干旱区生态环境知识资源中心(Arid): Impact of rainfall structure and climate change on soil and groundwater salinization

Arid

DOI	10.1007/s10584-020-02789-0
	Impact of rainfall structure and climate change on soil and groundwater salinization
	Slama, Fairouz; Gargouri-Ellouze, Emna; Bouhlila, Rachida
通讯作者	Slama, F
来源期刊	CLIMATIC CHANGE
ISSN	0165-0009
EISSN	1573-1480
出版年	2020
卷号	163 期号:1 页码:395-413
英文摘要	Irrigated areas, mainly in arid regions, are threatened by salinization processes. Climate change inducing temperature rise and rainfall depletion are expected to enhance these processes. Numerical models are often used to predict salinization in the root zone as well as water and solute fluxes reaching groundwater. Climatic data, mainly rainfall, have an important influence on the estimation of those fluxes. The present paper studies the impact of rainfall structure and climate change on soil and groundwater salinization. Soil samples were collected in three drip-irrigated plots in Korba semi-arid coastal plain in Tunisia during dry and wet seasons. Collected field data (water contents and soil salinities) are used to define the initial solute and flow conditions and to estimate the soil hydraulic parameters for numerical modeling. Daily rainfall structure and annual rainfall transition under both Markov Chain and climate change (RCP4.5 and RCP8.5) are assessed. Different climatic scenarios are then introduced as boundary conditions in HYDRUS-1D, to test the influence of rainfall on the salinity evolution in the soil profile and groundwater. Results show that both annual rainfall amounts and daily structure have an impact on soil concentrations and solute fluxes quantities reaching groundwater. The influence of rainfall paths is more important for larger unsaturated zone thickness when considering the dry and median rainfall conditions. Climate change scenarios show significant accumulation of salts in the root zone implying the imperative use of adequate irrigation practices.
英文关键词	Markov chain Standardized precipitation index Climate change Irrigation return flow Salinization HYDRUS-1D
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000549295200002
WOS关键词	HYDROLOGICAL BASIN LEVEL ; COASTAL AQUIFER ; ENVIRONMENTAL-QUALITY ; SEAWATER INTRUSION ; CAP-BON ; IRRIGATION ; WATER ; CALIBRATION ; TRANSPORT ; RECHARGE
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325071
作者单位	[Slama, Fairouz; Gargouri-Ellouze, Emna; Bouhlila, Rachida] Univ Tunis El Manar, Natl Engn Sch TUNIS ENIT, LR99ES19 Lab Modelling Hydraul & Environm LMHE, BP 37, Tunis 1002, Tunisia
推荐引用方式 GB/T 7714	Slama, Fairouz,Gargouri-Ellouze, Emna,Bouhlila, Rachida. Impact of rainfall structure and climate change on soil and groundwater salinization[J],2020,163(1):395-413.
APA	Slama, Fairouz,Gargouri-Ellouze, Emna,&Bouhlila, Rachida.(2020).Impact of rainfall structure and climate change on soil and groundwater salinization.CLIMATIC CHANGE,163(1),395-413.
MLA	Slama, Fairouz,et al."Impact of rainfall structure and climate change on soil and groundwater salinization".CLIMATIC CHANGE 163.1(2020):395-413.