气候变化领域集成服务门户(CCPortal): Quantifying human impacts on hydrological drought using a combined modelling approach in a tropical river basin in central Vietnam

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DOI	10.5194/hess-22-547-2018
	Quantifying human impacts on hydrological drought using a combined modelling approach in a tropical river basin in central Vietnam
	Firoz A.B.M.; Nauditt A.; Fink M.; Ribbe L.
发表日期	2018
ISSN	1027-5606
起始页码	547
结束页码	565
卷号	22 期号:1
英文摘要	Hydrological droughts are one of the most damaging disasters in terms of economic loss in central Vietnam and other regions of South-east Asia, severely affecting agricultural production and drinking water supply. Their increasing frequency and severity can be attributed to extended dry spells and increasing water abstractions for e.g. irrigation and hydropower development to meet the demand of dynamic socioeconomic development. Based on hydro-climatic data for the period from 1980 to 2013 and reservoir operation data, the impacts of recent hydropower development and other alterations of the hydrological network on downstream streamflow and drought risk were assessed for a mesoscale basin of steep topography in central Vietnam, the Vu Gia Thu Bon (VGTB) River basin. The Just Another Modelling System (JAMS)/J2000 was calibrated for the VGTB River basin to simulate reservoir inflow and the naturalized discharge time series for the downstream gauging stations. The HEC-ResSim reservoir operation model simulated reservoir outflow from eight major hydropower stations as well as the reconstructed streamflow for the main river branches Vu Gia and Thu Bon. Drought duration, severity, and frequency were analysed for different timescales for the naturalized and reconstructed streamflow by applying the daily varying threshold method. Efficiency statistics for both models show good results. A strong impact of reservoir operation on downstream discharge at the daily, monthly, seasonal, and annual scales was detected for four discharge stations relevant for downstream water allocation. We found a stronger hydrological drought risk for the Vu Gia river supplying water to the city of Da Nang and large irrigation systems especially in the dry season. We conclude that the calibrated model set-up provides a valuable tool to quantify the different origins of drought to support cross-sectorial water management and planning in a suitable way to be transferred to similar river basins. © 2018 Author(s).
语种	英语
scopus关键词	Agriculture; Drought; Hydroelectric power; Hydroelectric power plants; Irrigation; Losses; Potable water; Risk assessment; Rivers; Stream flow; Water; Water management; Water resources; Water supply; Watersheds; Agricultural productions; Hydro-power development; Hydrological droughts; Hydropower stations; Irrigation systems; Reservoir operation; Reservoir outflows; Socio-economic development; Reservoirs (water); anthropogenic effect; drought; dry season; environmental impact assessment; hydrological hazard; hydrological modeling; inflow; quantitative analysis; reservoir; river basin; river discharge; socioeconomic impact; streamflow; tropical environment; Da Nang; Viet Nam
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160140
作者单位	Firoz, A.B.M., Institute for Technology and Resources Management in the Tropics and Subtropics (ITT), TH Köln, Cologne, 50679, Germany; Nauditt, A., Institute for Technology and Resources Management in the Tropics and Subtropics (ITT), TH Köln, Cologne, 50679, Germany; Fink, M., Department of Geographic Information Science, Department of Geography, Friedrich Schiller University Jena, Jena, 07743, Germany; Ribbe, L., Institute for Technology and Resources Management in the Tropics and Subtropics (ITT), TH Köln, Cologne, 50679, Germany
推荐引用方式 GB/T 7714	Firoz A.B.M.,Nauditt A.,Fink M.,et al. Quantifying human impacts on hydrological drought using a combined modelling approach in a tropical river basin in central Vietnam[J],2018,22(1).
APA	Firoz A.B.M.,Nauditt A.,Fink M.,&Ribbe L..(2018).Quantifying human impacts on hydrological drought using a combined modelling approach in a tropical river basin in central Vietnam.Hydrology and Earth System Sciences,22(1).
MLA	Firoz A.B.M.,et al."Quantifying human impacts on hydrological drought using a combined modelling approach in a tropical river basin in central Vietnam".Hydrology and Earth System Sciences 22.1(2018).