Fig. 7
From: A hybrid in situ and on-screen survey to monitor gully erosion across the European Union
An overview of the secondary validation exercise to assess the potential of the interpolated estimates of gully occurrence probability to locate gully-prone areas in the EU. Coloured points depict the 100 sites with a 1 km radius which were randomly selected according to their mean probability of gully occurrence. The accompanying boxplot (upper right) summarises the distribution of counted gully heads per site per probability category. Examples of mapped locations are given for each probability class using image exports from Google EarthTM.
