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An eco-city or ecocity is "a human settlement modeled on the self-sustaining resilient structure and function of natural ecosystems", as defined by Ecocity Builders (a non-profit organization started by Richard Register, who first coined the term). [1] Simply put, an eco-city is an ecologically healthy city. The World Bank defines eco-cities as "cities that enhance the well-being of citizens and society through integrated urban planning and management that harness the benefits of ecological systems and protect and nurture these assets for future generations". [2] Although there is no universally accepted definition of an 'eco-city', among available definitions, there is some consensus on the basic features of an eco-city.
The world's population is continuously increasing, which puts a tremendous amount of pressure on cities due to the need for new urban development. There is an urgent need for cities around the world to adapt ecologically based urban development to work towards sustainability. The dimensions of an ecocity provide solutions to improve the living conditions in cities by solving our current unsustainable practices. [3]
The cities around the world that face the most severe challenges associated with the world's urban population are those in developing countries. [4] Eco-cities are commonly found to focus on new-build developments, especially in developing nations such as China, wherein foundations are being laid for new eco-cities catering to 500,000 or more inhabitants. [5]
In the first half of the 19th century, the Garden City of Ebenezer Howard, the urbanistic thought of Frank Lloyd Wright and Le Corbusier laid the foundations for a radical change of paradigm and a comprehensive transformation in the urban planning canon. [6] During the post-war era, there was the spread of modernist tower blocks to satisfy the needs of urban slums. [6]
Initial ideas behind the eco-cities can be traced back to 1975 with the formation of a non-profit organization called Urban Ecology. [7] Founded by a group of visionary architects and activists including Richard Register in Berkeley, California, the organization worked at the intersection of urban planning, ecology, and public participation to help formulate design concepts centered around building environmentally healthier cities. [7] [8] Some of their efforts included initiating movements to plant trees along the main streets, promoting the construction of solar greenhouses, developing environment-friendly policies by working with the Berkeley city planning division and encouraging public transportation. [8] Building on these strategies, Richard Register later coined the term 'ecocity' in his 1987 book titled "Ecocity Berkeley: Building Cities for a Healthy Future" describing it as a city where human beings live in harmony with nature and therefore greatly reducing their ecological footprint. Urban Ecology began publishing articles focused on similar complex urban issues that elevated the movement further with the creation of their magazine, 'Urban Ecology' in 1987. For two decades, they also publish two newsletters, 'The Sustainable Activist' and 'The Urban Ecologist' to pursue their vision.
During the latter half of the 20th century, concepts surrounding environmentally friendly or nature-conscious communities expanded in scope, coinciding with a deeper understanding of ecological complexities. Recognizing the far-reaching consequences of ecosystem dynamics, pollution, and natural resource depletion, it became clear that a city's ecological footprint must be managed not only at the local level but also regionally and globally. An example of this is Wolman's urban metabolism model, which established a comprehensive accounting system for all materials and resources required by a city. McHarg, on the other hand, emphasized the necessity of city planning that aligns with the ecological and environmental conditions specific to each site. [9]
In the 1990s, there we two important events that began the initiative for eco-city developments. The first event involved the publication of the Brundtland Report. The Brundtland Report presented the idea of sustainable development. The second event occurred in 1992 at the United Nations Earth Summit. The members at the summit created a plan to apply sustainable development to our cities. The Eco-cities that were developed during this time period incorporated the concept of sustainable development. However, a majority of the developments were created to provide a vision of an eco-city. [10] Eco-cities have now become a popular way to create sustainable new urban development.
Eco-Cities in China have received strong support from the government since the early 2000s [11] as a policy to confront the nation's challenges with rapid urbanization and climate change. [12] Notably, China now boasts the world's largest eco-city development program, [13] with hundreds of eco-city projects currently in development. [14]
Urban Ecology further advanced the movement when they hosted the first International Ecocity Conference in Berkeley, California in 1990. [15] The conference focused on urban sustainability problems and encouraged over 800 participants from 13 countries to submit proposals on best practices to reform cities for a better urban ecological balance.
Following this, in 1992, Richard Register founded the non-profit organization Ecocity Builders, to advance a set of goals outlined in the conference. Since its conception, the organization has been the convener of the International Ecocity Conference Series, now known as Ecocity World. The IECS has been the longest standing international conference series consisting of biennial Ecocity World Summits (EWS) and has been held in Adelaide, Australia (1992); Yoff, Senegal (1996); Curitiba, Brazil (2000); Shenzhen, China (2002); Bangalore, India (2006); San Francisco, United States (2008); Istanbul, Turkey (2009); Montreal, Canada (2011); Nantes, France (2013); Abu Dhabi, UAE (2015), Melbourne, Australia (2017); Vancouver, Canada (2019); and Rotterdam, the Netherlands (2022).
Other leading figures include architect Paul F. Downton and authors Timothy Beatley and Steffen Lehmann, who have written extensively on the subject.
An ideal eco-city has frequently been described as one that fulfills the following requirements: [7] [16]
Besides these, each individual eco-city has an additional set of requirements to ensure ecological and economic benefits that may range from large-scale targets like zero-waste and zero-carbon emissions, as seen in the Sino-Singapore Tianjin Eco-city project and the Abu Dhabi Masdar City project, to smaller-scale interventions like urban revitalization and establishment of green roofs as seen in the case of Augustenborg, Malmö, Sweden. [17] [18] [19] [20] Cities that focus on the use of carbon-free sustainable energy and on managing greenhouse gas emissions can be referred to as zero-carbon cities. [21] [22] [23] [24]
With a growing popularity of the concept, in the last few decades, there has been an exponential growth in the number of eco-cities established around the globe.[ citation needed ] To assess the performance of these eco-cities and provide future guidance, the Ecocity Framework and Standards, established by Ecocity Builders with technical support from the British Columbia Institute of Technology (BCIT) School of Construction and the Environment, provides a practical methodology for this to ensure progress towards the intended goals of eco-cities. The four pillars in this framework include:
Using these, the International Eco-Cities Initiative recently identified and rated as many as 178 significant eco-city initiatives at different stages of planning and implementation around the world. [25] To be included in this census, initiatives needed to be at least district-wide in their scale, covering a variety of sectors, and have official policy status. Although such schemes display great variety in their ambitions, scale, and conceptual underpinnings, since the late 2000s there has been an international proliferation of frameworks of urban sustainability indicators and processes designed to be implemented across different contexts. [26] This may suggest that a process of eco-city 'standardization' is underway.
VTT Technical Research Centre of Finland has formulated an EcoCity concept tailored to address the unique requirements of developing countries and emerging economies. Prominent reference examples include EcoCity Miaofeng in China, EcoNBC in Egypt, EcoGrad in St. Petersburg, Russia, UN Gigiri in Kenya, and MUF2013 in Tanzania. The modern challenges confronting cities, such as climate change and its interconnected social and technological issues, encompass climate mitigation, urban sustainability, housing affordability, integrated planning, energy accessibility, local capacity building, citizen engagement, and overarching concerns like gender equality and poverty reduction. VTT's EcoCity concept effectively addresses these challenges through collaborative partnerships with local stakeholders, enabling tailored solutions that align with specific local socio-economic contexts. [9]
Richard Register once stated that "An ecocity is an ecologically healthy city. No such city exists". [27] Despite the conceptual ecological benefits of eco-cities, actual implementation can be difficult to attain. The conversion of existing cities to eco-cities is uncommon because the infrastructure, both in terms of the physical city layout and local bureaucracy, are often major insurmountable obstacles to large-scale sustainable development. [28] The high cost of the technological integration necessary for eco-city development is a major challenge, as many cities either can't afford, or are not willing to take on, the extra costs. [29] Such issues, along with the added challenges and limits to retrofitting existing cities contribute to the establishment of newly constructed eco-cities. Along with this, the costs and infrastructure development needed to manage these large scale, two-pronged projects extend beyond the capabilities of most cities. [29] In addition, many cities around the world are currently struggling to maintain the status quo, with budgetary issues, low growth rates, and transportation inefficiencies, that encourage reactive, coping policies. [29] While there are many examples worldwide, the development of eco-cities is still limited due to the vast challenges and high costs associated with sustainability.
Eco-cities have been developed as a response to present-day unsustainable systems that exist in our cities. Simultaneously, there have been other concepts like smart cities, sustainable cities, and biophilic cities that also strive towards achieving sustainability in cities through different approaches. Owing to ambiguity in their definitions and closely related criteria defined to achieve their goals, these concepts, despite their varying approaches, are often used interchangeably. [30]
Looking at the patterns of progress in the last few decades of city construction towards sustainability, Valaria Saiu (University of Cagliari) poses one major criticism through the existence of a theory-practice gap caused by economic and ethical conflicts and risks that generate socio-spatial utopias. [31] She identifies three pitfalls in the concept of sustainable cities (and therefore, eco-cities):
Another larger conceptual criticism faced by eco-cities stems from the ambiguity in the definition of sustainability as a term. This has been further elaborated by Mike Hodson and Simon Marvin in their article titled 'Urbanism in the Anthropocene: Ecological Urbanism or Premium Ecological Enclaves' where they noted "We have tended to refer to sustainability in a generic sense, and our discussions of sustainability could be employed to anything that has sustainable as an adjective". [36] As a result of this, a widespread trend has been observed in the growing number of eco-cities developed over the past two decades that claim to combat our current global climate-change challenges. Many of these cities are found to be established in isolation from other existing urban centers due to the nature of their ownership.[ citation needed ] Owing to this isolation, internalization of resource-flows contribute towards a shallow sense of ecological sustainability in such cities. [36]
With regard to methods of emissions counting cities can be challenging as production of goods and services within their territory can be related either to domestic consumption or exports. Conversely the citizens also consume imported goods and services. To avoid double counting in any emissions calculation it should be made clear where the emissions are to be counted: at the site of production or consumption. This may be complicated given long production chains in a globalized economy. Moreover, the embodied energy and consequences of large-scale raw material extraction required for renewable energy systems and electric vehicle batteries is likely to represent its own complications – local emissions at the site of utilization are likely to be very small but life-cycle emissions can still be significant. [37]
Eco-cities have also been criticized to have biases towards the economic and environmental pillars of sustainability while neglecting the social pillar.[ citation needed ] The practical translations of the concept have faced criticism as eco-cities have been driven by the demand for bounded ecological security. [36] By offering "premium ecological enclaves" factoring ecological security as an outcome of private investments driving the construction of eco-cities, the existing examples of eco-cities are criticized for not being truly sustainable solutions. [36] On the contrary, by placing this concept in the meta-narrative of sustainable cities, these have also been further criticized for celebrating this fragmentation of society through the development of gated communities and premium ecological enclaves isolated from the real global scale of issues in today's ecological crisis. For instance, the eco-cities of Masdar and Hong Kong pose homogeneous visions, but have been criticized to be the source of fragmentation of urban society.
The term "Frankenstein Urbanism" [38] was used by Federico Cugurullo to metaphorically symbolize this criticism of the concept that increases social stratification in exchange for ecological security, creating isolated entities that could work perfectly within themselves, but fall apart when brought in a larger view. [39]
An ecovillage is a traditional or intentional community that aims to become more socially, culturally, economically and/or environmentally sustainable. An ecovillage strives to have the least possible negative impact on the natural environment through the intentional physical design and behavioural choices of its inhabitants. It is consciously designed through locally owned, participatory processes to regenerate and restore its social and natural environments. Most range from a population of 50 to 250 individuals, although some are smaller, and traditional ecovillages are often much larger. Larger ecovillages often exist as networks of smaller sub-communities. Some ecovillages have grown through like-minded individuals, families, or other small groups—who are not members, at least at the outset—settling on the ecovillage's periphery and participating de facto in the community. There are currently more than 10,000 ecovillages around the world.
Urban ecology is the scientific study of the relation of living organisms with each other and their surroundings in an urban environment. An urban environment refers to environments dominated by high-density residential and commercial buildings, paved surfaces, and other urban-related factors that create a unique landscape. The goal of urban ecology is to achieve a balance between human culture and the natural environment.
Sustainable urban infrastructure expands on the concept of urban infrastructure by adding the sustainability element with the expectation of improved and more resilient urban development. In the construction and physical and organizational structures that enable cities to function, sustainability also aims to meet the needs of the present generation without compromising the capabilities of the future generations.
Dongtan was a planned development described as an eco-city on the island of Chongming in Shanghai, China that was never built. Design began in 2005, and by 2010 the development had stalled. Adjacent to booming Shanghai, designers claimed Dongtan would be the world's first truly sustainable new urban development. Dongtan was presented at the United Nations World Urban Forum by China as an example of a purpose-built eco-city.
Metabolic rift is a theory of ecological crisis tendencies under the capitalist mode of production that sociologist John Bellamy Foster ascribes to Karl Marx. Quoting Marx, Foster defines this as the "irreparable rift in the interdependent process of social metabolism". Foster argues that Marx theorized a rupture in the metabolic interaction between humanity and the rest of nature emanating from capitalist agricultural production and the growing division between town and country.
A Sustainable habitat is an ecosystem that produces food and shelter for people and other organisms, without resource depletion and in such a way that no external waste is produced. Thus the habitat can continue into the future tie without external infusions of resources. Such a sustainable habitat may evolve naturally or be produced under the influence of man. A sustainable habitat that is created and designed by human intelligence will mimic nature, if it is to be successful. Everything within it is connected to a complex array of organisms, physical resources, and functions. Organisms from many different biomes can be brought together to fulfill various ecological niches.
A Zero-Energy Building (ZEB), also known as a Net Zero-Energy (NZE) building, is a building with net zero energy consumption, meaning the total amount of energy used by the building on an annual basis is equal to the amount of renewable energy created on the site or in other definitions by renewable energy sources offsite, using technology such as heat pumps, high efficiency windows and insulation, and solar panels.
A sustainable city, eco-city, or green city is a city designed with consideration for the social, economic, and environmental impact, as well as a resilient habitat for existing populations. This is done in a way that does not compromise the ability of future generations to experience the same. The UN Sustainable Development Goal 11 defines sustainable cities as those that are dedicated to achieving green sustainability, social sustainability and economic sustainability. In accordance with the UN Sustainable Development Goal 11, a sustainable city is defined as one that is dedicated to achieving green, social, and economic sustainability. They are committed to this objective by facilitating opportunities for all through a design that prioritizes inclusivity as well as maintaining a sustainable economic growth. Furthermore, the objective is to minimize the inputs of energy, water, and food, and to drastically reduce waste, as well as the outputs of heat, air pollution. Richard Register, a visual artist, first coined the term ecocity in his 1987 book Ecocity Berkeley: Building Cities for a Healthy Future, where he offers innovative city planning solutions that would work anywhere. Other leading figures who envisioned sustainable cities are architect Paul F Downton, who later founded the company Ecopolis Pty Ltd, as well as authors Timothy Beatley and Steffen Lehmann, who have written extensively on the subject. The field of industrial ecology is sometimes used in planning these cities.
In ecology, urban ecosystems are considered a ecosystem functional group within the intensive land-use biome. They are structurally complex ecosystems with highly heterogeneous and dynamic spatial structure that is created and maintained by humans. They include cities, smaller settlements and industrial areas, that are made up of diverse patch types. Urban ecosystems rely on large subsidies of imported water, nutrients, food and other resources. Compared to other natural and artificial ecosystems human population density is high, and their interaction with the different patch types produces emergent properties and complex feedbacks among ecosystem components.
Environmental policy in China is set by the National People's Congress and managed by the Ministry of Environmental Protection of the People's Republic of China. Under the Ministry of Environmental Protection of the People's Republic of China, the Department of Policies, Laws, and Regulations is in charge of establishing and strengthening basic laws and policies such as environmental laws, administrative policies and economical regulations. It is also responsible for the development of national environmental protection policy and macro strategy.
Regenerative design is about designing systems and solutions that work with or mimic the ways that natural ecosystems return energy from less usable forms to more usable forms. Regenerative design uses systems thinking and other approaches to create resilient and equitable systems that integrate the needs of society and the well-being of nature. Regenerative design is an active topic of discussion in engineering, economics, medicine, landscape design, food systems, and urban design & community development generally.
Ecological design or ecodesign is an approach to designing products and services that gives special consideration to the environmental impacts of a product over its entire lifecycle. Sim Van der Ryn and Stuart Cowan define it as "any form of design that minimizes environmentally destructive impacts by integrating itself with living processes." Ecological design can also be defined as the process of integrating environmental considerations into design and development with the aim of reducing environmental impacts of products through their life cycle.
A zero-carbon city is a goal of city planners that can be variously defined. In a narrower sense of energy production and use, a zero-carbon city is one that generates as much or more carbon-free sustainable energy as it uses. In a broader sense of managing greenhouse gas emissions, a zero-carbon city is one that reduces its carbon footprint to a minimum by using renewable energy sources; reducing all types of carbon emissions through efficient urban design, technology use and lifestyle changes; and balancing any remaining emissions through carbon sequestration. Since the supply chains of a city stretch far beyond its borders, Princeton University's High Meadows Environmental Institute suggests using a transboundary definition of a net-zero carbon city as "one that has net-zero carbon infrastructure and food provisioning systems".
Caofeidian District, formerly known as Tanghai County, is a newly developed district located in Tangshan in the Bohai Sea coastal area of Hebei Province, China. The district spans an area of 1,595 square kilometres (616 sq mi), and has a population of about 352,100 as of 2020.
Micro-sustainability is the portion of sustainability centered around small scale environmental measures that ultimately affect the environment through a larger cumulative impact. Micro-sustainability centers on individual efforts, behavior modification, education and creating attitudinal changes, which result in an environmentally conscious individual. Micro-sustainability encourages sustainable changes through "change agents"—individuals who foster positive environmental action locally and inside their sphere of influence. Examples of micro-sustainability include recycling, power saving by turning off unused lights, programming thermostats for efficient use of energy, reducing water usage, changing commuting habits to use less fossil fuels or modifying buying habits to reduce consumption and waste. The emphasis of micro-sustainability is on an individual's actions, rather than organizational or institutional practices at the systemic level. These small local level actions have immediate community benefits if undertaken on a widespread scale and if imitated, they can have a cumulative broad impact.
Green urbanism has been defined as the practice of creating communities beneficial to humans and the environment. According to Timothy Beatley, it is an attempt to shape more sustainable places, communities and lifestyles, and consume less of the world's resources. Urban areas are able to lay the groundwork of how environmentally integrated and sustainable city planning can both provide and improve environmental benefits on the local, national, and international levels. Green urbanism is interdisciplinary, combining the collaboration of landscape architects, engineers, urban planners, ecologists, transport planners, physicists, psychologists, sociologists, economists and other specialists in addition to architects and urban designers.
Sustainable urbanism is both the study of cities and the practices to build them (urbanism), that focuses on promoting their long term viability by reducing consumption, waste and harmful impacts on people and place while enhancing the overall well-being of both people and place. Well-being includes the physical, ecological, economic, social, health and equity factors, among others, that comprise cities and their populations. In the context of contemporary urbanism, the term cities refers to several scales of human settlements from towns to cities, metropolises and mega-city regions that includes their peripheries / suburbs / exurbs. Sustainability is a key component to professional practice in urban planning and urban design along with its related disciplines landscape architecture, architecture, and civil and environmental engineering. Green urbanism and ecological urbanism are other common terms that are similar to sustainable urbanism, however they can be construed as focusing more on the natural environment and ecosystems and less on economic and social aspects. Also related to sustainable urbanism are the practices of land development called Sustainable development, which is the process of physically constructing sustainable buildings, as well as the practices of urban planning called smart growth or growth management, which denote the processes of planning, designing, and building urban settlements that are more sustainable than if they were not planned according to sustainability criteria and principles.
Christie Walk is a model ecological cohousing development in central Adelaide, Australia. It consists of 27 dwellings on a 2,000 square metres site. It was designed by local architect Paul Downton and completed in 2006. Its innovative aspects include energy- and water-saving measures, use of ethical finance and use of recycled non-toxic materials.
'Net positive', from Positive Development (PD) theory, is a paradigm in sustainable development and design. PD theory was first detailed in Positive Development (2008), and detailed in Net-Positive Design (2020). A net positive system/structure would 'give back to nature and society more than it takes' over its life cycle. In contrast, conventional sustainable design and development, in the real-world context of excess population growth, biodiversity loss, cumulative pollution, wealth disparities and social inequities closes off future options. To reverse the overshoot of planetary boundaries, a 'positive Development' would, among other sustainability criteria, increase nature beyond pre-urban or pre-industrial conditions.
Eco-Citiesin China are ambitious, planned urban development projects that serve as a key component of China’s climate change and urbanization strategies, which aim to integrate environmental sustainability with urban planning and design. These cities are envisioned as models of sustainable development, seeking to address the pressing challenges of rapid urbanization, environmental degradation, and resource constraints in China. With their emphasis on green technologies, low-carbon infrastructure, and eco-friendly practices, Chinese eco-cities strive to create livable, harmonious, and ecologically conscious urban environments.
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