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A platform for research: civil engineering, architecture and urbanism
Effect of Check Dams on Sediment Connectivity
Check dams are widespread torrent control structures traditionally used to manage sediment transport and channel morphodynamics in mountain catchments. We present some examples of direct influence of these artificial structures on bed sediments and coarse sediment fluxes under the framework of sediment (dis)connectivity. We summarized that these protection measures may have different and sometimes contradictory impacts on the longitudinal, lateral, and vertical dimensions of sediment (dis)connectivity. Although check dams are usually designed to decrease overall bed load transport rates, their presence can, under specific circumstances, lead to acceleration of downstream sediment movement. Also the temporal scale is important, when complete filling of sedimentary wedges of retention check dams or gradual destruction of old torrent control works may lead to (at least partial) restoration of coarse sediment connectivity in the catchment. Finally, some implications for sustainable stream management related to loss of habitat heterogeneity or bed pavement are discussed.
Effect of Check Dams on Sediment Connectivity
Check dams are widespread torrent control structures traditionally used to manage sediment transport and channel morphodynamics in mountain catchments. We present some examples of direct influence of these artificial structures on bed sediments and coarse sediment fluxes under the framework of sediment (dis)connectivity. We summarized that these protection measures may have different and sometimes contradictory impacts on the longitudinal, lateral, and vertical dimensions of sediment (dis)connectivity. Although check dams are usually designed to decrease overall bed load transport rates, their presence can, under specific circumstances, lead to acceleration of downstream sediment movement. Also the temporal scale is important, when complete filling of sedimentary wedges of retention check dams or gradual destruction of old torrent control works may lead to (at least partial) restoration of coarse sediment connectivity in the catchment. Finally, some implications for sustainable stream management related to loss of habitat heterogeneity or bed pavement are discussed.
Effect of Check Dams on Sediment Connectivity
Li, Zhanbin (editor) / Li, Peng (editor) / Yu, Yang (editor) / Shi, Peng (editor) / Piton, Guillaume (editor) / Galia, Tomáš (author) / Škarpich, Václav (author) / Smažák, Ivan (author)
2022-08-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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