干旱区生态环境知识资源中心(Arid): The effects of soil freeze-thaw processes on water and salt migrations in the western Songnen Plain, China

Arid

DOI	10.1038/s41598-021-83294-x
	The effects of soil freeze-thaw processes on water and salt migrations in the western Songnen Plain, China
	Qin, Yan; Bai, Yufeng; Chen, Guoshuang; Liang, Yunjiang; Li, Xiaoyu; Wen, Bolong; Lu, Xinrui; Li, Xiujun
通讯作者	Lu, XR ; Li, XJ (corresponding author), Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	Seasonally freeze-thaw (FT) processes affect soil salinisation in cold and arid regions. Therefore, understanding the mechanisms behind soil salinisation during winter and spring is crucial for management strategies effectively alleviating this. This study aimed to explore the soil FT characteristics and their influences on soil water and salt migrations to clarify the underlying mechanism of the springtime soil salinisation in the western Songnen Plain, China. The spatiotemporal distributions of soil water and salt, frozen depths and soil temperatures were examined at depths of 0-200 cm in three typical landscapes (farmland, Leymus chinensis (Trin.) Tzvel (LT) grassland and alkali-spot (AS) land) from October 2015 to June 2016. Results indicated that the strongest freezing process occurred in AS land, which was characterised by the deepest frost depth (165 cm) and highest freezing rate (3.58 cm/d), followed by LT grassland, and then farmland. The freeze-induced upward redistribution and enrichment of soil water and salt caused the rise and expansion of the soil salification layer, which was the main source of explosive accumulations of surface salt in springtime. Therefore, the FT processes contributed to the surface soil salinisation and alkalisation. Landscapes also affected soil water and salt migrations during FT processes, with the trend being AS land>LT grassland>farmland.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000626727200039
WOS关键词	CHEMICAL-PROPERTIES ; SALINE SOIL ; SNOW COVER ; HEAT-FLUX ; MECHANISM ; SALINIZATION ; VEGETATION ; SOLUTE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351704
作者单位	[Qin, Yan; Bai, Yufeng; Chen, Guoshuang; Li, Xiaoyu; Wen, Bolong; Lu, Xinrui; Li, Xiujun] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China; [Qin, Yan; Bai, Yufeng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liang, Yunjiang] Yanbian Univ, Coll Agr, Yanji 133002, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Qin, Yan,Bai, Yufeng,Chen, Guoshuang,et al. The effects of soil freeze-thaw processes on water and salt migrations in the western Songnen Plain, China[J],2021,11(1).
APA	Qin, Yan.,Bai, Yufeng.,Chen, Guoshuang.,Liang, Yunjiang.,Li, Xiaoyu.,...&Li, Xiujun.(2021).The effects of soil freeze-thaw processes on water and salt migrations in the western Songnen Plain, China.SCIENTIFIC REPORTS,11(1).
MLA	Qin, Yan,et al."The effects of soil freeze-thaw processes on water and salt migrations in the western Songnen Plain, China".SCIENTIFIC REPORTS 11.1(2021).