How can cities protect common green space for the future?

Newcastle Town Moor. Image: Chabe01/Wikimedia Commons.

Urban green space comes in a variety of forms – parks, allotments, gardens, ‘strays’ to mention just a few. One of the most iconic is the urban “common” – these are often extensive tracts of green space in or adjacent to large urban areas that provide publicly accountable, open, green, spaces vital for culture, health, wellbeing and biodiversity in the metropolitan context. Examples include Epping Forest and Wimbledon common in London, Town Moor in Newcastle, Mousehold Heath in Norwich, or Clifton Downs in Bristol.

The term “common” creates in the public consciousness notions of communal ownership, control and use. In fact, this is often a misconception. Most urban “commons” are not community-owned assets, and many have different legal identities, and differing degrees of legal protection and security. These are often the result of a history of different political, social and economic forces shaping land use in each metropolitan context. Epping Forest and Town Moor in Newcastle are, for example, protected by Acts of Parliament. Clifton Down in Bristol is a “traditional” common registered under the Commons Registration Act 1965, which guarantees its status as common land.

Other areas commonly regarded by the public as commons are in actual fact simply urban green space that is preserved by some lesser legal protection - for example, through the planning system, which may designate them as green space or as conservation areas within the local development plan. But plans can change, and much green space is lost to development annually.

Indeed, in the age of austerity, local authorities have been driven to sell much green space that they themselves own to raise funds to provide front line local services, like schools and social care. In this context, true urban commons – those that have the legal status of common land – are extremely precious community assets, in that they are protected from development and preserved for future generations.

But do we value them highly enough? Do we appreciate their importance in shaping our community’s consciousness of its own identity and history? Do we use them to the full as recreational open spaces and if not, how can we champion our urban commons and develop new ways to engage the urban public more fully in their use, management and stewardship?   


A new interdisciplinary 3-year project (“Wastes and Strays”) involving academics from Newcastle University, Exeter University, Sheffield University and Brighton University will address many of these issues. The project will explore the complex social and political history of the urban common, as well as their legal and cultural status today, and in doing so devise tools and methods of negotiation, inclusivity and creativity to inform their future.

The project will make in-depth studies of four iconic urban commons: Town Moor, Newcastle; Valley Gardens, Brighton; Mousehold Heath, Norwich; and Clifton Down, Bristol. It will look at the multiple, negotiated historic uses and legal origins of the common in each case, and its contemporary meaning, popular perception, biodiversity and public use.

One strand of the research is closely focussed to encouraging the more extensive use of urban commons as vital green space for recreation and other community uses, important for mental and physical wellbeing. It will be looking to develop new strategies for community engagement with the urban commons as community assets and will work in partnership with local communities and relevant stakeholder groups to generate ideas for the future of urban commons, in the spirit of their negotiated pasts.

The big idea is to generate a multifaceted definition of the urban common to provide a robust base for education initiatives and future public policy guidance, informing their development and use as a diverse cultural and ecological space.

For hundreds of years, these unique, open spaces have played a varied, but important, role in the individual stories of our towns and cities. We need to develop new and imaginative ways to use them and foster a greater sense of community involvement if we are to preserve them for future generations.

Chris Rodgers is a professor of Law at Newcastle University.

 
 
 
 

Green roofs improve cities – so why don’t all buildings have them?

The green roof at the Kennedy Centre, Washington DC. Image: Getty.

Rooftops covered with grass, vegetable gardens and lush foliage are now a common sight in many cities around the world. More and more private companies and city authorities are investing in green roofs, drawn to their wide-ranging benefits which include savings on energy costs, mitigating the risk from floods, creating habitats for urban wildlife, tackling air pollution and urban heat and even producing food.

A recent report in the UK suggested that the green roof market there is expanding at a rate of 17 per cent each year. The world’s largest rooftop farm will open in Paris in 2020, superseding similar schemes in New York City and Chicago. Stuttgart, in Germany, is thought of as “the green roof capital of Europe”, while Singapore is even installing green roofs on buses.

These increasingly radical urban designs can help cities adapt to the monumental challenges they face, such as access to resources and a lack of green space due to development. But buy-in from city authorities, businesses and other institutions is crucial to ensuring their success – as is research investigating different options to suit the variety of rooftop spaces found in cities.

A growing trend

The UK is relatively new to developing green roofs, and governments and institutions are playing a major role in spreading the practice. London is home to much of the UK’s green roof market, mainly due to forward-thinking policies such as the 2008 London Plan, which paved the way to more than double the area of green roofs in the capital.

Although London has led the way, there are now “living labs” at the Universities of Sheffield and Salford which are helping to establish the precedent elsewhere. The IGNITION project – led by the Greater Manchester Combined Authority – involves the development of a living lab at the University of Salford, with the aim of uncovering ways to convince developers and investors to adopt green roofs.

Ongoing research is showcasing how green roofs can integrate with living walls and sustainable drainage systems on the ground, such as street trees, to better manage water and make the built environment more sustainable.

Research is also demonstrating the social value of green roofs. Doctors are increasingly prescribing time spent gardening outdoors for patients dealiong with anxiety and depression. And research has found that access to even the most basic green spaces can provide a better quality of life for dementia sufferers and help prevent obesity.

An edible roof at Fenway Park, stadium of the Boston Red Sox. Image: Michael Hardman/author provided.

In North America, green roofs have become mainstream, with a wide array of expansive, accessible and food-producing roofs installed in buildings. Again, city leaders and authorities have helped push the movement forward – only recently, San Francisco created a policy requiring new buildings to have green roofs. Toronto has policies dating from the 1990s, encouraging the development of urban farms on rooftops.

These countries also benefit from having newer buildings, which make it easier to install green roofs. Being able to store and distribute water right across the rooftop is crucial to maintaining the plants on any green roof – especially on “edible roofs” which farm fruit and vegetables. And it’s much easier to create this capacity in newer buildings, which can typically hold greater weight, than retro-fit old ones. Having a stronger roof also makes it easier to grow a greater variety of plants, since the soil can be deeper.


The new normal?

For green roofs to become the norm for new developments, there needs to be buy-in from public authorities and private actors. Those responsible for maintaining buildings may have to acquire new skills, such as landscaping, and in some cases volunteers may be needed to help out. Other considerations include installing drainage paths, meeting health and safety requirements and perhaps allowing access for the public, as well as planning restrictions and disruption from regular ativities in and around the buildings during installation.

To convince investors and developers that installing green roofs is worthwhile, economic arguments are still the most important. The term “natural capital” has been developed to explain the economic value of nature; for example, measuring the money saved by installing natural solutions to protect against flood damage, adapt to climate change or help people lead healthier and happier lives.

As the expertise about green roofs grows, official standards have been developed to ensure that they are designed, built and maintained properly, and function well. Improvements in the science and technology underpinning green roof development have also led to new variations on the concept.

For example, “blue roofs” increase the capacity of buildings to hold water over longer periods of time, rather than drain away quickly – crucial in times of heavier rainfall. There are also combinations of green roofs with solar panels, and “brown roofs” which are wilder in nature and maximise biodiversity.

If the trend continues, it could create new jobs and a more vibrant and sustainable local food economy – alongside many other benefits. There are still barriers to overcome, but the evidence so far indicates that green roofs have the potential to transform cities and help them function sustainably long into the future. The success stories need to be studied and replicated elsewhere, to make green, blue, brown and food-producing roofs the norm in cities around the world.

Michael Hardman, Senior Lecturer in Urban Geography, University of Salford and Nick Davies, Research Fellow, University of Salford.

This article is republished from The Conversation under a Creative Commons license. Read the original article.