More than half of the world population now lives in cities, and urban expansion continues as rural people move to cities. This results in the loss of land for other purposes, particularly soil for agriculture and drainage. This book presents a review of current knowledge of the extension and projected expansion of urban areas at a global scale.
Focusing on the impact of the process of 'land take' on soil resources and the ecosystem services that they provide, it describes approaches and methodologies for detecting and measuring urban areas, based mainly on remote sensing, together with a review of models and projected data on urban expansion. The most innovative aspect includes an analysis of the drivers and especially the impacts of soil sealing and land take on ecosystem services, including agriculture and food security, biodiversity, hydrology, climate and landscape.
Case studies of cities from Europe, China and Latin America are included. The aim is not only to present and analyse this important environmental challenge, but also to propose and discuss solutions for the limitation, mitigation and compensation of this process.
Foreword Fernanda Guerrieri Part 1: Introducing and Understanding the Process 1. Is Urban Expansion a Problem? Ciro Gardi 2. Measuring and Monitoring the Extent of the Built Environment: Methodologies and Data Available Michele Munaf? and Luca Congedo 3. Measuring and Monitoring the Extent of the Built Environment: From the Local to the Global Scale Daniele Ehrlich, Aneta J. Florczyk, Andreea Julea, Thomas Kemper, Martino Pesaresi and Vasileios Syrris 4. Modelling and Projecting Urban Land Cover Carlo Lavalle, Filipe Batista e Silva, Claudialƒ$