干旱区生态环境知识资源中心(Arid): Water abstraction of invasive Prosopis juliflora and native Senegalia senegal trees: A comparative study in the Great Rift Valley Area, Ethiopia

Arid

DOI	10.1016/j.scitotenv.2022.160833
	Water abstraction of invasive Prosopis juliflora and native Senegalia senegal trees: A comparative study in the Great Rift Valley Area, Ethiopia
	Shiferaw, Hailu; Alamirew, Tena; Dzikiti, Sebinasi; Bewket, Woldeamlak; Zeleke, Gete; Teketay, Demel; Schaffner, Urs
通讯作者	Shiferaw, H
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	862
英文摘要	Besides direct water abstraction, natural water scarcity in semi-arid and arid regions may be further exacerbated by human-assisted changes in vegetation composition, including the invasion by non-native plant species. Water abstrac-tion by the invasive tree Prosopis juliflora and by the native Senegalia senegal was compared in the dry Great Rift Valley, Ethiopia. Transpiration rates were quantified using the heat ratio method on six trees each of P. julifora and S. senegal, growing adjacent to each other in the same environment. Water use for P. juliflora trees ranges from 1 to 26 L/day (an average of 4.74 +/- 1.97), and that of S. senegal trees from 1 to 38 L/day (an average of 5.48 +/- 5.29 during two study years). For both species, soil heat, latent heat, and soil moisture status influenced the rates of sap flow of trees; in ad-dition, water use by P. juliflora trees was related to vapor pressure deficit; the higher the vapor pressure deficit, the higher the water abstraction by P. juliflora. Stand densities of pure P. juliflora and S. senegal were 1200-1600 trees and 400-600 trees per ha, respectively. At the stand scale, P. juliflora consumed approximately 6636 L/day/ha (tran-spiration: 242 mm per year) and S. senegal stands consumed 2723 L/day/ha (transpiration: 87 mm per year). That is, P. juliflora stands consumed three times more water than S. senegal stands, because of two reasons: (1) P. juliflora stands are denser than S. senegal stands, and denser stands consume more water than less dense stands, and (2) P. juliflora is evergreen and uses water all year-round, while S. senegal sheds its leaves during the peak dry seasons. Our findings suggest that, compared to S. senegal, P. juliflora invasion results in severe impacts on groundwater resources of the drylands of Ethiopia, with direct and indirect consequences to ecosystem services and rural livelihoods.
英文关键词	Dryland Invasive species Sap flow Transpiration Tropical region Water use
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000916127100001
WOS关键词	EDDY COVARIANCE ; ALIEN PLANTS ; RIPARIAN ; EVAPOTRANSPIRATION ; GROUNDWATER ; EVAPORATION ; CHALLENGES ; CATCHMENT ; DYNAMICS ; PATTERNS
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/2XILL650/398493
推荐引用方式 GB/T 7714	Shiferaw, Hailu,Alamirew, Tena,Dzikiti, Sebinasi,et al. Water abstraction of invasive Prosopis juliflora and native Senegalia senegal trees: A comparative study in the Great Rift Valley Area, Ethiopia[J],2023,862.
APA	Shiferaw, Hailu.,Alamirew, Tena.,Dzikiti, Sebinasi.,Bewket, Woldeamlak.,Zeleke, Gete.,...&Schaffner, Urs.(2023).Water abstraction of invasive Prosopis juliflora and native Senegalia senegal trees: A comparative study in the Great Rift Valley Area, Ethiopia.SCIENCE OF THE TOTAL ENVIRONMENT,862.
MLA	Shiferaw, Hailu,et al."Water abstraction of invasive Prosopis juliflora and native Senegalia senegal trees: A comparative study in the Great Rift Valley Area, Ethiopia".SCIENCE OF THE TOTAL ENVIRONMENT 862(2023).