Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 443427
Title Linking landscape morphological complexity and sediment connectivity
Author(s) Baartman, J.E.M.; Masselink, R.; Temme, A.J.A.M.; Keesstra, S.D.
Source Earth Surface Processes and Landforms 38 (2013)12. - ISSN 0197-9337 - p. 1457 - 1471.
DOI http://dx.doi.org/10.1002/esp.3434
Department(s) Soil Physics and Land Management
Soil Geography and Landscape
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) drainage-basin evolution - small alpine catchments - land-use change - hydrological connectivity - surface-roughness - delivery problem - mesoscale catchment - riparian vegetation - fluvial dynamics - cellular-model
Abstract Connectivity relates to the coupling of landforms (e.g. hillslopes and channels) and the transfer of water and sediment between them. The degree to which parts of a catchment are connected depends largely on the morphological complexity of the catchment's landscape. Landscapes can have very different and distinct morphologies, such as terraces, V-shaped valleys or broad floodplains. The objective of this study is to better understand and quantify the relation between landscape complexity and catchment connectivity. We hypothesize that connectivity decreases with increasing landscape morphological complexity. To quantify the connectivity–complexity relationship virtual digital elevation models (DEMs) with distinct morphologies were used as inputs into the landscape evolution model LAPSUS to simulate the sediment connectivity of each landscape. Additionally, the hypothesis was tested on six common real DEMs with widely different morphologies. Finally, the effects of different rainfall time series on catchment response were explored. Simulation results confirm the hypothesis and quantify the non-linear relation. Results from the exploration of sediment connectivity in response to sequences of rainfall events indicate that feedback between erosion and deposition are more important for certain landscape morphologies than for others: for a given rainfall input, a more effective sediment connectivity and erosion response may be expected from rolling or V-shaped catchments than from dissected or stepped landscapes. Awareness of the differences in the behaviour and response of different morphologies to catchment processes provides valuable information for the effective management of landscapes and ecosystems through efficiently designed soil and water conservation measures
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