Slope spectrum variation in a simulated loess watershed

• DOI: 10.1007/s11707-015-0519-2
• Publication Date: 2015-07-30T13:14:47Z
• Authors: Fayuan Li; Guoan Tang; Chun Wang; Lingzhou Cui; Rui Zhu
• Keywords: Landform

A simulated loess watershed, where the loess material and relief properly represent the true loess surface, is adopted to investigate the variation in slope spectrum with loess watershed evolution. The evolution of the simulated loess watershed was driven by the exogenetic force of artificial rainfall. For a period of three months, twenty artificial rainfall events with different intensities and durations were carried out. In the process, nine DEM data sets, each with 10 mm grid resolution, were established by the method of close-range photogrammetry. The slope spectra were then extracted from these DEMs. Subsequent series of carefully designed quantitative analyses indicated a strong relationship between the slope spectrum and the evolution of the simulated loess watershed.