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The Chinese Loess Plateau suffers from serious gully erosion induced by natural and human causes. Gully-affected areas detection is the basic work in this region for gully erosion assessment and monitoring. For the first time, an unmanned aerial vehicle (UAV) was applied to extract gully features in this region. Two typical catchments in Changwu and Ansai(More)
In loess plateau, the shoulder-line makes a distinct separation between positive terrains and negative terrains. Using 6 typical landform units along north-south trend of the Loess Plateau as test areas and 5 m-resolution DEMs as original test data, positive terrain and negative terrain are extracted with the method of neighborhood analysis and slope(More)
  • Fayuan Li
  • 2010
An integrated method combining digital terrain analysis (DTA) and object-oriented image analysis is used to classified loess slope into six types according to surface shape. Firstly, several data layers are extracted from Digital Elevation Models (DEM). Secondly, the data layers are combined into a multi-band image. Thirdly, object-based image analysis is(More)
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