Connect with us

Urban Development

Four Things You Should Know About Climate-Smart Cities

MD Staff

Published

on

Singapore, host of this year’s Innovate4Climate (I4C) conference, is one of the world’s leading cities for climate-smart urban development. In the lead-up to this year’s I4C event, here are four elements of climate-smart urban development worth knowing.

First, cities can play an important role in climate-smart development

Today, 55 percent of the global population lives in urban areas. This figure is forecast to increase to 68 percent by 2050 – adding 2.5 billion additional people to cities. Over the next 35 years, more than 1.2 billion people in all, or one-third of the world’s urban population, are expected to live in Asian cities alone.

Cities across the world are major contributors to global emissions. Today, it is estimated that cities account for more than 70% of all global CO2 emissions each year – more than 25 billion tons. This is the equivalent of more than 5 billion cars on the road. As these cities grow, so too will their carbon footprint, in the absence of concrete action to help improve urban development. Moreover, as cities develop, their exposure to climate and disaster risk also increases. Almost half a billion urban residents live in coastal areas, increasing their vulnerability to storm surges and sea level rise. Many of Asia’s megacities – Bangkok, Dhaka, Guangzhou, Ho Chi Minh City, Kolkata, Manila, Mumbai, Shanghai, Yangon – are low-lying or coastal cities and highly vulnerable to rising sea levels, floods, and other impacts of climate change: while all coastal cities will be affected by sea-level rises, Asian cities will be particularly badly affected. About four out of every five people impacted by sea-level rise by 2050 will live in East or South East Asia.

Building cities that “work” – inclusive, safe, resilient, and sustainable – requires intensive policy coordination and investment choices. Once a city is built, its physical form and land use patterns can be locked in for generations, leading to unsustainable sprawl. Many cities are already at the forefront of innovative climate solutions, ranging from policies to reduce emissions through transit-oriented development and energy efficiency efforts to building more resilient urban infrastructure that can better withstand the impacts a changing climate.

Second, the populations and emissions of Asian cities are growing fast

Asia’s cities already consume 80% of the region’s energy and create 75% of its carbon emissions. Asian cities are poised to contribute more than half the rise in global emissions over the next 20 years if no action is taken.

India and China, for instance, are two of the three countries that will account for 35 percent of the world’s projected urban population growth by 2050. Without action, this rapid growth will also lead to increasing emissions.

Third, Asian cities can also play a significant role in combating climate change

While high pollution levels of Asian cities tend to capture global attention, many cities in the region are also at the forefront of climate-smart policies, innovations, and investment. Emerging market cities in Asia and around the world have the opportunity to leapfrog historic approaches to urban development, instead putting in place resilient, green infrastructure for coming generations.  A recent report by IFC on Climate Investment Opportunities in Cities estimated that emerging market cities have the potential to attract more than $29.4 trillion in cumulative climate-related investments in six key sectors by 2030, including climate investment opportunities in Asia of some $20 trillion.

For instance, by 2020, Beijing plans to replace over 70,000 gasoline and diesel taxis with electric vehicles. Seoul is aiming to add 2000 km of bike paths and create 250 pedestrian zones. Hanoi plans to generate electricity from its biggest landfill, which will reduce emissions and generate electricity.

Fourth, Singapore, host of I4C, excels at climate-smart urban development

With nearly 8,000 people per square kilometer, Singapore has the world’s third highest population density. Singapore is a prime example of how innovation, technology, and strategic urban development can meet urban development and climate demands. In addition to hosting the world’s largest underground district cooling network in the world, the country is also home to the Semakau landfill: an offshore landfill and a model for climate-smart development. The landfill deploys an innovative waste disposal design, comprising silt screens to protect the surrounding coral and an impermeable layer to deter leaching, ensuring that the man-made island remains habitable for a diverse range of marine life. An onsite waste-water treatment plant also ensures that excess water is treated before being discharged into the surrounding sea. The site is so clean and efficient that it is a popular tourist attraction!

An additional way the country is utilizing the surrounding sea as it develops is the introduction of the country’s largest offshore floating solar panel system, expected to go online later in 2019. This five-hectare facility is expected to generate more than 6,000 megawatts of power and will help to reduce more than 2,000 tons of greenhouse gas emissions every year – while not occupying a single centimeter of precious land, a scarce resource for the tiny nation.

I4C looks forward to learning from Singapore and sharing their climate-smart experiences with the world.

World Bank

Continue Reading
Comments

Urban Development

Rethink Cities to Help Asia Make the Most of Urbanization

Published

on

Cities have always played a central role in economic development by bringing workers and entrepreneurs together, spurring innovation, and sharing resources including infrastructure more efficiently. This should be good news for developing Asia: by 2050, there is projected to be 2.96 billion people living in the region’s towns and cities – 64% of all the entire population – up from 1.84 billion – or 46% of the population – in 2017.

Unfortunately, while the region’s cities are sure to grow in size, they may fail to fulfill their potential as engines of growth and job creation due to underinvestment in urban infrastructure, a lack of affordable housing, and unsynchronized spatial and economic planning. 

What are policymakers to do?

First, they must achieve a more accurate and granular understanding of how their countries are urbanizing. New data sources are needed because official statistics often fail to capture the true urban footprint of cities since they rely on municipal boundaries drawn decades ago, for example.  Satellite imagery, however, shows clearly that developing Asia’s cities are expanding without regard to those boundaries, forming what we call “natural cities”. Our study, Fostering Growth and Inclusion in Asia’s Cities tracked almost 1,460 natural cities across developing Asia, with many of them in the People’s Republic of China (680 natural cities), India (320), and Indonesia (93).  Further, cities are merging to form integrated urban agglomerations; 476 natural cities that were separate in 1992 had linked up to form 124 city clusters by 2016, the largest being the Shanghai-centered city cluster, home to 91.5 million people, and encompassing a total of 53 natural cites, including Nanjing and Hangzhou, in the Yangtze River Delta area.

Urban expansion and formation of a city cluster in the Yangtze River Delta Area

Source: Asian Development Bank. 2019. Asian Development Outlook 2019 Update: Fostering Growth and Inclusion in Asia’s Cities. Manila.

This means urban planning cannot simply stop at the city limits. Efficient transport networks that extend from neighborhoods to workplaces prevent fragmentation of a city’s labor market. 

Similarly, as cities cluster, decisions on where to place vital infrastructure, such as water treatment and solid waste facilities, transport hubs, green spaces, and industrial parks require coordinated decision-making among local government units. Unfortunately, companies operating in city clusters are now significantly more likely than those in stand-alone cities to complain about infrastructure and regulatory bottlenecks. 

Second, policymakers must think of cities as labor markets.  To be sure, cities are much more than places of work. However, they cannot thrive unless they function well for both enterprises and workers.  This requires that travel within the city or city cluster is fast and cheap, that firms and households can easily relocate from one part of a city to another, and that real estate is affordable.

 Asian cities need to do a lot on these fronts.  Tests using Google Maps in 278 natural cities show considerable congestion during peak travel times in many large cities, such as Metro Manila, Dhaka, and Bengaluru.  Moreover, in 199 of the cities a full quarter of the surveyed trips could not be made by public transport at all, while for the other three quarters, travel by public transport including walking to and from the transport hub was three times longer than by car. 

This clearly shows that Asian cities must invest much more in efficient public transport if businesses are to attract workers and flourish. The transport system must combine trains, buses, taxis, ride sharing, and less formal services like jeepneys and autorickshaws—but regulating them well—to improve mobility. 

Affordable homes are also critical to attract workers, keep them as their skills and families grow, and then allow them to easily shift to other jobs. However, our analysis showed that that home prices are well beyond the means of median-income households in more than 90% of cities. What is needed to tackle that is a combination of demand-side and supply-side policies, including reassessment of land use regulations that might be inadvertently restricting the supply of real estate. 

Finally, growth requires vibrancy in all types of cities. Cities are connected to one another, and to the rural hinterland, through flows of goods, services, and people.  Robust and balanced national economic growth depends also on mid-sized cities and even market towns that specialize in distributing agricultural produce.  

This requires investment in efficient inter-city transport. Given competing demands on public funding, large cities should draw more on private sector funding. Such cities have an edge in attracting private investment because the agglomeration economies they generate promise high returns to those who choose to locate there. Allocations of public funds must follow the people.  Many medium-sized cities in the region with populations of 1–5 million and some smaller cities with populations of half a million still attract migrants.  Public investment should support that. 

Asia’s steady urbanization represents an unprecedented chance for the region to ensure robust long-term growth and the creation of good jobs.  Policymakers must not let the opportunity slip through their hands by neglecting their cities. 

ADB

Continue Reading

Urban Development

Towards smart sustainable cities: UNECE examines good practices to promote innovation ‎

MD Staff

Published

on

The world is urbanizing fast. Already today, half the population is living in cities. By 2050, that proportion is projected to rise to over two thirds. Cities are economic powerhouses, accounting for 80 percent of world GDP. They also have large ecological footprints, accounting for 60-80 percent of energy consumption and 75 percent of carbon emissions globally. If the world is to achieve the promise of the 2030 Agenda for Sustainable Development, of prosperity, within planetary boundaries, for all, cities will have to lead the way.

Many cities in the UNECE region have taken up this challenge. And innovation is key to meeting it. Leading cities are using innovative technologies and innovative ways of management and governance to deliver better environmental and economic performance and a better quality of life in an inclusive way.

Leading cities are hotbeds of this kind of innovation. They are dense eco-systems strong universities, innovative start-ups, small, medium and big companies, well-financed investors, deep and diverse talent pools, state of the art communication, transport and energy infrastructures, large local markets, good governance structures, and strong economic ties to the rest of the world. Innovation flourishes in these eco-systems.

But not all cities are there yet. Some are still more part of the problem than part of the solution. And often, innovative solutions pioneered in one city cannot be successfully replicated in others. At its annual session on 5-6 December 2019, the UNECE Team of Specialists on Innovation and Competitiveness Policies discussed what city administrations, citizens, businesses and national Governments can do to speed up the transition towards smart sustainable cities.

Networks exist at the national, regional and global levels where cities are exchanging experiences on innovative solutions for urban sustainability challenges. New technologies such as artificial intelligence and machine learning are key to generate the data and analysis that can make cities smart. But for leading cities, technology is not an end in itself. They use it to empower citizens – including marginalized and vulnerable groups – as well as businesses to identify local needs and to create innovative place-based solutions together with city administrations for people and the environment.

Leading cities provide spaces for experimentation such as living labs or test beds to scale up what is working and stop what is not. They invest in infrastructure and education to make sure everyone has access to new technologies and the opportunities they create. National Governments can support cities in their transition towards sustainability through smart regulation, including on data security and privacy, and through public procurement for innovation, as well as regional policies that bridge the gap between leading cities, their hinterland and smaller communities.

The results of the meeting will inform good practice recommendations to be presented to the UNECE Committee on Innovation, Competitiveness and Public-Private Partnerships in 2020. Subsequently, UNECE will use these good practices in its policy analysis and advice to help member States to further improve their policies in this important field.

The UNECE Team of Specialists on Innovation and Competitiveness Policies is a network of innovation policy experts representing Governments, government agencies, the business and academic communities and civil society from throughout the UNECE region.

Continue Reading

Urban Development

Banking on nature: a Mexican city adapts to climate change

MD Staff

Published

on

Xalapa’s rapid urban expansion has often come at a cost to the ecosystems the city depends on. Photo by CityAdapt

The Mexican city of Xalapa is surrounded by ecosystems that not only harbor stunning flora and fauna, but also provide crucial services to the city and its 580,000 people.

The cloud forest, an indigenous mountain rainforest neighbouring the city­­, provides 30 per cent of Xalapa’s water supply, while the diverse soil and vegetation around it is a vital store of carbon. But both these natural assets and the city itself are feeling the effects by climate change. Fluctuating temperatures and rainfall patterns are destabilizing the mountain slopes around the city, leading to frequent landslides, while intense rains in the mountains cascade into urban areas below, causing turmoil for the city’s residents.

“Human resilience to climate change depends on ecosystems, and we need urgent measures to protect them,” says Isabel Garcia, author of a study examining the climate vulnerability of Xalapa.

In particular, Garcia’s study identified urban expansion–and its effect on the surrounding environment—as an exacerbating factor in the climate-related risks facing the city.

“We have a city that has approximately 20,000 uninhabited homes, because they were built in inaccessible areas, without potable water and drainage services,” Xalapa’s Deputy Director of Planning, Angélica Moya, says.

“We have irregular settlements in areas that should have never been urbanized, and now we have landslides and floods.”

Focusing on natural solutions

Recognizing both the climate change impacts facing the city and the importance of Xalapa’s surrounding ecosystems for helping its people adapt to these changes, local authorities are now turning to natural solutions. Partnering with the UN Environment Programme (UNEP), they are working to restore and protect large areas of cloud forest around the city under the Global Environment Facility-backed CityAdapt project.

A five-year initiative, CityAdapt is working across Latin America and the Caribbean to support cities in their efforts to adapt to climate change, an issue that is increasingly a priority for municipalities around the region, according to UNEP’s Director for Latin America and the Caribbean, Leo Heileman.

“In Latin America and the Caribbean, where 80 per cent of the population lives in cities, we urgently need to shift from vicious cycles of degradation to the virtuous dynamic of resilient ecosystems,” Heileman says.

The CityAdapt project marks Xalapa as the first Latin American city to seize the potential of ecosystem-based adaptation–an approach that uses nature to adapt to climate change. By leveraging the natural environment–like the role of trees in regulating water flow and preventing landslides and erosion—ecosystem-based adaptation can help reduce both flood and drought, and is often much more cost-effective than engineered structures built to serve the same role.

“The main goal of this project is to enhance the capacity of local governments to face the adverse effects of climate change,” Sergio Angón, CityAdapt National Coordinator in Mexico, says.

Within the framework of the project, two reports have already been produced for Xalapa on climate change vulnerability and potential climate scenarios for 2039.

The vulnerability analysis identified areas most at risk from climate change. It also measured the adaptive capacity of the ecosystems that currently provide Xalapa with surface water supply, soil retention and carbon storage.

According to the analysis, Xalapa’s cloud forest—an ecosystem already reduced to just 1 per cent of its former range around Mexico—could see temperatures rise by as much as 1.8°C by 2039, impacting biodiversity, as well as potentially increasing the spread and intensity of diseases in the nearby coffee plantations.

Balancing people and nature

But by restoring the forest and working to limit the growing city’s negative impacts on the surrounding environment, CityAdapt is helping Xalapa strike a vital balance between people and nature.

“We need to move Xalapa in an orderly way towards a new model of territorial development, in which resilience is the key focus,” Xalapa mayor, Hipólito Rodríguez, says.

Alongside research and forest restoration, CityAdapt is backing other adaptation initiatives, such as enhanced watershed planning, and strengthening local livelihoods.

Rainwater harvesting systems are being introduced in public buildings and schools, ensuring adequate water supplies in the face of increasingly unpredictable rains, while the project is also teaching climate-resilient agricultural practices to local communities.

“This is an opportunity to rethink the way we build a city,” says Angelica Moya.

UN Environment

Continue Reading

Latest

Trending