干旱区生态环境知识资源中心(Arid): The impact of replacing groundwater by treated sewage effluent on the irrigation requirements of Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi) forests in the hyper-arid deserts of Abu Dhabi

Arid

DOI	10.1016/j.agwat.2018.12.031
	The impact of replacing groundwater by treated sewage effluent on the irrigation requirements of Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi) forests 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	214 页码:28-37
英文摘要	The arid forests of Abu Dhabi are valuable but they require irrigating. Currently groundwater (GW) is the source of this water, but these subterranean reserves are being over-exploited. Law No 5 of 2016 on the regulation of GW has been passed by the Government of Abu Dhabi to reduce GW abstraction. Abu Dhabi has a supply of tertiary-treated sewage effluent (TSE) that could be used as an alternative for irrigation. We set up experiments near Madinat Zayed in the Al Dhafra region of Abu Dhabi on two arid-forest species: Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi). The trees were planted at 8 m x 8 m spacing. The TSE is significantly 'sweeter' than GW, as its electrical conductivity is < 1 dS m(-1), whereas GW is 8-10 dS m(-1). The GW in this region is very high in nitrates (38.4 +/- 9.2 mg-NO3 L-1), and this was not significantly different from the TSE (53.7 +/- 11.8 mg-NO3 L-1). We monitored the actual tree water-use (ETc, L h(-1)) via heat-pulse devices in both the GW and TSE-irrigated trees. We quantified the differences in the ETc patterns for both the GW and TSE-irrigated trees of both species over 3 years. Both species showed positive growth-responses to TSE, relative to the GW, and we consider this to be due to the lower electrical conductivity of the TSE water. Because of this growth response the ETc of the TSE by the Ghaf trees was, on annual average 17% higher than GW, and for the Sidr it was 39%. Our results were corroborated by leaf conductance and leaf-area inferences. But for TSE there is no need for a salt-leaching fraction. Furthermore, to achieve the same tree-health outcome as with the GW, even less TSE need be applied. Irrigation requirements for TSE were at least 25% less than for GW.
英文关键词	Saline groundwater Treated sewage effluent Arid forests Irrigation, environmental regulations 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:000458592700004
WOS关键词	WATER-USE ; TREES ; REUSE ; AREA
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/2XILL650/214000
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. The impact of replacing groundwater by treated sewage effluent on the irrigation requirements of Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi) forests in the hyper-arid deserts of Abu Dhabi[J],2019,214:28-37.
APA	Al-Yamani, Wafa.,Green, Steve.,Pangilinan, Rommel.,Dixon, Steve.,Shahid, Shabbir A..,...&Clothier, Brent.(2019).The impact of replacing groundwater by treated sewage effluent on the irrigation requirements of Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi) forests in the hyper-arid deserts of Abu Dhabi.AGRICULTURAL WATER MANAGEMENT,214,28-37.
MLA	Al-Yamani, Wafa,et al."The impact of replacing groundwater by treated sewage effluent on the irrigation requirements of Al Ghaf (Prosopis cineraria) and Al Sidr (Ziziphus spina-christi) forests in the hyper-arid deserts of Abu Dhabi".AGRICULTURAL WATER MANAGEMENT 214(2019):28-37.