Sand dams for sustainable water management: Challenges and future opportunities.

Autor: Castelli G; Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, Italy. Electronic address: giulio.castelli@unifi.it., Piemontese L; Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, Italy., Quinn R; Department of Civil and Structural Engineering, The University of Sheffield, United Kingdom; Department of Civil Engineering and Construction, Atlantic Technological University, Sligo, Ireland., Aerts J; Institute for Environmental Studies (IVM), VU University Amsterdam, the Netherlands., Elsner P; Department of Geography, Birkbeck, University of London, United Kingdom., Ertsen M; Water Resources, Faculty of Civil Engineering and Geosciences, Delft University of Technology, the Netherlands., Hussey S; Dabane Trust Water Workshops, Bulawayo, Zimbabwe., Filho WL; Department of Natural Sciences, Manchester Metropolitan University, United Kingdom., Limones N; Department of Physical Geography and Regional Geographic Analysis, Universidad de Sevilla, Spain., Mpofu B; Dabane Trust Water Workshops, Bulawayo, Zimbabwe., Neufeld DG; Department of Biology, Eastern Mennonite University, Harrisonburg, VA, USA., Ngugi K; Green Developments (GDFV), Kenya., Ngwenya N; Dabane Trust Water Workshops, Bulawayo, Zimbabwe., Parker A; Cranfield Water Science Institute, Cranfield University, United Kingdom., Ryan C; Department of Environmental Science, Auckland University of Technology, New Zealand., de Trincheria J; Institute of Wastewater Management and Water Protection, Hamburg University of Technology, Germany., Villani L; Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, Italy; Hydrology and Hydraulic Engineering Department, Vrije Universiteit Brussels (VUB), Belgium., Eisma J; Department of Civil Engineering, University of Texas at Arlington, USA., Bresci E; Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, Italy.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Sep 10; Vol. 838 (Pt 2), pp. 156126. Date of Electronic Publication: 2022 May 20.
DOI: 10.1016/j.scitotenv.2022.156126
Abstrakt: Sand dams are impermeable water harvesting structures built to collect and store water within the volume of sediments transported by ephemeral rivers. The artificial sandy aquifer created by the sand dam reduces evaporation losses relative to surface water storage in traditional dams. Recent years have seen a renaissance of studies on sand dams as an effective water scarcity adaptation strategy for drylands. However, many aspects of their functioning and effectiveness are still unclear. Literature reviews have pointed to a range of research gaps that need further scientific attention, such as river corridors and network dynamics, watershed-scale impacts, and interaction with social dynamics. However, the scattered and partially incomplete information across the different reviews would benefit from an integrated framework for directing future research efforts. This paper is a collaborative effort of different research groups active on sand dams and stems from the need to channel future research efforts on this topic in a thorough and coherent way. We synthesize the pivotal research gaps of a) unclear definition of "functioning" sand dams, b) lack of methodologies for watershed-scale analysis, c) neglect of social aspects in sand dam research, and d) underreported impacts of sand dams. We then propose framing future research to better target the synthesized gaps, including using the social-ecological systems framework to better capture the interconnected social and biophysical research gaps on sand dams, fully utilizing the potential of remote sensing in large-scale studies and collecting sand dam cases across the world to create an extensive database to advance evidence-based research on sand dams.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Luigi Piemontese reports financial support was provided by Camões - Instituto da Cooperação e da Língua.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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