干旱区生态环境知识资源中心(Arid): Water use of Al Samr (Acacia tortilis) forests irrigated with saline groundwater and treated sewage effluent in the hyper-arid deserts of Abu Dhabi

Arid

DOI	10.1016/j.agwat.2019.01.024
	Water use of Al Samr (Acacia tortilis) forests irrigated with saline groundwater and treated sewage effluent in the hyper-arid deserts of Abu Dhabi
	Al-Yamani, Wafa 1,5; Green, Steve 2; Pangilinan, Rommel 1; Dixon, Steve 3; Shahid, Shabbir A.4; Kemp, Peter 5; Clothier, Brent 2
通讯作者	Clothier, Brent
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	216 页码:361-364
英文摘要	The arid forests planted in Abu Dhabi provide a variety of valuable ecosystem services. The forests need to be irrigated, and currently groundwater (GW) provides the bulk of this water. However GW recharge is very low, and reserves are rapidly dwindling and becoming more saline. In 2016, Law 5 was passed in Abu Dhabi with the objective to set GW extraction limits and define irrigation-usage allowances. Here we sought to define the usage allowance for Al Samr trees, and this work complements our previous research on Al Ghaf and Al Sidr forests. We have measured tree water-use, ETc, using sapflow monitoring of GW-irrigated trees, and trees irrigated with treated sewage effluent (TSE). Maximum rates of tree water-use, ETc, were found to around 10 L d(-1), and there are two distinct deciduous periods where ETc briefly dropped below 2 L d(-1). The total annual water use of the TSE-irrigated trees was 2.2 kL y(-1), which is about 25% higher than the 1.8 kL y(-1) for the GW-irrigated trees. For Law 5, we recommend that the irrigation allocation for Al Samr trees be simply based on a constant ETc of 10 L d(-1). So for GW irrigation, allowing for a 25% factor-of-safety, and a 25% salt-leaching fraction, the recommended allocation would be 15 L d(-1). This represents a saving of 75% from the current practice of irrigation 60 L d(-1). For TSE, without the need for salt leaching, the irrigation allocation would only need to be 12.5 L d(-1).
英文关键词	Groundwater management Treated sewage-effluent Irrigation Environmental regulations Tree water-use Crop factor
类型	Article
语种	英语
国家	U Arab Emirates ; New Zealand
收录类别	SCI-E
WOS记录号	WOS:000461262400033
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214012
作者单位	1.Environm Agcy Abu Dhabi, Abu Dhabi, U Arab Emirates; 2.New Zealand Inst Plant & Food Res Ltd, Palmerston North, New Zealand; 3.Maven Int, Wellington, New Zealand; 4.Int Ctr Biosaline Agr, Dubai, U Arab Emirates; 5.Massey Univ, Palmerston North, New Zealand
推荐引用方式 GB/T 7714	Al-Yamani, Wafa,Green, Steve,Pangilinan, Rommel,et al. Water use of Al Samr (Acacia tortilis) forests irrigated with saline groundwater and treated sewage effluent in the hyper-arid deserts of Abu Dhabi[J],2019,216:361-364.
APA	Al-Yamani, Wafa.,Green, Steve.,Pangilinan, Rommel.,Dixon, Steve.,Shahid, Shabbir A..,...&Clothier, Brent.(2019).Water use of Al Samr (Acacia tortilis) forests irrigated with saline groundwater and treated sewage effluent in the hyper-arid deserts of Abu Dhabi.AGRICULTURAL WATER MANAGEMENT,216,361-364.
MLA	Al-Yamani, Wafa,et al."Water use of Al Samr (Acacia tortilis) forests irrigated with saline groundwater and treated sewage effluent in the hyper-arid deserts of Abu Dhabi".AGRICULTURAL WATER MANAGEMENT 216(2019):361-364.