TITLE:
Modeling of Deposition Process of Particulate Organic Matter (POM) with Sand on Vegetated Area in a River
AUTHORS:
Makiko Obana, Ho-Seong Jeon, Tetsuro Tsujimoto
KEYWORDS:
Modeling, Deposition Process, Particulate Organic Matter (POM), Sand, Vegetated Area
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.6 No.14,
October
20,
2014
ABSTRACT: The
transport and deposition of particulate organic matter (POM) in river streams
has recently received much attention as one of important ecological processes
in rivers. We focused on interacted behaviors of sand particles in bed load and
POM in vegetated area on sand bars. The purpose of this study is to clarify the
characteristics of deposition of POM with bed load on sandbars with the riparian
vegetation. A basic experiment on POM transport and deposition with vegetation
is conducted in a laboratory flume. It demonstrates that several issues still
remain to be future investigated. In particular, the shear due to the bed
roughness in the vegetated area and the transport and deposition process of
sand particles and POM are required to be described by the proper modeling
which will be introduced into a simulation model of various fluvial processes. The
main results of this study are that ripples are formed by bed load in riparian
vegetation and POM deposition is promoted by ripple behavior. Based on these
results, the POM deposition with ripples in vegetated area is described by a
conceptual model which will affect various aspects in ecosystem management
based on fluvial processes.