Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

GIS-based rapid assessment of erosion risk in a small catchment in the wet/dry tropics of Australia

Boggs, Guy S., Devonport, Christopher, Evans, Ken G. and Puig, Patricia (2001). GIS-based rapid assessment of erosion risk in a small catchment in the wet/dry tropics of Australia. Land Degradation and Development,12(5):417-434.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 32 times in Scopus Article | Citations

Google Scholar Search Google Scholar

Title GIS-based rapid assessment of erosion risk in a small catchment in the wet/dry tropics of Australia
Author Boggs, Guy S.
Devonport, Christopher
Evans, Ken G.
Puig, Patricia
Journal Name Land Degradation and Development
Publication Date 2001
Volume Number 12
Issue Number 5
ISSN 1099-145X   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-0035440337
Start Page 417
End Page 434
Total Pages 18
Publisher John Wiley & Sons
HERDC Category C1 - Journal Article (DEST)
Abstract Assessing the impact of various land uses on catchment erosion processes commonly requires in-depth research, monitoring and field data collection. as well as the implementation of sophisticated modelling techniques. This paper describes the evaluation of a geographic information system (GIS)-based rapid erosion assessment method, which allows the user to quickly acquire and evaluate existing data to assist in the planning of more detailed monitoring and modelling programmes. The rapid erosion assessment method is based on a simplified version of the revised universal soil loss equation (RUSLE), and allows the rapid parameterization of the model from widely available land unit and elevation datasets. The rapid erosion assessment method is evaluated through the investigation of the effects of elevation data resolution on erosion predictions and field data validation. The use of raster digital elevation model (DEM)-derived data, as opposed to vector land unit relief data, was found to greatly improve the validity of the rapid erosion assessment method. Field validation of the approach, involving the comparison of predicted soil loss ratios with adjusted in-stream sediment yields on a subcatchment basis, indicated that with decreasing data resolution, the results are increasingly overestimated for larger catchments and underestimated for smaller catchments. However, the rapid erosion assessment method proved to be a valuable tool that is highly useful as an initial step in the planning of more detailed erosion assessments.
Keywords rapid erosion assessment
geographic information systems
data resolution
digital elevation models
australia
prediction
elevation
DOI http://dx.doi.org/10.1002/ldr.457   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
Versions
Version Filter Type
Access Statistics: 76 Abstract Views  -  Detailed Statistics
Created: Wed, 28 Nov 2007, 14:16:08 CST