Thu, May 05, 2016
Text Size
Thursday, 10 October 2013 06:24

Report says cities should manage key ecosystem services

Increasing urbanization over the next decades presents not only unprecedented challenges for humanity, but also opportunities to curb climate change, reduce water scarcity and improve food security, according to the world's first global assessment on the relationship between urbanization and biodiversity loss, released last week in New York.

The assessment, entitled Cities and Biodiversity Outlook (CBO), argues that cities should facilitate for a rich biodiversity and take stewardship of crucial ecosystem services rather than being sources of large ecological footprints. The volume of research is produced by the Stockholm Resilience Centre (SRC) together with the Secretariat of the Convention on Biological Diversity (CBD), in partnership with UN-Habitat and ICLEI - Local Governments for Sustainability.

The detailed scientific foundation of the CBO, Urbanization, Biodiversity and Ecosystem services: Challenges and Opportunities – A Global Assessment, , has involved more than 200 scientists worldwide. It states that over 60 percent of the land projected to become urban by 2030 has yet to be built. It further states that if current trends continue, 70 percent of the global urban population will be urban by 2050.

The report says this presents a major opportunity to greatly improve global sustainability by promoting low-carbon, resource-efficient urban development that can reduce adverse effects on biodiversity and improve quality of life.

From emitters to carbon sinks

While production and consumption activities heavily concentrated in cities have contributed to some 80 percent of all greenhouse gas emissions, the report suggests that innovative solutions to combating climate change will also come from cities.

Preservation of larger outlying green areas, green corridors that connect larger green patches, green roofs and "brownfields", or land previously used for industrial purposes or certain commercial uses, can also be used as carbon sinks rather than emission sources.

The Japanese district of Yokohama, for instance, which emitted almost 20 million tons of CO2 in 2007, has recognized the importance of biodiversity in stabilizing the local climate. Revenues from a new tax system have since been used to conserve green areas, and roof tops and walls were fitted with greenery. Yokohama is now aiming to reduce per capita carbon emissions by at least 60 percent by 2050. What is important, according to the assessment, is to develop and incorporate already existing green spaces into the functional infrastructure of a city.

Professor Thomas Elmqvist, scientific editor of the assessment, commented:

"The innovation lies not so much in developing new infrastructural technologies but to work with what we already have. The results are often far cheaper and more sustainable as well."

Dr. Braulio Ferreira de Souza Dias, Executive Secretary of the CBD, added that “the sphere of influence of city leaders goes well beyond urban habitats. The decisions taken by local authorities affect ecosystems near and elsewhere, with important feedback effects. By taking the steps to conserve and sustainably use biodiversity, local authorities can ensure that biodiversity will continue to provide cities and their inhabitants with much needed services including freshwater, clean air, food security and protection and resilience against extreme weather, floods and other environmental risks.”

The report reflects the increasing drive towards the development of more blue-green infrastructure to address a growing number of water and wastewater resource issues worldwide, including the UK. The use of Sustainable Urban Drainage Systems (SUDS) to drain surface water as a more sustainable approach to traditional solutions looks set to play a key role in the move towards more sustainable cities.

To read more about the CBO assessment visit www.cbobook.org

News Showcase

  • Holding back the floods - sustainable flood risk management

    FIG 1In an Expert Focus article for WaterBriefing, Mark Goodger, Regional Technical Manager for Hydro International, discusses sustainable flood risk management and long-term resilience.

  • Morpeth bypasses flood risk with Graf UK’s EcoBloc Flex

    Graf UK installer with EcoBloc systemIn a bid to eliminate flood risk and to provide an effective, controlled rainwater drainage solution, water management specialist Graf UK has installed a 620m3 EcoBloc Flex stormwater tank at a new 13-mile bypass in Morpeth, Northumberland.

  • Climate change pressure for water sector

    1281J-KM picThe CIWEM Annual Conference, held in the Royal Geographic  Society in London this week highlighted how the landmark new Paris climate change agreement will help concentrate water industry efforts to reduce energy consumption.

  • Plain Sailing for Jacopa at Boat of Garten

    Boat of GartenWastewater treatment systems and solutions experts Jacopa have successfully installed an advanced submerged aerated filter (SAF) plant for a picturesque Highland village, Boat of Garten. Jacopa was engaged by Crownhouse, who were the M&E division of the SR10 Capital Delivery Partner Laing O’Rourke.

Sign up to receive the Waterbriefing newsletter:


Watch

  • Northumbrian Water's £46m Horsley WTW upgrade

    Horsley Water Treatment Works – Watch an animated build of Northumbrian Water’s £46m upgrade which will be carried out by a joint venture between Interserve Construction Ltd and Doosan Enpure Ltd.

  • Water sector accelerates move to smart networks

    Listen to Joel Hagan, CEO of i2O, Rik Thijssen of Vitens, David Robinson at Veolia and Aurélie Chazerain from Suez Environnement discuss how the industry is turning to smart networks to boost customer service and ensure supply meets demand.

  • Watch the EFRA committee take live evidence in flood inquiry here

    Watch the Environment, Food and Rural Affairs Committee take live evidence in its Future Flood Prevention inquiry here on Wednesday 13 April 2016.Meeting starts at 2.15pm.

    Witnesses: Sir James Bevan, Chief Executive, Environment Agency, John Curtin, Executive Director of Flood and Coastal Risk Management, Environment Agency, Alan Law, Chief Officer, Strategy Reform, Natural England, and Rob Cooke, Director, Terrestrial Biodiversity, Natural England

Click here for more...

Login / Register




Forgot login?
Register
Existing waterbriefing users - log into the new website using your original username and the new password 'waterbriefing'. You can then change your password once logged in.

Advertise with Waterbriefing

WaterBriefing is the UK’s leading online daily dedicated news and intelligence service for business professionals in the water sector – covering both UK and international issues. Advertise with us for an unrivalled opportunity to place your message in front of key influencers, decision makers and purchasers.

Find out more

About Waterbriefing

Water Briefing is an information service, delivering daily news, company data and product information straight to the desks of purchasers, users and specifiers of equipment and services in the UK water and wastewater industry.


Find out more