Estimation of Vegetation Removal by Aerial Photograph Analysis and Flood Flow Simulation


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Abstract


This study purposes to estimate the spatial distribution of vegetation removal on a gravel bed and braided river, called the Tenryu in Central Japan. Aerial photograph and flood flow simulation are used to observe the vegetation change. Frequent changes of river width, bed level, bar areas indicate that it is an active river geomorphologically. High magnitudes of flood flow have direct impacts on bar area changes and vegetation dynamics. High discharge and less vegetation in the bar area produced extensive land erosion in the year 1990. High annual flood flow promotes vegetation removal and low flood flow in the preceding year accelerates vegetation invasion. Numerical simulation of flood flow can estimate the spatial conditions of vegetation wash out or vegetation remaining with minor misjudgment. Inclusion of sediment transport equation in the simulation may reduce the misjudgment during computation
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Keywords


Flood Flow; Vegetation Invasion; Vegetation Destruction; Bed Shear Stress; Drag Force

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References


J. Naiman, H. Decamps, The ecology of interfaces: Riparian zones, Annual Review of Ecological System, Vol. 28: 621– 658, 1997.
http://dx.doi.org/10.1146/annurev.ecolsys.28.1.621

C. Hupp, Hydrology, geomorphology and vegetation of coastal plain rivers in the south-eastern USA, Hydrological Processes, Vol. 14: 2991 – 3010, 2000.
http://dx.doi.org/10.1002/1099-1085(200011/12)14:16/17%3C2991::aid-hyp131%3E3.0.co;2-h

J. Bendix, C. Hupp, Hydrological and geomorphological impacts on riparian plant communities, Hydrological Processes, Vol. 14: 2977– 2990, 2000.
http://dx.doi.org/10.1002/1099-1085(200011/12)14:16/17%3C2977::aid-hyp130%3E3.0.co;2-4

B. Abernethy, I. Rutherfurd, Where along a river’s length will vegetation most effectively stabilise stream banks?, Geomorphology, Vol. 23: 55– 75, 1998.
http://dx.doi.org/10.1016/s0169-555x(97)00089-5

T. Tsujimoto, Fluvial process in streams with vegetation. Journal of Hydraulic Research, IAHR, Vol. 4(Issue 6): 789-803, 1999.
http://dx.doi.org/10.1080/00221689909498512

C. Hupp, W. Osterkamp, Riparian vegetation and fluvial geomorphic processes, Geomorphology, Vol. 14: 277–295, 1996.
http://dx.doi.org/10.1016/0169-555x(95)00042-4

W. Cowan, Estimating hydraulic roughness coefficients, Agricultural Engineering, Vol. 37: 473–475, 1956.

C. Thorne, Effects of vegetation on riverbank erosion and stability. In Vegetation and Erosion, Thornes JB (ed), John Wiley & Sons; 125–144, 1990.

M. Van De Wiel, M.. Darby, A new model to analyse the impact of woody riparian vegetation on the geotechnical stability of riverbanks, Earth Surfaces Processes and Landforms Vol. 32(Issue 14): 2185–2198, 2007.
http://dx.doi.org/10.1002/esp.1522

P. Sandercock, J. Hooke, J. Mant, Vegetation in dryland river channels and its interaction with fluvial processes, Progress in Physical Geography, Vol. 41: 107–129, 2007.
http://dx.doi.org/10.1177/0309133307076106

H. Lee, K. Yamamoto, Y. Shimatani , Y. Kayaba, Investigation into the impact of morphologic and hydraulic characteristics on in-channel vegetation in the Tamagawa River, Environmental System Research, VOl. 24: 26–33 (in Japanese with English abstract), 1996.
http://dx.doi.org/10.2208/proer1988.24.26

M. Kamada, Y. Ohta, T. Okabe, Interrelation between tree distribution in river and environmental change of basin due to human activity. Proceedings of International Symposium— Interpraevent 2: 245–252, 1996.

J. Yagisawa, and N. Tanaka, Differences of tree-breaking pattern and breaking moment by floods with different tree age and substrate condition under two flood disturbances, International Conference on Hydro-Science and Engineering, Vol. 8, pp. 473-474, Nagoya, Japan, 2008.

T. Tsujimoto, and A. Teramoto, Transitional Change in Vegetation and Bar-Morphology -Comparison Between Gravel-Bed River and Sandy River, The International Conference on Hydro-Science and -Engineering, Vol. 6, pp. 1-9, Hamburg, Germany, 1999.

D. Islam, Y. Toda, T. Furukawa, T. Tsujimoto, Long term trend and removal condition of riparian vegetation in gravel and braided river- case of downstream reach of Tenryu river, (2012) International Review of Civil Engineering (IRECE), (3) 6, pp. 463-473.

F. Charlton, P. Brown, R. Benson, The hydraulic geometry of some gravel rivers in Britain, Hydraulic Research Station Report IHT 180, Hydraulics Research Station, Wallingford, 1978.

C. Clifton, Effects of vegetation and land-use on channel morphology, in Greswell, R. E., 1989.

Y. Toda, S. Ikeda, K. Kumagai, and T. Asano, Effects of Flood Flow on Flood Plain Soil and Riparian Vegetation in a Gravel River, Journal of Hydraulic Engineering, Vol. 131(Issue 11): 950-960, 2005.
http://dx.doi.org/10.1061/(asce)0733-9429(2005)131:11(950)

S. Ikeda, N. Izumi, and R. Ito, Effects of pile dikes on flow retardation and sediment transport, Journal of Hydraulic Engineering, Vol. 117(Issue 11): 1459–1478, 1991.
http://dx.doi.org/10.1061/(asce)0733-9429(1991)117:11(1459)

I. Nezu, and H. Nakagawa, Turbulence in open-channel flows. IAHR Monograph, pp. 53-56, Balkema, Rotterdam, The Netherlands, 1993.

N. Tanaka, and J. Yagisawa, Effects of tree characteristics and substrate condition on critical breaking moment of trees due to heavy flooding, Landscape and Ecological Engineering, Vol. 5(Issue 1): 59-70, 2009.
http://dx.doi.org/10.1007/s11355-008-0060-5


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