气候变化领域集成服务门户(CCPortal): Developing a model to assess the impact of farm dams and irrigation for data-scarce catchments

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DOI	10.1080/02626667.2024.2331790
	Developing a model to assess the impact of farm dams and irrigation for data-scarce catchments
	Watson, Andrew; Kuenne, Annika; Birkel, Christian; Miller, Jodie; Kralisch, Sven
发表日期	2024
ISSN	0262-6667
EISSN	2150-3435
起始页码	69
结束页码	5
卷号	69 期号:5
英文摘要	Productive agricultural supply chains require the support of functional ecosystems, but intense agricultural practices change local hydrological systems (e.g. river diversion). In this study, the impact of farm dams was assessed for the Verlorenvlei catchment, a sensitive ecosystem currently under a state of hydrological change in South Africa. We developed a new module for the Jena Adaptable Modelling System (JAMS)/J2000 rainfall-runoff model to assess the streamflow impact from the points of abstraction, losses during storage and irrigation. The model achieved a satisfactory streamflow calibration with efficiencies Nash Sutcliffe Efficiency (NSE, logNSE) of 0.52 and 0.51. The irrigated area reduced simulated streamflow by 12 to 19%. The results from the study agree with remote sensed evapotranspiration, measured lake surface water levels and streamflow, but uncertainty remains in the total simulated am evaporation. While many catchments lack the data required for a detailed irrigation impact assessment, this approach considers total water use, dam storage to area relationships and general farming practices.
英文关键词	Irrigation; rainfall-runoff modelling; JAMS/J2000; hydrological change; South Africa
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:001203844700001
来源期刊	HYDROLOGICAL SCIENCES JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293414
作者单位	Stellenbosch University; Friedrich Schiller University of Jena; Universidad Costa Rica; International Atomic Energy Agency
推荐引用方式 GB/T 7714	Watson, Andrew,Kuenne, Annika,Birkel, Christian,et al. Developing a model to assess the impact of farm dams and irrigation for data-scarce catchments[J],2024,69(5).
APA	Watson, Andrew,Kuenne, Annika,Birkel, Christian,Miller, Jodie,&Kralisch, Sven.(2024).Developing a model to assess the impact of farm dams and irrigation for data-scarce catchments.HYDROLOGICAL SCIENCES JOURNAL,69(5).
MLA	Watson, Andrew,et al."Developing a model to assess the impact of farm dams and irrigation for data-scarce catchments".HYDROLOGICAL SCIENCES JOURNAL 69.5(2024).