Pressures on the Environment from Urban Living

The results of the 2016 census show that almost 2/3 of the Irish population now live in urban areas. Since the economy began to grow in Ireland during the 1990s, there has been a sustained movement of population from rural to urban areas. Cities and towns began to sprawl as a result of development in infrastructure, housing and industry, with growth rates exceeding those of our EU neighbours.

For example, according to Census 2016, the fastest growing town in Ireland was the Louth town of Drogheda. Its population grew 6% to almost 41,000 since the previous census five years ago.

The type of urban development that consists of dispersed development of urban areas in low to medium density development (urban sprawl) is seen as particularly negative for the environment. Because it is difficult to serve such development with public transport, problems are created in areas such as: air and water pollution, waste management, loss of rural landscape and excessive use of fossil fuels. It can also result in damage to surrounding ecosystems and loss of biodiversity. The dramatic increase in road construction in Ireland, for example, has the effect of breaking up habitats. Wildlife, such as foxes and badgers, is now a common sight in Dublin, Cork, Belfast and many smaller towns in Ireland.

In addition, the concentration of vehicles and households in urban areas increases air pollution, and although Ireland has good air quality thanks to the Atlantic winds, we still have the second highest per capita levels of emissions within the EU. We are second to Luxembourg, where a large number of people travel to and from neighbouring countries to work, thereby contributing to the national emissions (DKM, 2012). Industries also release chemical pollutants into the atmosphere. These pollutants are washed away by rainwater into rivers and can damage water quality as well as marine ecosystems.

One of the most prominent problems of urbanisation around the world is the ‘urban heat-island’ effect as cities tend to generate higher temperatures than rural areas. It can cause urban areas to be 10 degrees C warmer than rural ones in extreme cases. Heat gets trapped between high-rise buildings, while roads and other artificial surfaces also trap in the heat. This ‘urban heat-island’ effect has severe environmental impacts, especially on air quality, and is a major contributor to global warming and climate change.

A consistent reduction in pollution is needed in order to secure a sustainable future. The EPA report 
'Ireland's Environment 2016' has detailed information on urban issues and the requirements for sustainable living.

previousPrevious - Unsustainable Development
Next - Dublin in the Futurenext