Eurasian Soil Science ( IF 1.4 ) Pub Date : 2022-04-11 , DOI: 10.1134/s1064229322030152 E. P. Zazovskaya 1 , N. S. Mergelov 1 , V. A. Shishkov 1 , A. V. Dolgikh 1 , A. S. Dobryansky 1 , S. M. Turchinskaya 1 , S. V. Goryachkin 1 , M. P. Lebedeva 2
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Abstract
Cryoconite is an organomineral sediment on the surface of glaciers. It has predominantly an eolian origin, demonstrates high microbial activity, and contains a relatively large pool of nutrients. When glaciers retreat, the cryoconite material is translocated to the periglacial zone, where it serves as a nutrient-rich fine-textured parent rock component that promotes establishment of initial soils. Here we examine the spatial patterns of cryoconite on the surface of Aldegonda Glacier (Svalbard) and investigate the further pedogenic transformation of cryoconite material in periglacial environments of this rapidly retreating glacier. The data on micromorphology, composition of carbon and nitrogen stable isotopes, and radiocarbon age of different organic matter fractions in cryoconite and cryoconite-influenced periglacial soils are discussed. We demonstrate that soils formed on cryoconite material partially inherit its properties, and the soil formation processes can be accelerated by an order of magnitude compared to the surrounding nutrient-poor and coarse-textured till.
中文翻译：
西斯瓦尔巴阿尔德贡达冰川快速退缩条件下，冰粒岩作为土壤发育的因素
摘要
冰晶石是冰川表面的有机矿物沉积物。它主要起源于风成，表现出高微生物活性，并含有相对大量的营养物质。当冰川退缩时，冰粒物质被转移到冰缘带，在那里它作为一种营养丰富的、质地细腻的母岩成分，促进了初始土壤的形成。在这里，我们检查了 Aldegonda 冰川（斯瓦尔巴群岛）表面的冰粒的空间格局，并研究了冰粒材料在这个快速退缩的冰川的冰缘环境中的进一步成土转化。讨论了冰粒和受冰粒影响的冰缘土壤中不同有机质组分的微形态、碳和氮稳定同位素组成以及放射性碳年龄的数据。
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