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Urban Expansion In The 21st Century

1853 Words8 Pages

Urban expansion in the 21st century seems to be unstoppable, as noted by the rapid expansion of existing metropolitan areas, or emergence of new big cities. It is estimated that by 2030, 61% of the world’s population will be living in urban areas. Urban population of countries in Asia and Africa would even double within this time period (UN (United Nations Population Division). 2004).
With such expansion, along with the tangible and economic value of urban areas, due to the fact that most production activities occur in urban areas, and profit is directly generated, it is reasonable to say that policies will be increasingly geared towards urban areas, whether it is further expansion, management or planning. Under the motivation and pressure …show more content…

This essay is going to discuss and analyse the values of protected areas to cities, through reviewing and analysing a series of relevant literature and data. This essay will first define what is a protected area. Next, it will look at different types of values of protected areas and how these values are relevant to cities.
To ensure quality discussion, the term protected areas must be defined. According to IUCN. (2017, July 07), a protected area is “A protected area is a clearly defined geographical space, recognised, dedicated and managed, through legal or other effective means, to achieve the long term conservation of nature with associated ecosystem services and cultural values.”. Protected areas can be in a form of national parks, habitat of species, natural …show more content…

For example, oceanic protected areas act as a major carbon sink because it absorbed one third of human CO2 emissions (Roberts, C. M., Leary, B., McCauley, D., Purry, P., & Duarte, C. 2017). On top of that, tropical This reduces the amount of greenhouse gas released into the atmosphere, reducing the warming effects and its negative consequences. Besides from acting as a carbon storage, protected areas also protect the ecosystem which can potentially act as a carbon sink, while loss or degradation of ecosystem accounts for 20% of global greenhouse gas emissions (The Role of Protected Areas in Regard to Climate Change. 2012). By reducing greenhouse gas emissions, protected areas reduce the climate impact of city

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