Model evaluation is an important task in the model development cycle, and a continuous effort of the iLand team. We aim at evaluating iLand against a variety of data sources (from growth and yield data to Lidar data) and ecosystem characteristics (from forest composition to the ecosystem C budget). Besides the evaluation studies presented in iLand publications in the peer-reviewed literature (see e.g., Seidl et al. 2012), here in-depth evaluation studies of particular model processes will be presented.