Records |
Author |
Illgen, M.; Ackermann, H. |
Title |
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Type |
Book Chapter |
Year |
2019 |
Publication |
Urban Flood Prevention: Technical and Institutional Aspects from Chinese and German Perspective |
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Volume |
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Issue |
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Pages |
173-193 |
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Abstract |
Today’s cities face the challenge of climate change adaptation worldwide. In this context, prevention of damage caused by flash floods plays an important role. This requires a cooperative pluvial flood risk management approach, which includes planning, technical, and administrative measures and involves preliminary flood risk analyses. This article outlines the main components of this risk management approach, which has proven its effectiveness in Europe. The recommendations formulated for this purpose are applicable or adaptable to regions with other constraints, such as China, for example. |
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Springer International Publishing |
Place of Publication |
Cham |
Editor |
Köster, S.; Reese, M.; Zuo, J.’e |
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978-3-030-01488-9 |
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THL @ christoph.kuells @ Illgen2019 |
Serial |
87 |
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Author |
Severi, A.; Masoudian, M.; Kordi, E.; Roettcher, K. |
Title |
Discharge coefficient of combined-free over-under flow on a cylindrical weir-gate |
Type |
Journal Article |
Year |
2015 |
Publication |
ISH Journal of Hydraulic Engineering |
Abbreviated Journal |
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Volume |
21 |
Issue |
1 |
Pages |
42-52 |
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Publisher |
Taylor & Francis |
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THL @ christoph.kuells @ doi:10.1080/09715010.2014.939503 |
Serial |
88 |
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Author |
de Jong, I.J.H.; Arif, S.S.; Gollapalli, P.K.R.; Neelam, P.; Nofal, E.R.; Reddy, K.Y.; Röttcher, K.; Zohrabi, N. |
Title |
Improving agricultural water productivity with a focus on rural transformation* |
Type |
Journal Article |
Year |
2021 |
Publication |
Irrigation and Drainage |
Abbreviated Journal |
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Volume |
70 |
Issue |
3 |
Pages |
458-469 |
Keywords |
irrigation efficiency, water productivity, rural transformation, efficacité de l’irrigation, productivité de l’eau, transformation rurale |
Abstract |
ABSTRACT As a result of population growth, economic development and climate change, feeding the world and providing water security will require important changes in the technologies, institutions, policies and incentives that drive present-day water management, as captured in Goal 6.4 of the Millennium Development Goals. Irrigation is the largest and most inefficient water user, and there is an expectation that even small improvements in agricultural water productivity will improve water security. This paper argues that improvements in irrigation water productivity involves a complex and comprehensive rural transformation that goes beyond mere promotion of water saving technologies. Many of the measures to improve water productivity require significant changes in the production systems of farmers and in the support provided to them. Looking forward, water use and competition over water are expected to further increase. By 2025, about 1.8 billion people will be living in regions or countries with absolute water scarcity. Demand for water will rise exponentially, while supply becomes more erratic and uncertain, prompting the need for significant shifts of inter-sectoral water allocation to support continued economic growth. Advances in the use of remote sensing technologies will make it increasingly possible to cost-effectively and accurately estimate crop evapotranspiration from farmers’ fields. |
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THL @ christoph.kuells @ https://doi.org/10.1002/ird.2451 |
Serial |
89 |
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Author |
Röttcher, K. |
Title |
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Type |
Book Chapter |
Year |
2018 |
Publication |
Risikomanagement und Nachhaltigkeit in der Wasserwirtschaft: Erfolgreiche Navigation durch die Komplexität und Dynamik des Risikos |
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Issue |
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Pages |
165-174 |
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Abstract |
Im vorliegenden Beitrag werden beispielhaft unterschiedliche Ansätze des Risikomanagements und das Verständnis von Nachhaltigkeit in der Wasserwirtschaft dargelegt. Die Darstellung richtet sich insbesondere an Leser aus anderen Fachdisziplinen, wie das Rechts- und Finanzwesen, den Fahrzeug- und Maschinenbau oder auch die sozialen Berufe. Die Zusammenhänge werden überblicksartig mit einzelnen konkreten Beispielen dargestellt mit dem Fokus auf die grundsätzlichen Denk- und Vorgehensweisen. |
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Springer Fachmedien Wiesbaden |
Place of Publication |
Wiesbaden |
Editor |
Michalke, A.; Rambke, M.; Zeranski, S. |
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978-3-658-19684-4 |
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THL @ christoph.kuells @ Röttcher2018 |
Serial |
90 |
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Author |
Stone, A.E.C.; Edmunds, W.M. |
Title |
Naturally-high nitrate in unsaturated zone sand dunes above the Stampriet Basin, Namibia |
Type |
Journal Article |
Year |
2014 |
Publication |
Journal of Arid Environments |
Abbreviated Journal |
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Volume |
105 |
Issue |
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Pages |
41-51 |
Keywords |
Kalahari, Namibia, Nitrate in the unsaturated zone, Stampriet Basin, Transboundary basin, Unsaturated zone recharge |
Abstract |
Elevated groundwater nitrate levels are common in drylands, often in excess of WHO guidelines, with concern for human and animal health. In light of recent attempts to identify nitrate sources in the Kalahari this paper presents the first unsaturated zone (USZ) nitrate profiles and recharge rate estimates for the important transboundary Stampriet Basin, alongside the first rainfall chemistry records. Elevated subsurface nitrate reaches 100–250 and 250–525 mg/L NO3–N, with NO3–N/Cl of 4–12, indicating input above evapotranspiration. Chloride mass balance recharge rates range from 4 to 27 mm/y, indicating a vertical movement of these nitrate pulses toward the water table over multi-decadal timescales. These profiles are sampled from dune crests, away from high concentrations of animals and without termite mounds. Given low-density animal grazing is unlikely to contribute consistent spot-scale nitrate over decades, these profiles give an initial estimate of naturally-produced concentrations. This insight is important for the management of the Stampriet Basin and wider Kalahari groundwater. This study expands our knowledge about elevated nitrate in dryland USZs, demonstrating that it can occur as pulses, probably in response to transient vegetation cover and that it is not limited to long-residence time USZs with very limited downward moisture flux (recharge). |
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0140-1963 |
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THL @ christoph.kuells @ stone_naturally-high_2014 |
Serial |
91 |
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