干旱区生态环境知识资源中心(Arid): Simulation of dynamical interactions between soil freezing/thawing and salinization for improving water management in cold/arid agricultural region

Arid

DOI	10.1016/j.geoderma.2018.12.022
	Simulation of dynamical interactions between soil freezing/thawing and salinization for improving water management in cold/arid agricultural region
	Wu, Mousong 1,2,5; Wu, Jingwei 1; Tan, Xiao 1,3; Huang, Jiesheng 1; Jansson, Per-Erik 2; Zhang, Wenxin 4
通讯作者	Wu, Jingwei ; Zhang, Wenxin
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2019
卷号	338 页码:325-342
英文摘要	In cold/arid agricultural regions seasonal freezing/thawing of soils can result in soil salinization in winter; therefore, it is crucial to understand the mechanisms behind soil salinization during winter for better water management in agriculture. In Hetao Irrigation District of Inner Mongolia, northern China, we used the CoupModel (version 5) considering dynamical impacts of salt on soil freezing point to simulate soil salt dynamics and soil freezing/thawing in three winters during 2012-2015. The simulated soil temperature at different depths was improved by 10% with respect to the Nash-Sutcliffe coefficient NSE R-2 when dynamical salt impact on freezing point was taken into accounted. Simulations revealed that ice coverage on soil surface as well as water stored in drainage ditches during winter cause more severe salinization in spring due to improper Al (Autumn Irrigation) practices combining poor drainage systems. A new Al practice with earlier irrigation date (i.e. 10 d earlier than 2012/2013 winter regulation), longer irrigation period (i.e. 7 d instead of 3 d), but with less irrigation water (reduced by 20% from 2012/2013 winter regulation) was then proposed. The new AI practice can control groundwater level and salt accumulation better during winters, Our results highlight the importance of combining detailed field irrigation tests with a process-based model accounting for interactions between soil freezing/thawing and salinization to improve water management efficiency in cold/arid agricultural regions.
英文关键词	Soil salinization Cold/arid agricultural field Freezing point depression Water management Coupled modeling
类型	Article
语种	英语
国家	Peoples R China ; Sweden ; Denmark
收录类别	SCI-E
WOS记录号	WOS:000457657000033
WOS关键词	MODELING WATER ; HEAT-BALANCE ; SOLUTE ; TEMPERATURE ; CALIBRATION ; MOISTURE ; FLUXES
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215924
作者单位	1.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China; 2.KTH Royal Inst Technol, Dept Sustainable Dev Environm Sci & Engn, S-10044 Stockholm, Sweden; 3.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China; 4.Univ Copenhagen, Ctr Permafrost, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen, Denmark; 5.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wu, Mousong,Wu, Jingwei,Tan, Xiao,et al. Simulation of dynamical interactions between soil freezing/thawing and salinization for improving water management in cold/arid agricultural region[J]. 南京大学,2019,338:325-342.
APA	Wu, Mousong,Wu, Jingwei,Tan, Xiao,Huang, Jiesheng,Jansson, Per-Erik,&Zhang, Wenxin.(2019).Simulation of dynamical interactions between soil freezing/thawing and salinization for improving water management in cold/arid agricultural region.GEODERMA,338,325-342.
MLA	Wu, Mousong,et al."Simulation of dynamical interactions between soil freezing/thawing and salinization for improving water management in cold/arid agricultural region".GEODERMA 338(2019):325-342.