干旱区生态环境知识资源中心(Arid): Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment

Arid

DOI	10.1007/s11027-018-9797-9
	Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment
	Guermazi, Emna 1,2; Milano, Marianne 1; Reynard, Emmanuel 1; Zairi, Moncef 2
通讯作者	Guermazi, Emna
来源期刊	MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
ISSN	1381-2386
EISSN	1573-1596
出版年	2019
卷号	24 期号:1 页码:73-92
英文摘要	Climate and anthropogenic changes are expected to reduce renewable groundwater resources and to increase the risks of water scarcity, particularly in arid regions. Understanding current and future risks of water scarcity is vital to make the right water management decision at the right time. This study aims to analyze the impact of both human and climate pressures on groundwater availability in an arid environment: the Regueb basin in Central Tunisia. An integrated approach was used and applied at a monthly time step over a reference period (1976-2005) and a future period (2036-2065). Groundwater resources were assessed using hydrogeological modeling. Irrigation water withdrawals were evaluated based on remote sensing and the CropWat model. Urban water use was estimated from population growth and specific monthly water consumption data. The resulting values were used to compute two indicators (water stress index, groundwater balance) to evaluate water scarcity risks at the 2050 horizon. To assess current and future climate forcing on water resources, three climate scenarios were generated based on simulations from Coupled Model Intercomparison Project Phase 5 (CMIP5) data. A business-as-usual and an adaptation scenario (optimal cropping scenario) were performed by varying the surface areas and the crops grown in the irrigated area. Results show that the average annual water use will increase by 3.8 to 16.4% under climate change only, whereas it will increase by 100% under the business-as-usual scenario. Under the optimal cropping scenario, total water demand will increase by 50%. Water stress index indicates that under the climate change only scenario, water demand should be satisfied by the 2050 horizon, while under the other two scenarios, severe water stress will occur by 2050. The developed framework in this paper aims to fit in arid and semiarid regions in order to evaluate groundwater stress and to assess the efficiency of adaptation strategies. It results in two major recommendations regarding changes in land use and the improvement of groundwater monitoring.
英文关键词	Water stress Climate change Anthropogenic pressure Groundwater
类型	Article
语种	英语
国家	Switzerland ; Tunisia
收录类别	SCI-E
WOS记录号	WOS:000454953400004
WOS关键词	GLOBAL WATER-RESOURCES ; FUTURE-TRENDS ; CATCHMENT ; RAINFALL ; MODELS ; BASIN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217632
作者单位	1.Univ Lausanne, Inst Geog & Sustainabil, Bldg Geopolis, CH-1015 Lausanne, Switzerland; 2.Univ Sfax, Natl Engn Sch Sfax, Dept Geol, PB 11733038, Sfax, Tunisia
推荐引用方式 GB/T 7714	Guermazi, Emna,Milano, Marianne,Reynard, Emmanuel,et al. Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment[J],2019,24(1):73-92.
APA	Guermazi, Emna,Milano, Marianne,Reynard, Emmanuel,&Zairi, Moncef.(2019).Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment.MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE,24(1),73-92.
MLA	Guermazi, Emna,et al."Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment".MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE 24.1(2019):73-92.