中文版 | English
Arid
DOI10.5004/dwt.2020.25501
Groundwater economics in arid regions: Abu Dhabi Emirate case study
Dawoud, Mohamed A.
通讯作者Dawoud, MA (corresponding author), Environm Agcy, Abu Dhabi, U Arab Emirates.
会议名称WSTA 13th Gulf Water Conference - Water in the GCC - Challenges and Innovative Solutions
会议日期MAR 12-14, 2019
会议地点KUWAIT
英文摘要In arid and semiarid regions, groundwater is scarce, limited and non-renewable but it is a vital resource that supports a variety of societal uses and benefits. With growing demand due to extension in agriculture and domestic sectors, groundwater resources are coming under greater pressure following reductions in surface water yields, due to reduced rainfall and over abstraction. Over abstraction due to increasing demand or climate, change-driven changes in spatial distribution of precipitation can result in a reduction in groundwater quantity and deterioration in quality. Increased population and economic development inevitably result in an increase in the generation of waste products and, if disposed of inappropriately, these have the potential to contaminate groundwater resources and lead to degradation and economic costs. This creates the need for a higher profile regulatory and management regime for this limited groundwater resources. Given climate variability and the environmental challenges, the importance of groundwater as a resource is ever increasing in arid regions. Abu Dhabi emirate is an arid region facing the challenges of renewable fresh water scarcity. In the year 2014, groundwater use accounts for about 63% of total water demand in the Emirate, with the remaining portion of demand being met through desalinated (28%) and recycled water (9%). Groundwater is used mainly for agriculture, forestry sectors, which together have accounted for over 95% of total annual withdrawals. Agriculture alone has accounted for 80% of total recent withdrawals. The total present annual abstraction from the groundwater aquifers is about 2,300 million cubic meters. However, the annual natural recharge to the aquifer systems ranges between 90 and 140 million cubic meters only. Numerous wellfields abstract groundwater of various qualities and in some areas massive over-abstraction has resulted in alarming groundwater declines and a severe deterioration in groundwater quality. This policy has led to a reduction in the groundwater table which caused numerous shallow wells to go dry and impact the farms. It is estimated that there is still 641 km(3) groundwater resources available (saline, brackish and fresh), but only less than 3% of this reserve is fresh and, based on current abstraction rates, both fresh and brackish reserves will be depleted within the next 50 years. The purpose of this study is to assess the economic value of groundwater resources in the Abu Dhabi Emirate. A dynamic hydro-economic optimization model was developed and applied. This model evaluates the net benefits and economic tradeoffs across alternative water by simulating groundwater reserves and withdrawals for different regions, time periods, and development sectors. Using this model, we estimate the value of Abu Dhabi's groundwater resources (in total and per cubic meter).
英文关键词Groundwater Recharge Groundwater economics Groundwater management Desalination Treated wastewater
来源出版物DESALINATION AND WATER TREATMENT
ISSN1944-3994
EISSN1944-3986
出版年2020
卷号176
页码84-93
出版者DESALINATION PUBL
类型Article; Proceedings Paper
语种英语
收录类别CPCI-S
WOS记录号WOS:000544992300015
WOS类目Engineering, Chemical ; Water Resources
WOS研究方向Engineering ; Water Resources
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/337031
作者单位[Dawoud, Mohamed A.] Environm Agcy, Abu Dhabi, U Arab Emirates
推荐引用方式
GB/T 7714		 Dawoud, Mohamed A.. Groundwater economics in arid regions: Abu Dhabi Emirate case study[C]:DESALINATION PUBL,2020:84-93.
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