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Exposure is especially high in the densely populated and rapidly urbanizing river plains and coastlines in developing countries, where 89% of the world’s flood-exposed people live.Ĭities are also in the frontline of combating epidemics.
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Globally, 1.81 billion people (that is 1 in 4 people) live in high-risk flood zones. Since 1985, about 76,400 km2 of newly urbanized land was added in locations with inundation depths of over 0.5 meters during severe floods – this corresponds to about 50 times the area of Greater London. Such sprawl puts pressure on land and natural resources, resulting in undesirable outcomes cities represent two-thirds of global energy consumption and account for more than 70% of greenhouse gas emissions.Ĭities play an increasingly important role in tackling climate change, because their exposure to climate and disaster risk increases as they grow. The expansion of urban land consumption outpaces population growth by as much as 50%, which is expected to add 1.2 million km² of new urban built-up area to the world by 2030. Once a city is built, its physical form and land use patterns can be locked in for generations, leading to unsustainable sprawl. Rising conflicts contribute to pressure on cities as 50% of forcibly displaced people live in urban areas. However, the speed and scale of urbanization brings challenges, such as meeting accelerated demand for affordable housing, viable infrastructure including transport systems, basic services, and jobs, particularly for the nearly 1 billion urban poor who live in informal settlements to be near opportunities.
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With more than 80% of global GDP generated in cities, urbanization can contribute to sustainable growth through increased productivity and innovation if managed well. This trend is expected to continue, with the urban population more than doubling its current size by 2050, at which point nearly 7 of 10 people will live in cities. With new chapters on digital cities and sustainable development, as well as new and expanded coverage of contemporary issues such as accessibility, gentrification, and the rise of the creative class, the new edition offers a comprehensive and current study of Canadian cities, written by Canadians for Canadians.Today, some 56% of the world’s population – 4.4 billion inhabitants – live in cities. Examining all facets of Canadian cities, including historical evolution, dynamics of economy, environmental impacts, urban lifestyles, cultural makeup, social structure, infrastructures, governance, planning, and appearance, the text is crafted to help the next generation address the urban problems they are inheriting and find solutions for them. "A long-standing market-leading text for urban geography courses with a Canadian perspective, Canadian Cities in Transition, now in its sixth edition, continues to examine the critical issues and major transformations taking place in urban Canada. Xiii, 464 Seiten Illustrationen, Diagramme, Karten Don Mills, Ontario: Oxford University Press2020
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