- author = "Martin Josephus Baptist",
- title = "Modelling floodplain biogeomorphology",
- school = "Technische Universiteit Delft",
- year = "2005",
- address = "Holland",
- month = "18 " # apr,
- publisher = "Delft University Press",
- ISBN = "90-407-2582-9",
- keywords = "genetic algorithms, genetic programming, biogeomorphology, flood management, hydraulic modelling, nature management, hydraulic roughness, river morphology, bed shear stress, floodplain vegetation",
-
URL = "
https://repository.tudelft.nl/islandora/object/uuid%3Ab2739720-e2f6-40e2-b55f-1560f434cbee",
-
URL = "
http://repository.tudelft.nl/assets/uuid...e2f6.../ceg_baptist_20050418.pdf",
- size = "213 pages",
-
abstract = "There is an increasing awareness that rivers need more
room in order to safeguard flood safety under climate
change conditions. Contemporary river management is
creating room in the floodplains and allowing, within
certain bounds, natural processes of sedimentation and
erosion. One of the aims is to restore dynamic
conditions, so as to get a sustainable and more diverse
river ecosystem that can cope with floods. This new
approach requires understanding of the interaction
between the biotic and abiotic components of river
systems. More specifically, it requires a better
understanding of the interaction between flora and
fauna and geomorphological factors. This is the object
of investigation of the interdiscipline of
biogeomorphology. Modelling biogeomorphological
processes in river floodplains is the topic of this
thesis.
To reduce flood risks in the Netherlands, measures to increase the flood conveyance capacity of the Rhine River will be implemented. However, it is expected that floodplain sedimentation and softwood forest development in rehabilitated floodplains will gradually reduce the conveyance capacity and the biodiversity. Moreover, in regulated rivers, such as the Rhine River, erosion and sedimentation processes caused by channel migration, which periodically interrupt vegetation succession, cannot be allowed. Therefore, a floodplain management strategy was proposed that would meet both flood protection and nature rehabilitation objectives. This strategy, 'Cyclic Floodplain Rejuvenation (CFR)', aims at mimicking the effects of channel migration by removal of softwood forests, by lowering floodplains or by (re)constructing secondary channels. In chapter 2, the effects of CFR measures on reducing flood levels and enhancing biodiversity along the Waal River were assessed. A one-dimensional hydraulic modelling system, SOBEK, was applied together with rule-based models for floodplain vegetation succession and floodplain sedimentation. The model simulations demonstrated that the flood management strategy of Cyclic Floodplain Rejuvenation is able to sustain safe flood levels in the Waal River. Rejuvenation is then needed every 25 to 35 years on average, each time in an area of about 15percent of the total floodplain area. The rejuvenation strategy led to a diverse floodplain vegetation distribution that largely complies to the historical reference for the Waal River. Cyclic Floodplain Rejuvenation may be the appropriate answer to find symbiosis between flood protection and nature rehabilitation in highly regulated rivers.
...",
-
notes = "In English.
Supervisor H.J. de Vriend",
