Application and assessment of a dynamic riparian vegetation model to predict the spatial distribution of vegetation in two Japanese river systems

The ecological dynamics of riparian areas interact with sediment transport in river systems, which plays an active role in riparian vegetation growth in the floodplain. The fluvial dynamics, hydraulics, hydro-meteorological and geomorphological characteristics of rivers are associated with sediment transport in river systems and around the riparian area. The flood disturbance, sediment with nutrients and seeds transported by river, sediment deposition, and erosion phenomena in the floodplain change the bare land area to vegetation area and vice versa. The difference in riparian vegetation area in the river floodplain is dependent on the sediment grain size distribution which is deposited in the river floodplain. Mathematical models describing vegetation growth in a short period exist in literature, but long-term modelling and validations are still lacking. In order to cover long-term vegetation growth modelling, a Dynamic Riparian Vegetation Model (DRIPVEM) was proposed. This paper highlights the existing modelling technique of DRIPVEM coupled with a Dynamic Herbaceous Model used to establish the interactive relationship of sediment grain sizes and riparian vegetation in the floodplain.

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The effect of reed beds distributions on the Ecohydraulic dynamics of wetlands and lowlands: experimental analyses and simulations

10.5194/egusphere-egu21-558 ◽

2021 ◽

Author(s):

Giuseppe Francesco Cesare Lama

Keyword(s):

Water Quality ◽

Spatial Distribution ◽

Riparian Vegetation ◽

Vegetation Index ◽

Normalized Difference Vegetation Index ◽

Terrestrial Ecosystems ◽

Water Bodies ◽

Area Index ◽

Reed Beds ◽

Riparian Species

<p>The interplay between riparian vegetation and water flow in vegetated water bodies has a key role in the dynamic evolution of aquatic and terrestrial ecosystems in wetlands and lowlands. The present study analyzes the effects of the spatial distribution of reed (<em>Phragmites australis</em> (Cav.) Trin. ex Steud.) beds, an invasive riparian species extremely widespread in wetland and lowlands worldwide, on the main hydraulic and hydrodynamic properties of an abandoned vegetated reclamation channel located in Northern Tuscany, Italy. A field campaign was carried out to obtain Leaf Area Index (LAI) and Normalized Difference Vegetation Index (NDVI) of reed beds through both ground-based and Unmanned Aerial Vehicle (UAV) methodologies, and to correlate them to the channel&#8217;s flow dynamic and water quality main features. Then, Hydrodynamic simulations of the vegetated reclamation channel were performed and validated based on the experimental measurements of the hydraulic and vegetational parameters acquired in the field to build up a robust model to be employed also in future Ecohydraulic researches. The evidences of this study constitute useful insights in the quantitative analysis of the correlation between the spatial distribution of riparian vegetation stands in natural and manmade vegetated water bodies and their hydrodynamic and water quality main features.</p>

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RIPARIAN VEGETATION CLASSIFICATION USING THE DYNAMIC RIPARIAN VEGETATION MODEL

10.3850/38wc092019-0989 ◽

2019 ◽

Author(s):

TAKASHI ASAEDA ◽

BHAGYA NALLAPERUMA ◽

MAHENDRA B BANIYA ◽

SENAVIRATHNA MDH JAYASHANKA

Keyword(s):

Riparian Vegetation ◽

Vegetation Classification ◽

Vegetation Model

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Timber sheet pile-vegetation model for stream bank retaining structure

E3S Web of Conferences ◽

10.1051/e3sconf/20199212013 ◽

2019 ◽

Vol 92 ◽

pp. 12013 ◽

Cited By ~ 1

Author(s):

Abhijith Kamath ◽

Wolfgang Gard ◽

Jan-Willem Van de Kuilen

Keyword(s):

Riparian Vegetation ◽

Root Systems ◽

Physical Parameters ◽

Preliminary Estimate ◽

Sheet Pile ◽

Vegetation Model ◽

Mechanical Reinforcement ◽

Retaining Structures ◽

Retaining Structure ◽

Stream Bank

Timber sheet piles are widely used to protect canal and stream banks. Quite often, riparian vegetation also grows along these retaining structures. Roots of riparian vegetation mechanically reinforce the soil with their root systems. A timber sheetpile- vegetation model is developed taking into account the mechanical reinforcement of the vegetation roots. The model uses easy to obtain physical parameters, which makes it suitable to have a preliminary estimate of how the forces on the bio engineered structure would evolve.

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Calibrating a Riparian Vegetation Model for Sacramento River Studies

World Environmental and Water Resources Congress 2012 ◽

10.1061/9780784412312.124 ◽

2012 ◽

Cited By ~ 1

Author(s):

Blair Greimann ◽

Lisa M. Fotherby

Keyword(s):

Riparian Vegetation ◽

Sacramento River ◽

Vegetation Model

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Assessing the performance of a riparian vegetation model in a river with a low slope and fine sediment

Environmental Technology ◽

10.1080/09593330.2016.1199600 ◽

2016 ◽

Vol 38 (5) ◽

pp. 517-528 ◽

Cited By ~ 7

Author(s):

Kelum Sanjaya ◽

Takashi Asaeda

Keyword(s):

Riparian Vegetation ◽

Fine Sediment ◽

Vegetation Model

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Monitoring of riparian vegetation response to flood disturbances using terrestrial photography

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-11-3359-2014 ◽

2014 ◽

Vol 11 (3) ◽

pp. 3359-3385

Author(s):

K. Džubáková ◽

P. Molnar ◽

K. Schindler ◽

M. Trizna

Keyword(s):

Spatial Distribution ◽

Riparian Vegetation ◽

Vegetation Indices ◽

Transitional Zone ◽

Vegetation Response ◽

Flood Disturbance ◽

Surface Wetness ◽

River Floodplains ◽

Variable Surface ◽

Short Period

Abstract. The distribution of riparian vegetation on river floodplains is strongly impacted by floods. In this study we use a new setup with high resolution ground-based cameras in an Alpine gravel bed braided river to quantify the immediate response of riparian vegetation to flood disturbance with the use of vegetation indices. Five largest floods with return periods between 1.4 and 20.1 years in the period 2008–2011 in the Maggia River were used to evaluate patterns of vegetation response in three distinct floodplain units (main bar, secondary bar, transitional zone) and to compare seven vegetation indices. The results show both negative (damage) and positive (enhancement) response of vegetation in a short period following floods, with a selective impact based on the hydrogeomorphological setting and the intensity of the flood forcing. The spatial distribution of vegetation damage provides a coherent picture of floodplain response in the three floodplain units with different flood stress. We show that the tested vegetation indices generally agree on the direction of predicted change and its spatial distribution. The average disagreement between indices was in the range 14.4–24.9% despite the complex environment, i.e. highly variable surface wetness, high gravel reflectance, extensive water–soil–vegetation contact zones. We conclude that immediate vegetation response to flood disturbance may be effectively monitored by terrestrial photography with potential for long-term assessment in river management and restoration projects.

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