干旱区生态环境知识资源中心(Arid): Synlithogenic Evolution of Floodplain Soils in Valleys of Small Rivers in the Trans-Ural Steppe

Arid

DOI	10.1134/S1064229319060061
	Synlithogenic Evolution of Floodplain Soils in Valleys of Small Rivers in the Trans-Ural Steppe
	Ivanov, I., V 1; Prikhodko, V. E.1; Zamotaev, I., V 2; Manakhov, D., V 3; Novenko, E. Yu 3; Kalinin, P., I 1; Markova, L. M.4; Plaksina, A. L.4
通讯作者	Ivanov, I., V
来源期刊	EURASIAN SOIL SCIENCE
ISSN	1064-2293
EISSN	1556-195X
出版年	2019
卷号	52 期号:6 页码:593-609
英文摘要	The relationship between soil formation and sedimentation on the floodplain of the Utyaganka River (the Ural River basin) in the Arkaim Reserve (Chelyabinsk oblast, Southern Ural, Russia) was studied. Pedological, palynological, and mineralogical research methods were applied, and 15 radiocarbon dates of soil humus and sediments were obtained. The thickness of the Holocene sediments on the low floodplain is 4-5 m. Their top 1.5-m-thick layer formed in the recent 2000 yr contains three buried (partially superposed) soils formed at the mean rate of 13.3 cm/100 yr. Alluvial soddy soils with solonetzic and salinity features reflect intensive anthropogenic erosion in the river basin and characterize the Little Ice Age and the dry and warm Viking Age. At the depth of 1.5-5 m, there are up to five buried soils separated from one another by alluvium layers; they were formed in the period of 12000-2000 BP at the rate of 1.9-3.1 cm/100 yr. Among them, the soils that developed 4200-2000 BP are characterized by varying humus content and solonetzicity; they are enriched with carbonates and reflect sharp fluctuations in atmospheric moistening against the background of dominating arid and continental climate. The soils formed 5500-4200 BP are gleyed, moderately humified, and calcareous; they testify to a more humid and warm climate than now. This period was characterized by the maximal area of forests (the pollen of tree species reaches 67%). The period of 8000-5500 BP was specified by warm and dry climate, which is indicated by soil properties and palynological data (15% of tree pollen). Soils formed 9500-8000 BP on stony proluvium-alluvium are eroded mucky gley soils; they reflect sharp fluctuations of the climate at the end of the glacial epoch. Floods were probably accompanied not only by alluvium accumulation but also by regular erosion of the surface and a decrease in the thickness of the humus horizon. This resulted in the renewal of soils and slowed down the increase in the thickness of humus horizon and in the intensity of alluvium accumulation. The average portion of humified soil layers reaches 26% of the total thickness of alluvial sediments.
英文关键词	alluvial soils sedimentation rate time series climatic cycles palynological studies
类型	Article
语种	英语
国家	Russia
收录类别	SCI-E
WOS记录号	WOS:000474419400001
WOS关键词	HOLOCENE ; CHERNOZEMS ; CLIMATE ; ACCUMULATION ; VEGETATION ; MOUNTAINS ; DYNAMICS ; ANCIENT ; EURASIA
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215576
作者单位	1.Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino 142290, Moscow Oblast, Russia; 2.Russian Acad Sci, Inst Geog, Moscow 119017, Russia; 3.Lomonosov Moscow State Univ, Moscow 119991, Russia; 4.Chelyabinsk State Univ, Russia 454001, Russia
推荐引用方式 GB/T 7714	Ivanov, I., V,Prikhodko, V. E.,Zamotaev, I., V,et al. Synlithogenic Evolution of Floodplain Soils in Valleys of Small Rivers in the Trans-Ural Steppe[J],2019,52(6):593-609.
APA	Ivanov, I., V.,Prikhodko, V. E..,Zamotaev, I., V.,Manakhov, D., V.,Novenko, E. Yu.,...&Plaksina, A. L..(2019).Synlithogenic Evolution of Floodplain Soils in Valleys of Small Rivers in the Trans-Ural Steppe.EURASIAN SOIL SCIENCE,52(6),593-609.
MLA	Ivanov, I., V,et al."Synlithogenic Evolution of Floodplain Soils in Valleys of Small Rivers in the Trans-Ural Steppe".EURASIAN SOIL SCIENCE 52.6(2019):593-609.