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| Titel |
Effect of land use and check dams on sediment yield and transport in Shejiagou Catchment (Loess Plateau, China) |
| VerfasserIn |
Debasish Pal, Honglei Tang, Stefano Galelli, Qihua Ran |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250147164
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| Publikation (Nr.) |
 EGU/EGU2017-11282.pdf |
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| Zusammenfassung |
| The understanding of soil erosion and sediment transport processes is a key step towards the
sustainable management of erosion-prone areas. This requires uncovering the interaction
between natural and anthropogenic processes—e.g., how land cover, sediment sources,
delivery routes and check dams affect the transport of sediments. In this work, we
use a spatially distributed model (WaTEM/SEDEM) to study the effect of land
use and check dams on soil erosion and sediment yield in Shejiagou Catchment, a
4.72 km2 area located in the Loess Plateau (China). The model is calibrated and
validated using available data on suspended sediments at the catchment outlet,
check dam locations, and 1975, 1986 and 2006 land use scenarios. Furthermore, we
carry out a sensitivity analysis to study the effect of different parameterizations
on WaTEM/SEDEM accuracy. We use the model to identify the critical sources
of sediments and to assess the role of check dams in retaining sediments within
the catchment. Preliminary results indicate that check dams can control sediment
transport significantly. Further investigation is required to study the accumulation of
sediments in check dams—a primary cause of dam maintenance costs and failures. |
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