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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Does sediment shortage cause river forestation? a numerical approach
Does sediment shortage cause river forestation? a numerical approach
Author : TAKASHI ASAEDA, H.L.K.SANJAYA
1. INTRODUCTION
Stony area is a typical landscape of the midstream riparian area providing a unique habitat for various pioneering species.
Flood disturbances are important processes to maintain the stony surface, where deposition and erosion occur
simultaneously. These disturbances are also helpful to create morphological changes in the riparian zone by washing off
trees and herbs (Asaeda et al., 2011). Erosion and depositions due to floods play an important role in nutrient dynamics in
rivers. However, as a result of various human induced processes such as river regulation, river diversion leads to
excessive growth of woody and herbaceous plants in riparian area (Asaeda and Rashid, 2012; Asaeda et al., 2014b).
They can trigger diminishing the typical stony landscape with pioneering species. Sediment intact with floods plays an
important role in determining the morphology and nutrient dynamics in rivers. Deposition of sediment requires a sufficient
stock of sediment in the river channel; hence the sediment mining from river channels is reduced the sediment deposition
which had before and prone to more erosion. Plenty of studies have been conducted to investigate the effect of deposition
and erosion on midstream river channel forestation, but the driving force is still questionable in particular occasions. In fact,
Dynamic Riparian Vegetation Model (DRIPVEM) has been built to understand the intact processes between soil nutrient
and vegetation colonization on river sediment bars (Asaeda et al., 2014a). In this study, we present the vegetation
colonization in relation to the sediment deposition and erosion with observed results comparing with simulated results
from a formulated vegetation model.
File Size : 836,410 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 13/08/2015
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