Sequester and store carbon

The winners of Smogathon 2016 suggested building a large green wall in the centre of Kraków. Based on the modern technologies the artificially placed wall made of metal and moss would clean local air, lower the temperature, retain water, increase biodiversity and serve as a decoration for the city centre [1,2]. The project was not completed due to lack of scientific data on its effectiveness and the weak price and outcomes balance; the city is still searching for more economical and practical solutions [6].

The Hetton Lyons Primary School's green roof is designed to evolve and flourish over the coming years, helping to combat a number of climate change issues facing the next generation. Aims were ecological benefits, providing a natural habitat for plants and wildlife while helping to reduce air and noise pollution, cutting carbon emissions and assisting with rainwater retention and attenuation (Ref 1).

The Green Ventilation Corridors network in Stuttgart, Germany is an implemented nature-based solution coupled with regulatory policies and incentives. Within this initiative, Green ventilation corridors were created to enable fresh air to sweep down from hills surrounding the city (4).

Greened-over urban railway tracks (grass tracks) is a city-wide program in Stuttgart which assumes the construction of tram lines with grassed-over tracks. This applies not only to planning and construction but also long-term maintenance (ref 1).

In 2008, a green wall of more than 500 m^2 using a hydroponic watering system was developed on the side of the Max Juvenal bridge. Designed by Patrick Blanc, french botanist and pioneer in the development of green walls, it is considered an "authentic work of art, which evolves over time and the seasons and contributes to "renaturing" the urban space" (Ref. 4, page 7). The wall is intended to illustrate the benefits that green walls can bring to the environment, such as the reduction of heat islands in urban areas and their contribution to cleaner air due to the production of oxygen and the reduction of CO2 rate by photosynthesis (Ref. 1).

Number One First Street is at the corner of Medlock Street and Whitworth Street behind the train arches near Oxford Road Station in the city center of Manchester (ref. 6). During the redevelopment of the former BT building now called Number One First Street a green roof was installed (ref 2). Whilst the vegetation slowly established, it provided a habitat for invertebrates and insects. A green wall, accommodating 37,000 plants was planned to be installed by 2020 which would replace glass, plastic and metal cladding with greenery (ref 1).

New Bolton Woods Ltd is a development partnership between the regeneration company Urbo and Bradford Council (ref5). This project aims to create a new sustainable urban neighbourhood, linked to the existing Bolton Woods. As the majority of the proposed development is situated on land which falls within Flood Zone, a range of measures including the raising of ground floor levels, and incorporation of sustainable drainage techniques will be used to manage runoff.
The project intends to provide a series of well landscaped, high-quality open areas and parks for the community. There is potential for a long term phased canal restoration (ref. 1). The second stage,145 houses are currently under construction on the slopes off Poplars Park Avenue, overlooking Canal Road, and are due to be completed by 2021 (ref 6). West Yorkshire Ecological Service raised concerns that the development would lead to a loss of woodland (ref 6).

The Carbon Landscape is a pioneering project in landscape restoration in Wigan, Warrington and Salford. Led by the Lancashire Wildlife Trust, it will revitalize a landscape left devastated by decades of coal-mining and peat extraction (Ref 5). It works to restore key habitats and reconnect local people with their unique natural heritage, preserving it for future generations. The restoration of the peat base to lowland raised bog provided an opportunity for carbon sequestration and storage (Ref 1). There is a strong vision to reconnect local people with their rich natural heritage, creating opportunities and a sense of pride in the local area (Ref 4).

The woodland community garden is the main project of the Woodland community. Since 2010 they have transformed a derelict urban waste dumping site into a thriving community garden and ‘outdoor community centre’. Since then it has become an important local space where people make new friends and feel part of the community. It’s also a great place to unwind from the everyday stresses and strains of city life. Each year, around 50 households grow their own fruit, vegetables and herbs in the garden’s raised beds. The garden has over 50 raised beds where local people can grow their own food with beds allocated on an annual basis. For people who do not have raised beds there are still plenty of opportunities to get involved, including via twice-weekly volunteer sessions. The garden is a wonderfully therapeutic space that helps people to recover from the stresses and strains of everyday life. (Ref 1)

The Seven Lochs Wetland Park is an urban park that is due to be created in Scotland. It will comprise nearly 20 km² of land and water between Glasgow and Coatbridge. The park will combine many existing features, including four local nature reserves; Bishop Loch, Cardowan Moss, Commonhead Moss (a raised bog) and Hogganfield Park; Drumpellier Country Park which includes Woodend Loch SSSI and Lochend Loch; Frankfield Loch; Johnston Loch; Garnqueen Loch; Provan Hall a 15th-century category A listed building. It will be Scotland's largest urban heritage and nature park. The vision for the Seven Lochs Wetland Park is of a new park of national significance, sustaining and enhancing a high quality, innovative wetland environment that will (a) protect and enhance biodiversity and heritage (b) promote health and well-being (c) contribute to environmental, economic and social regeneration (Ref 1).