Mega-urbanisation on the coast: global context and key trends in the twenty-ﬁrst century
The aim of this book is to explore the dynamic interactions that exist between urban and environmental systems in coastal megacities. This interaction is highly signiﬁcant because of the coinciding concentrations of biophysical risk, ecological sensitivity, and human life and assets that exist in these areas. In the context of the global increase in the number and size of coastal megacities worldwide, the negative impact of intense urban expansion and population pressures on sensitive coastal environments, and the expectation of new and uncertain hazards associated with the onset of climate change, improving our understanding of the dynamic pressures at work on the coast has never been more important. This chapter sets the scene for the in-depth exploration of these interactions throughout this volume, outlining some of the key trends, shifts and concerns facing coastal megacities in the twenty-ﬁrst century.