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A sediment budget for a cultivated floodplain in tropical North Queensland, Australia

Visser, Fleur, Roth, Christian H., Wasson, Robert J. and Govers, Gerard (2007). A sediment budget for a cultivated floodplain in tropical North Queensland, Australia. Earth Surface Processes and Landforms,32(10):1475-1490.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 4 times in Scopus Article | Citations

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IRMA ID 78220353xPUB31
Title A sediment budget for a cultivated floodplain in tropical North Queensland, Australia
Author Visser, Fleur
Roth, Christian H.
Wasson, Robert J.
Govers, Gerard
Journal Name Earth Surface Processes and Landforms
Publication Date 2007
Volume Number 32
Issue Number 10
ISSN 0197-9337   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-34548659468
Start Page 1475
End Page 1490
Total Pages 16
Place of Publication UK
Publisher John Wiley & Sons Ltd
Field of Research 0406 - Physical Geography and Environmental Geoscience
HERDC Category C1 - Journal Article (DEST)
Abstract Sugarcane is grown on the floodplains of northern Queensland adjacent to the Great Barrier Reef lagoon. Sediment and nutrient loss from these sugarcane areas is considered a potential threat to coastal and marine ecosystems. To enable sugarcane cultivation, farmers have structured the landscape into different elements, comprising fields, water furrows, headlands and drains. In order to apply appropriate management of the landscape and reduce export of sediment, it is important to identify which of these elements act as sediment sources or sinks. In this study erosion and deposition rates were measured for the different landscape elements in a subcatchment of the Herbert River and used to create a sediment budget. Despite large uncertainties, the budget shows that the floodplain area is a net source of sediment. Estimated sediment export varies between 2 and 5 t ha-1 y-1. The relative importance of the landscape elements as sediment sources could also be determined. Plant cane is identified as the most important sediment source. Water furrows generate most sediment, but are a less important source of exported sediment due to their low connectivity. Headlands and minor drains act as sediment traps.
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Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator