaeozem. Results warrant a more detailed survey on the yet less studied interplay of SOM properties and mineral (trans-) formation in highly diverse and dynamic coastal soils that are frequently affected by long-term agricultural use.

“椅子”描述的是苏格兰和爱尔兰大西洋沿岸的景观形式，其特征是由风成碳酸盐和石英砂形成的缓坡沿海平原。通过标准方法（颜色，质地，pH，湿化学提取），红外光谱，X射线衍射法，X射线荧光光谱法和差示扫描量热法，在哈里斯（外赫布里底，苏格兰）哈里斯沿海沿岸断面表征了三种土壤剖面。目的是了解在沉积，侵蚀，风化，土壤有机质（SOM）累积和人类影响的影响下形成的土壤的化学过程和性质。其中一个剖面与其他两个剖面截然不同，尤其是在深度，质地，碳酸盐含量和SOM含量方面，和SOM的特性（高锰酸盐可氧化SOM的相对含量不稳定，氧化，与粘土矿物的相互作用）。在所有土壤样品中均存在热稳定的SOM，可能是热源性SOM，即黑碳。矿物成分在剖面之间有所不同，并反映了局部岩石的中间特征。在所有地表Ah层中都发现了镁-羟基夹层矿物。我们建议海浪可能是嵌入的镁的来源。最浅的土壤被归类为富油性钩端草，其余为坎比生和钙生的辉石。结果表明，对于经常受到长期农业使用影响的高度多样化和动态的沿海土壤中SOM特性与矿物质（反式）形成之间相互作用的研究，尚需进行更详细的调查。