干旱区生态环境知识资源中心(Arid): Modelling the Impact on Root Water Uptake and Solute Return Flow of Different Drip Irrigation Regimes with Brackish Water

Arid

DOI	10.3390/w11030425
	Modelling the Impact on Root Water Uptake and Solute Return Flow of Different Drip Irrigation Regimes with Brackish Water
	Slama, Fairouz 1; Zemni, Nessrine 1,2; Bouksila, Fethi 2; De Mascellis, Roberto 3; Bouhlila, Rachida 1
通讯作者	Slama, Fairouz
来源期刊	WATER
ISSN	2073-4441
出版年	2019
卷号	11 期号:3
英文摘要	Water scarcity and quality degradation represent real threats to economic, social, and environmental development of arid and semi-arid regions. Drip irrigation associated to Deficit Irrigation (DI) has been investigated as a water saving technique. Yet its environmental impacts on soil and groundwater need to be gone into in depth especially when using brackish irrigation water. Soil water content and salinity were monitored in a fully drip irrigated potato plot with brackish water (4.45 dSm(-1)) in semi-arid Tunisia. The HYDRUS-1D model was used to investigate the effects of different irrigation regimes (deficit irrigation (T1R, 70% ETc), full irrigation (T2R, 100% ETc), and farmer's schedule (T3R, 237% ETc) on root water uptake, root zone salinity, and solute return flows to groundwater. The simulated values of soil water content (theta) and electrical conductivity of soil solution (ECsw) were in good agreement with the observation values, as indicated by mean RMSE values (<= 0.008 m(3)center dot m(-3), and <= 0.28 dSm(-1) for soil water content and ECsw respectively). The results of the different simulation treatments showed that relative yield accounted for 54%, 70%, and 85.5% of the potential maximal value when both water and solute stress were considered for deficit, full. and farmer's irrigation, respectively. Root zone salinity was the lowest and root water uptake was the same with and without solute stress for the treatment corresponding to the farmer's irrigation schedule (273% ETc). Solute return flows reaching the groundwater were the highest for T3R after two subsequent rainfall seasons. Beyond the water efficiency of DI with brackish water, long term studies need to focus on its impact on soil and groundwater salinization risks under changing climate conditions.
英文关键词	deficit irrigation brackish water soil and groundwater salinity HYDRUS-1D root water uptake irrigation return flow
类型	Article
语种	英语
国家	Tunisia ; Italy
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000464535600007
WOS关键词	REGULATED DEFICIT IRRIGATION ; SOIL-WATER ; HYDRAULIC CONDUCTIVITY ; RIVER-BASIN ; SALINITY ; SALT ; SALINIZATION ; CROP ; EVAPOTRANSPIRATION ; SPRINKLER
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/2XILL650/219179
作者单位	1.Univ Tunis El Manar ENIT, Natl Engn Sch TUNIS, Lab Modelling Hydraul & Environm, Box 37, Tunis 1002, Tunisia; 2.Natl Inst Res Rural Engn Waters & Forests, Box 10, Ariana 2080, Tunisia; 3.CNR Natl Res Council Italy, ISAFOM Inst Agr & Forestry Syst Mediterranean, Via Patacca 85, I-80056 Ercolano Na, Italy
推荐引用方式 GB/T 7714	Slama, Fairouz,Zemni, Nessrine,Bouksila, Fethi,et al. Modelling the Impact on Root Water Uptake and Solute Return Flow of Different Drip Irrigation Regimes with Brackish Water[J],2019,11(3).
APA	Slama, Fairouz,Zemni, Nessrine,Bouksila, Fethi,De Mascellis, Roberto,&Bouhlila, Rachida.(2019).Modelling the Impact on Root Water Uptake and Solute Return Flow of Different Drip Irrigation Regimes with Brackish Water.WATER,11(3).
MLA	Slama, Fairouz,et al."Modelling the Impact on Root Water Uptake and Solute Return Flow of Different Drip Irrigation Regimes with Brackish Water".WATER 11.3(2019).