Cyclic freeze-thaw as a mechanism for water and salt migration in soil

被引：105

作者：

Bing, Hui ^{[1
]}

He, Ping ^{[2
]}

Zhang, Ying ^{[1
]}

机构：

[1] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China

[2] Beijing Jiaotong Univ, Sch Civil Engn & Architecture, Beijing 100044, Peoples R China

来源：

ENVIRONMENTAL EARTH SCIENCES | 2015年 / 74卷 / 01期

关键词：

Cyclic freeze-thaw; Water and salt redistribution; Temperature gradient; Convection; GROUNDWATER; IRRIGATION; TRANSPORT;

D O I：

10.1007/s12665-015-4072-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Freeze-thaw action acts as a controlling mechanism for redistributing soil water and salt. The paper focuses on the factors that influence soil water and salt migration and uses experimental results to analyze the mechanism of cyclic freeze-thaw in which the temperature gradient is the principal factor for water and salt transfer. Salt redistribution in soil occurs as a result of the integrated effects of convection, diffusion, and numerous chemical and physicochemical processes.

引用

页码：675 / 681

页数：7

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