Urban planning lock-in: implications for the realization of adaptive options towards climate change risks.

Urban planning can play a potentially meaningful role in managing the risks of climate change. It is, however, unclear to what extent planning practice can be transformed in order to address these risks effectively in the global south. Using Johannesburg in South Africa as an illustrative case and the interrelated challenges of flood risks and informal growth as an example, it is demonstrated how the identification of a particular planning practice with historically informed values of justice substantially constrains the realization of adaptive planning options. Correspondingly, its implications for managing flood risks of climate change through planning under conditions of urban divide are outlined. [ABSTRACT FROM AUTHOR]