Changes in land use on farms at Hengelo were remarkably more frequent than was usually supposed in such areas. The larger farms had a general tendency to decrease in area, while the smaller farms tended to increase in area.

This paper serves three purposes. First, it gives a short introduction to the concept of sustainability in relation to land use. Since the Brundtland report it has become clear that sustainability is a dynamic concept that changes when conditions in society change. Moreover, it is easier to assess what is `unsustainable¿ than what is `sustainable¿. But that will not suppress the demand for sustainable developments.

Evaluation of effects of agri-environmental measures on rangeland degradation in two less-favoured areas in Portugal

Nadia Manuela Jones