干旱区生态环境知识资源中心(Arid): Modelling Soil Water, Salt and Heat Dynamics under Partially Mulched Conditions with Drip Irrigation, Using HYDRUS-2D

Arid

DOI	10.3390/w14182791
	Modelling Soil Water, Salt and Heat Dynamics under Partially Mulched Conditions with Drip Irrigation, Using HYDRUS-2D
	Tian, Huiwen; Bo, Liyuan; Mao, Xiaomin; Liu, Xinyu; Wang, Yan; Hu, Qingyang
通讯作者	Mao, XM
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:18
英文摘要	Drip irrigation under mulch is a widely used technique in the arid region of northwest China. The partially mulched soil and the bare strips between mulched areas may complicate the migration of water, salt, and heat in soils, and cause lateral salt accumulation on bare soil surfaces. For investigating hydrothermal dynamics and salt distribution patterns under such circumstances, tank experiments with drip irrigation under plastic film on partially mulched soil were conducted under two intensities of drip irrigation (i.e., low (W1) and high (W2)) with the same total irrigation amount. The spatial distributions of soil water, temperature, and electrical conductivity were monitored accordingly. The two-dimensional (2D) model of soil water, salt, and heat transport under drip irrigation and partially mulched soil conditions was established using HYDRUS-2D, and kinetic adsorption during salt migration was considered. The results of the experiments showed that the uneven distribution of the hydrothermal state led to the accumulation of salt on the un-mulched soil surface. Water migrated from where the dripper was located, and heat accumulated mainly in the mulched soil. HYDRUS-2D matched reasonably well with the observed data, with an R-2 higher than 0.54. Under the partially mulched conditions, lower intensity of drip irrigation (W1) show higher desalination efficiency in root zones, with less even lateral salt distribution. Scenario simulations further demonstrated that a larger total irrigation amount would result in a larger desalination zone, and drip irrigations with appropriate incremental intensity could improve salt leaching in the root zone with increased lateral migration of water.
英文关键词	soil moisture soil salinity northwest China kinetic adsorption desalination efficiency irrigation practice
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000857047100001
WOS关键词	NUMERICAL SIMULATIONS ; SALINITY DISTRIBUTION ; PLASTIC MULCH ; MAIZE FIELD ; TRANSPORT ; FLOW ; CONDUCTIVITY ; BALANCE ; SYSTEM ; YIELD
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394833
推荐引用方式 GB/T 7714	Tian, Huiwen,Bo, Liyuan,Mao, Xiaomin,et al. Modelling Soil Water, Salt and Heat Dynamics under Partially Mulched Conditions with Drip Irrigation, Using HYDRUS-2D[J],2022,14(18).
APA	Tian, Huiwen,Bo, Liyuan,Mao, Xiaomin,Liu, Xinyu,Wang, Yan,&Hu, Qingyang.(2022).Modelling Soil Water, Salt and Heat Dynamics under Partially Mulched Conditions with Drip Irrigation, Using HYDRUS-2D.WATER,14(18).
MLA	Tian, Huiwen,et al."Modelling Soil Water, Salt and Heat Dynamics under Partially Mulched Conditions with Drip Irrigation, Using HYDRUS-2D".WATER 14.18(2022).