The book presents a selection of papers given at the International Symposium on “Landform – structure, evolution process control“, Bonn, June 2007. The meeting brought together senior experts and young researchers from various disciplines working on landform related issues in order to discuss the crucial role played by landform as a boundary surface between atmosphere, hydrosphere, biosphere, pedosphere and lithosphere. The book combines introductory/overview papers and case studies. The case studies present various new approaches towards a better understanding of the role of landform as a boundary surface. Additionally, new methods of handling, modelling and visualisation of landform data (incl. digital elevation models, weather forecasting models, hydrological models, and ecological models) are presented.