Spatial dynamics: classical problems, an integrated approach and system performance.

The common nature of a range of 'classical' geographical problems is described. By adopting a particular system description and set of methods, it is shown that it is possible to develop an integrated framework within which the traditional models can be seen as special cases and whose assumptions can be relaxed. It is the ideas of dynamical systems theory which enables such an integrated model system to be built. The framework is then extended by introducing and developing the concept of performance indicators which have roles both in model development and planning.-Author