气候变化领域集成服务门户(CCPortal): Role of Cryoconite Translocation on the Biogeochemical Features of Alpine Soils at the Central Caucasus Region, Mount Elbrus

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DOI	10.1007/s40710-024-00706-6
	Role of Cryoconite Translocation on the Biogeochemical Features of Alpine Soils at the Central Caucasus Region, Mount Elbrus
	Kushnov, Ivan; Tembotov, Rustam; Nizamutdinov, Timur; Abakumov, Evgeny
发表日期	2024
ISSN	2198-7491
EISSN	2198-7505
起始页码	11
结束页码	2
卷号	11 期号:2
英文摘要	The study of cryoconite - a specific organomineral sediment on the glacier surface - is essential to estimate environmental processes and sustainability, biogeochemical cycles, pollution rate and degree of human influence under conditions of climate change and diverse anthropogenic activities. Key chemical and physical features such as pH values, total organic carbon and hot-water extractable carbon content, microbial respiration, and particle-size distribution, as well as the content of some trace elements and pollution indices have been determined in materials sampled at the Mt. Elbrus region. The results obtained showed accumulation of easily decomposable carbon and correlated with it high rate of microbial respiration at the Garabashi Glacier, despite the low content of total organic carbon (max. 0.92%) due to its redistribution. Cryoconites at the Garabashi Glacier also efficiently accumulated trace elements, especially Zn (max. 55.40 mg kg- 1) and Pb (max. 26.03 mg kg- 1), up to high pollution level. Domination of silt and sand fractions indicated major role of autochthonous transfer to the glacial zone both from anthropogenic and natural geologic sources. Translocation of cryoconite material to the periglacial zone and anthropogenic activities led to accumulation of both total organic carbon and hot-water extractable carbon as well as trace elements such as Zn (max. 64.40 mg kg- 1) and Cd (max. 0.41 mg kg- 1) in studied Leptosols. Migration of elements from the glacial to the periglacial zone at the Elbrus region can accelerate developments of soils after glacier retreat, while intensification of human activity may pose additional pollution risks for agriculture, tourism and environmental sustainability. Translocation of cryoconites affected key chemical features of local soils.Redistribution of labile carbon led to higher microbial activity in soils.Local transfer of material likely was the dominant source for cryoconites.Migration of trace elements from the glaciers affected pollution level of soils.Cryoconites may act as an environmental indicator at the Mt. Elbrus ecosystems.
英文关键词	Glaciers; Organomineral sediments; Soils; Organic carbon; Biogeochemical cycles; Trace elements
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Environmental
WOS记录号	WOS:001229419100002
来源期刊	ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304046
作者单位	Saint Petersburg State University; Tembotov Institute of Ecology of Mountain Territories of Russian Academy of Sciences; Russian Academy of Sciences
推荐引用方式 GB/T 7714	Kushnov, Ivan,Tembotov, Rustam,Nizamutdinov, Timur,et al. Role of Cryoconite Translocation on the Biogeochemical Features of Alpine Soils at the Central Caucasus Region, Mount Elbrus[J],2024,11(2).
APA	Kushnov, Ivan,Tembotov, Rustam,Nizamutdinov, Timur,&Abakumov, Evgeny.(2024).Role of Cryoconite Translocation on the Biogeochemical Features of Alpine Soils at the Central Caucasus Region, Mount Elbrus.ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL,11(2).
MLA	Kushnov, Ivan,et al."Role of Cryoconite Translocation on the Biogeochemical Features of Alpine Soils at the Central Caucasus Region, Mount Elbrus".ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL 11.2(2024).