干旱区生态环境知识资源中心(Arid): Water use of Prosopis juliflora and its impacts on catchment water budget and rural livelihoods in Afar Region, Ethiopia

Arid

DOI	10.1038/s41598-021-81776-6
	Water use of Prosopis juliflora and its impacts on catchment water budget and rural livelihoods in Afar Region, Ethiopia
	Shiferaw, Hailu; Alamirew, Tena; Dzikiti, Sebinasi; Bewket, Woldeamlak; Zeleke, Gete; Schaffner, Urs
通讯作者	Shiferaw, H (corresponding author), Addis Ababa Univ, Water & Land Resource Ctr, POB 3880, Addis Ababa, Ethiopia.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	Dense impenetrable thickets of invasive trees and shrubs compete with other water users and thus disrupt ecosystem functioning and services. This study assessed water use by the evergreen Prosopis juliflora, one of the dominant invasive tree species in semi-arid and arid ecosystems in the tropical regions of Eastern Africa. The objectives of the study were to (1) analyze the seasonal water use patterns of P. juliflora in various locations in Afar Region, Ethiopia, (2) up-scale the water use from individual tree transpiration and stand evapotranspiration (ET) to the entire invaded area, and 3) estimate the monetary value of water lost due to the invasion. The sap flow rates of individual P. juliflora trees were measured using the heat ratio method while stand ET was quantified using the eddy covariance method. Transpiration by individual trees ranged from 1-36 L/day, with an average of 7 L of water per tree per day. The daily average transpiration of a Prosopis tree was about 3.4 (+/- 0.5) mm and the daily average ET of a dense Prosopis stand was about 3.7 (+/- 1.6) mm. Using a fractional cover map of P. juliflora (over an area of 1.18 million ha), water use of P. juliflora in Afar Region was estimated to be approximately 3.1-3.3 billion m(3)/yr. This volume of water would be sufficient to irrigate about 460,000 ha of cotton or 330,000 ha of sugar cane, the main crops in the area, which would generate an estimated net benefit of approximately US$ 320 million and US$ 470 million per growing season from cotton and sugarcane, respectively. Hence, P. juliflora invasion in the Afar Region has serious impacts on water availability and on the provision of other ecosystem services and ultimately on rural livelihoods.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000616809300008
WOS关键词	INVASIVE ALIEN PLANTS ; EDDY COVARIANCE ; EVAPOTRANSPIRATION ; GROUNDWATER ; VEGETATION ; PATTERNS ; TREES ; EVAPORATION ; HYDROLOGY ; MESQUITE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348200
作者单位	[Bewket, Woldeamlak] Addis Ababa Univ, Dept Geog & Environm Studies, POB 1176, Addis Ababa, Ethiopia; [Shiferaw, Hailu; Alamirew, Tena; Zeleke, Gete] Addis Ababa Univ, Water & Land Resource Ctr, POB 3880, Addis Ababa, Ethiopia; [Dzikiti, Sebinasi] CSIR Smart Pl Cluster, 11 Jan Cilliers St, ZA-7599 Stellenbosch, South Africa; [Schaffner, Urs] CABI, Rue Grillons 1, CH-2800 Delemont, Switzerland; [Dzikiti, Sebinasi] Univ Stellenbosch, Dept Hort Sci, P Bag X1 Matieland, ZA-7602 Stellenbosch, South Africa
推荐引用方式 GB/T 7714	Shiferaw, Hailu,Alamirew, Tena,Dzikiti, Sebinasi,et al. Water use of Prosopis juliflora and its impacts on catchment water budget and rural livelihoods in Afar Region, Ethiopia[J],2021,11(1).
APA	Shiferaw, Hailu,Alamirew, Tena,Dzikiti, Sebinasi,Bewket, Woldeamlak,Zeleke, Gete,&Schaffner, Urs.(2021).Water use of Prosopis juliflora and its impacts on catchment water budget and rural livelihoods in Afar Region, Ethiopia.SCIENTIFIC REPORTS,11(1).
MLA	Shiferaw, Hailu,et al."Water use of Prosopis juliflora and its impacts on catchment water budget and rural livelihoods in Afar Region, Ethiopia".SCIENTIFIC REPORTS 11.1(2021).