Modelling of nutrient dynamics and vegetation succession in midstream sediment bars of a regulated river

In the floodplain of a regulated river with an intermittent flood disturbance, nutrient dynamics is mainly dependent on the successional stage of vegetation, types of flora and initial substrate conditions brought about by a previous large flood. In this study, we collected data on plant and substra...

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Bibliographic Details
Published in:International journal of river basin management 2014-04, Vol.12 (2), p.123-133
Main Authors: Asaeda, Takashi, Rashid, MD H.
Format: Article
Language:English
Subjects:
Dynamics
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Floods
Freshwater
Hydrology
Hydrology. Hydrogeology
Mathematical models
Natural hazards: prediction, damages, etc
Nitrogen
Nutrients
Plants (organisms)
Rivers
Robinia pseudoacacia
Salix spp
Sediments
sky-view factor
soil particle size
Vegetation
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Summary:In the floodplain of a regulated river with an intermittent flood disturbance, nutrient dynamics is mainly dependent on the successional stage of vegetation, types of flora and initial substrate conditions brought about by a previous large flood. In this study, we collected data on plant and substrate parameters from a gravelly bar of a regulated river in Japan and developed nutrient dynamic and vegetative succession models on the basis of allometric relationships between observed data. The models were validated with field observed data from the Ara and Kurobe Rivers of Japan. We obtained satisfactory agreements between observed and simulated results. The developed models can predict the progressive vegetative biomass and amount of nutrients processed by herbaceous plants and trees on a sediment bar during large flood intervals.
ISSN:1571-5124
1814-2060
DOI:10.1080/15715124.2014.902377