Contribution of intercepted subsurface flow to road runoff and sediment transport in a logging-disturbed tropical catchment

J N Negishi; Roy C Sidle; A D Ziegler; S Noguchi; N A Rahim

doi:10.1002/esp.1606

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Contribution of intercepted subsurface flow to road runoff and sediment transport in a logging-disturbed tropical catchment

Journal article

Peer reviewed

Contribution of intercepted subsurface flow to road runoff and sediment transport in a logging-disturbed tropical catchment

J N Negishi, Roy C Sidle, A D Ziegler, S Noguchi and N A Rahim

Earth Surface Processes and Landforms, Vol.33(8), pp.1174-1191

2008

DOI: https://doi.org/10.1002/esp.1606

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Abstract

cutbank seepage

logging impacts

hydrogeomorphic controls

sediment yield

tropics

Hydrological and sediment fluxes were monitored for a 1 yr period in a tropical headwater catchment where a 3 yr old logging road caused substantial Hortonian overland flow (HOF) and intercepted subsurface flow (ISSF). On a 51.5 m road section, ISSF became an increasingly important component of total road runoff, up to more than 90% for large storms. The proportion of ISSF contributed by road cuts along more or less planar slopes compared with ISSF from a zero-order basin (convergent slopes) truncated by the road declined with increasing rainfall. During the monitored storms that generated ISSF along the road, on average, 28% of sediment export and 79% of runoff from the road section were directly attributable to ISSF. Estimates of total sediment export from the road surface (170 t ha-1 yr-1) and suspended sediment export from the logging-disturbed catchment (4 t ha-1 yr-1) were exceptionally high despite 3 yr of recovery. ISSF caused not only additional road-generated sediment export, but also exacerbated HOF-driven erosion by creating a poor foundation for vegetation recovery on the road surface. Copyright © 2007 John Wiley & Sons, Ltd.

Details

Title: Contribution of intercepted subsurface flow to road runoff and sediment transport in a logging-disturbed tropical catchment
Authors: J N Negishi (Author) - National University of Singapore, Singapore
Roy C Sidle (Author) - Kyoto University
A D Ziegler (Author) - University of Hawaii, United States
S Noguchi (Author) - Forestry and Forest Products Research Institute, Japan
N A Rahim (Author) - Forest Research Institute Malaysia, Malaysia
Publication details: Earth Surface Processes and Landforms, Vol.33(8), pp.1174-1191
Publisher: John Wiley & Sons Ltd.
Date published: 2008
DOI: 10.1002/esp.1606
ISSN: 0197-9337
Organisation Unit: University of the Sunshine Coast, Queensland; Sustainability Research Cluster
Language: English
Record Identifier: 99449580802621
Output Type: Journal article

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