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A megalopolis (sometimes called a megapolis; also megaregion, or supercity) is typically defined as a group of two or more roughly adjacent metropolitan areas, which may be somewhat separated or may merge into a continuous urban region.
- 1 History of term megalopolis
- 2 Definitions
- 3 Africa
- 4 North America
- 5 South America
- 6 Asia
- 7 Europe
- 8 Oceania
- 9 Megalopolis in Fiction
- 10 See also
- 11 References
- 12 External links
History of term megalopolisEdit
The term was coined by Patrick Geddes in his 1915 book Cities in Evolution, and used by Oswald Spengler in his 1918 book The Decline of the West, and Lewis Mumford in his 1938 book The Culture of Cities, which described it as the first stage in urban overdevelopment and social decline. Later, it was used by Jean Gottmann in his landmark 1961 study, Megalopolis: The Urbanized Northeastern Seaboard of the United States, to describe what is now commonly known as the Northeast megalopolis a.k.a. BosWash. The term has been interpreted as meaning "supercity". In 1994 the magazine National Geographic (Vol 186, No.1 July 1994) featured a "Double Map Supplement: Megalopolis." of Boston to Washington Circa 1830 and on the flip-side a contemporary (1994) map of the same region to coincide with the 33 page feature article "Breaking New Ground: Boston" by William S. Ellis Photographs Joel Sartore. The contemporary 1994 map cites the term Megalopolis being first used in 1961 to refer to the BosWash region.
Megalopolis is often spelled Megapolis. Both are derived from μέγας (mégas) in Greek meaning 'great' and πόλις (pólis) meaning 'city', therefore literally a 'great city' (compare "megacity"). Because in Greek, πόλις is feminine, the etymologically correct term is megalopolis. Literally, megalopolis in Greek means a city of exaggerated size where the prefix megalo- represents a quantity of exaggerated size. The Ancient Greek city of Megalopolis was formed by the Arcadian League by bringing together smaller communities.
A megalopolis, also known as a megaregion, is a clustered network of cities. Gottmann defined its population as 25 million. Doxiadis defined a small megalopolis a similar cluster with a population of about 10 million. America 2050, a program of the Regional Plan Association, lists 11 megaregions in the United States and Canada. Megaregions of the United States were explored in a July 2005 report by Robert E. Lang and Dawn Dhavale of the Metropolitan Institute at Virginia Tech. A later 2007 article by Lang and Nelson uses 20 megapolitan areas grouped into 10 megaregions. The concept is based on the original Megalopolis model.
Modern interlinked ground transportation corridors, such as rail and highway, often aid in the development of megalopolises. Using these commuter passageways to travel throughout the megalopolis is informally called megaloping. This term was coined by Davide Gadren and Stefan Berteau.
In China, the official term corresponding to the meaning of "megalopolis" is 城市群 (chéngshì qún), which literally means "city cluster". In Standard for basic terminology of urban planning (GB/T 50280—98) issued in 1998, 城市群 is defined as "An area in which cities are relatively densely distributed in a certain region" but wrongly translated as "agglomeration". In addition, there used to be no clear distinction between "megalopolis" and "metropolitan area" (都市圈) in Chinese context until National Development and Reform Commission issued Guidelines on the Cultivation and Development of Modern Metropolitan Areas on Feb 19, 2019 and clarified the definition of a metropolitan area.
- Cairo–Giza–Qalyubia–Helwan–6th of October City (Greater Cairo), Egypt (16 million) The area around the Nile is also very densely populated.
- Nile River Delta Governorates (Alexandria, Beheira, Kafr el-Sheikh, Gharbia, Monufia, Qalyubia, Dakahlia, Damietta, Al Sharqia, and Port Said) have a combined population of 41,045,135. The total area of these Governorates is 18,199 square miles making the population density 2,255.4 per square mile.
- The Gauteng City Region (PWV) in South Africa, which includes the urbanised portion of Gauteng Province (Pretoria, Centurion, Midrand, Johannesburg and the Vaal Triangle, with a population of over 14 million)
- The region in Morocco including El Jadida-Casablanca-Rabat-Salé-Kenitra, concentrating in the long coastal belt, on around 250 km with a depth of 40 to 50 km, more than 11 million inhabitants.
- The Nairobi Metropolitan Region consisting of the counties of (Kajiado-Kiambu-Nairobi-Machakos-Murang'a) in Kenya, which have a combined population of 8 million people.
percent growth 2011 - 2025 (projected)
Canada: Hamilton, London, Montreal, Niagara Falls, Oshawa, Ottawa, Quebec City, Toronto, Vaughan, Windsor
percent growth 2011 - 2025 (projected)
|Major cities||Related articles|
|Quebec City–Windsor Corridor||18.4||21||14.1%||Hamilton, Kingston, Kitchener, London, Mississauga, Montreal, Oshawa, Ottawa, Peterborough, Quebec City, Toronto, Trois-Rivières, Vaughan, Windsor||Southern Ontario|
|Calgary–Edmonton Corridor||2.7||4||48.1%||Calgary, Edmonton, Red Deer, St. Albert, Airdrie||Calgary Region, Edmonton Capital Region, Central Alberta|
percent growth 2000 - 2025 (projected)
|Major cities||Related articles|
|Bajío||11||?||?%||León, Querétaro, Aguascalientes, Celaya, Irapuato, San Juan del Río, Salamanca||Bajío|
|Mexico City megalopolis||28||?||?%||Mexico City, Puebla, Cuernavaca, Toluca, Pachuca, Tula, Tlaxcala, Cuautla, Tulancingo||Mexico City megalopolis|
Constituent urban areas of each megalopolis are based on reckoning by a single American organization, the Regional Plan Association (RPA). The RPA definition of the Great Lakes Megalopolis includes some Canadian metropolitan areas with the United States including some but not all major urban centres in the Windsor-Quebec City Corridor. Note that one city, Houston, is listed in two different Megalopolis regions as defined by the RPA, (the Gulf Coast and Texas Triangle).
|Major cities||Other cities|
|Greater Buenos Aires||13,641,973||Buenos Aires; Merlo, Moreno; Quilmes; Florencio Varela, La Matanza||Lanús; Lomas de Zamora, San Martin; and Avellaneda|
The following megaregions in Colombia are expected to have nearly 93% (55 Million people) of its population by 2030, up from the current 72%. There are currently 4 major megaregions in Colombia.
|Megalopolis name||Population in 2015||Population in 2030 (projected)||Major cities|
|Bogota National Capital Metropolis||17,000,000||26,500,000||Bogotá, Soacha, Facatativá, Chía, Tunja, Fusagasugá, Zipaquirá, Madrid, Funza, Cajicá, Ubaté, Sibaté, Guaduas, Villa de Leyva and Tocancipá|
|Pacific Belt||9,000,000||14,000,000||Medellín, Cali, Bello, Pereira, Manizales, Armenia, Itagüí, Yumbo, and Palmira|
|Northeast Atlantic Region||6,000,000||10,500,000||Barranquilla, Cartagena, Santa Marta, Ciénaga, Malambo, Baranoa and Turbaco|
|Santander Belt||3,000,000||5,200,000||Bucaramanga, Cúcuta, Ocaña, and Pamplona|
Other sources show that another megaregion may be considered:
|Megalopolis name||Population in 2015||Population in 2030 (projected)||Major cities|
|Golden Triangle||29,500,000||41,000,000||Bogotá, Soacha, Medellín, Cali, Bello, Manizales, Armenia|
|Major cities||Other cities|
|Lima-Callao Megalopolis||10,523,796||Lima and Callao||Cono Norte, Cono Sur, and Cono Este|
|Major cities||Other cities|
|Caracas-Valencia Megalopolis||+9,000,000||Caracas, Valencia, and Maracay||Cagua, Maiquetía, and Guatire|
- Pearl River Delta Megalopolis (珠江三角洲) a.k.a. Guangdong-Hong Kong-Macau Greater Bay Area (粤港澳大湾区): Hong Kong, Shenzhen, Dongguan, Guangzhou, Foshan, Jiangmen, Zhongshan, Zhuhai, Macau, Huizhou (55,000,000). Pan-Pearl River Delta further includes provinces adjacent to Guangdong.
- Yangtze River Delta Megalopolis (长江三角洲): Shanghai, Nanjing, Hangzhou, Ningbo, Suzhou, Jingjiang, Wuxi, Changzhou, Zhenjiang, Yangzhou, Taizhou, Nantong, Huzhou, Jiaxing, Shaoxing, Jiangyin, Haimen, Zhangjiagang, Zhoushan, Ma'anshan (88,000,000)
- Bohai Economic Rim (环渤海经济圈): Beijing, Shenyang, Tianjin, Dalian, Anshan, Fushun, Dandong, Sinuiju, Tangshan, Yantai, Jinan, Qinhuangdao, Qingdao, Weihai (66,400,000)
- Western Taiwan Straits Economic Zone (海峡西岸经济区): Xiamen, Fuzhou, Wenzhou, Shantou, Jieyang, Chaozhou (25,000,000)
- Central Plain (中原): Kaifeng, Xinxiang, Zhengzhou, Luoyang (14,170,000)
- Central-Southern Liaoning (辽中南): Within 150 km from its center Shenyang (7.2 million), it has Fushun (3 million), Anshan City (3.6 million), Benxi (1.5 million), Liaoyang (1.8 million), Yingkou (2.2 million), Panjin (1.2 million), and Tieling (3.4 million), with a total population of 23 million. And it can be further extended to Dalian (6.2 million), Fuxin (2 million) and Dandong (2.4 million). This area used to be the most industrialized region in China but began to decline in the 1980s.
- Harbin-Changchun Megalopolis (哈长城市群) a.k.a. Northeastern Cities (东北城市群): Harbin, Qiqihar, Daqing, Changchun, Jilin City, Siping including Rason in North Korea and Vladivostok in Russia (21,832,000)
- Sichuan basin (四川盆地) a.k.a. Chengyu Megalopolis (成渝都市圈): Chengdu, Chongqing, Zigong, Luzhou (20,878,000)
- Greater Wuhan Megalopolis (大武汉都市圈): Wuhan, Huangshi, Xinyang, Jiujiang, Yueyang (20,000,000)
- Guanzhong (关中): Xi'an, Xianyang, Baoji, Weinan (16,722,000)
- Changzhutan Megalopolis (长株潭城市群) a.k.a. Greater Changsha Metropolitan Region (大长沙都市圈): Changsha, Zhuzhou, Xiangtan (12,994,400 in 2000)
In July 2012, the Economist Intelligence Unit brought out a report entitled; Supersized cities: China’s 13 megalopolises, which pinpoints the 13 emerging megalopolises in China, and highlights the demographic and income trends that are shaping their development.
- Taiheiyō Belt – Ibaraki, Saitama, Chiba, Tokyo, Kanagawa, Shizuoka, Aichi, Gifu, Mie, Kyoto, Osaka, Hyōgo, Wakayama, Okayama, Hiroshima, Yamaguchi, Fukuoka, and Ōita in Japan. (81,859,345)
- Seoul National Capital Area - Seoul, Incheon, Suwon, Goyang, Yongin, Seongnam, and the rest of Gyeonggi-do: (25,000,000)
- West Coast of the island of Taiwan - Taipei, New Taipei, Keelung, Taoyuan, Hsinchu, Taichung, Chiayi, Tainan, and Kaohsiung: (18,000,000)
Western Region Supercity of Colombo (Megapolis) with 3,687 km2 land area and currently over 7 million population comprising several municipal, urban, and town councils politically. This is planned to be spacious and modern megacity with dedicated core zones for financial, trade, industrial, educational, logistic, transport, health, sports, recreational activities and services in par with the international level. Once completed it would be one of the most livable and favored cities in the world.
- Kolkata Megalopolis - Some areas of Presidency, Medinipur and burdwan divisions. Population 65 million.
- Delhi Megalopolis - National Capital Region (India). Population 46 million.
- Mumbai Megalopolis - Mumbai Megalopolis includes Mumbai Metropolitan Region, Pune Metropolitan Region and Nashik Metropolitan Region. This area is also known as golden Triangle of Maharashtra. Population 80 million.
- Dhaka (Greater Dhaka Megalopolis consists four city Corporations: Dhaka South, Dhaka North, Gazipur, and Narayanganj and five municipals: Savar Upazila (A class), Dohar Upazila (A class), Dhamrai Upazila (A class), Tongi (Special Class), Sonargaon (B class) (17,000,000)
- Chittagong (4,009,423)
Karachi comprises six district municipal corporations. The total population is 24 million according to the 2011 census.
|1||Java||Indonesia||145||Serang, Tangerang, South Tangerang, Jakarta, Bekasi, Depok, Bogor, Sukabumi, Cimahi, Bandung, Tasikmalaya, Cirebon, Tegal, Pekalongan, Semarang, Surakarta, Yogyakarta, Madiun, Kediri, Mojokerto, Surabaya, Batu, Malang, Pasuruan, Probolinggo|
|2||Mega Manila||Philippines||40+||Manila, Calamba, Angeles, Baguio, Batangas, Dagupan, Olongapo, Bacoor|
|3||Central Thailand||Thailand||25+||Bangkok, Ayuthaya, Pattaya|
|4||Southeast Economic Zone||Vietnam||16+||Đồng Nai, Bình Dương, Ho Chi Minh City, Bà Rịa–Vũng Tàu Province, Long An, Tiền Giang|
Mega Manila is made up of 4 Regions:
- Central Luzon (11,218,117)
- Metro Manila (12,877,253)
- Calabarzon (14,414,774)
- Mimaropa excluding Palawan (2,113,891)
Total Population of Mega Manila as of 2015: (40,624,035)
Thailand, Malaysia, Singapore, Indonesia and VietnamEdit
- Bay of Bangkok Economic Rim: Bangkok–Ayutthaya–Pattaya (16,000,000)
- Sijori:Johor Bahru–Singapore–Batam–Bintan (10,000,000) 
- Red River Delta in Vietnam (Hanoi, Hai Phong, Nam Định, & Hải Dương) (10,000,000)
- Greater Tehran: A region located in Iranian Tehran and Alborz Province in central Northern Iran with its influence expanding in Qom Province, Qazvin Province and Mazandaran Province, home for at least 15 million people, it is one of the most populous urban areas in the Greater Middle East and the surrounding regions. Tehran was a small village 200 years ago when it was first chosen as the Capital city and it has been growing at a very fast rate.
(all figures extrapolated from end of 2014 and end of 2015 figures of, to middle of year 2016)
- Greater Istanbul: Includes Istanbul city proper, with continuous urbanization spilling over to neighboring provinces, as well as nearby dense population and highly industrialized areas. Istanbul, eastern counties of Tekirdağ province, entire coast of Izmit bay, and Adapazarı add up to 17.5 million population.
- Other major cities: Ankara (5 million), Izmir (includes satellites Torbalı-Aliağa-Urla-Manisa to add up to 4 million), Adana-Tarsus-Mersin (3 million), Bursa (2.1 million)
|Sydney Region||5.77||Greater Sydney (including Central Coast and Blue Mountains) (4.97 million), Newcastle and Lake Macquarie (501,000), Illawarra (300,000)|
|Port Phillip Bay Area||4.98||Greater Melbourne (including Mornington Peninsula) (4.7 million), Greater Geelong (233,429), Melton, Victoria (54,455)|
|South East Queensland||3.52||Brisbane City (1.21 million), Gold Coast (591,300), Tweed Heads (8,200), Logan City (320,500), Redland City ( 139,600 ), Moreton Bay Region ( 450,000 ), Sunshine Coast (311,000), Noosa ( 54,600 ), Ipswich ( 206,000 ), Lockyer Valley ( 40,000), Toowoomba (166,000), Somerset ( 25,500 ), Note (excluding Scenic Rim (41,700))|
Megalopolis in FictionEdit
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Judge Dredd (1977) Mega-City One is a huge fictional megalopolis-size city-state covering much of what is now the Eastern United States and some of Canada in the Judge Dredd comic book series and its spinoff series. The exact geography of the city depends on which writer and artist has done which story, but from its first appearance it has been associated with New York City's urban sprawl; originally it was presented as a future New York, which was retconned as the centre of a "Mega-City One" in the very next story. The Architects' Journal placed it at No. 1 in their list of "comic book cities".
Blade Runner (1982 Film) - Blade Runner is a 1982 neo-noir science fiction film directed by Ridley Scott, written by Hampton Fancher and David Peoples, and starring Harrison Ford, Rutger Hauer, Sean Young, and Edward James Olmos. It is a loose adaptation of Philip K. Dick's novel Do Androids Dream of Electric Sheep? (1968). The film is set in a dystopian future Los Angeles of 2019, in which synthetic humans known as replicants are bio-engineered by the powerful Tyrell Corporation to work on off-world colonies. When a fugitive group of replicants led by Roy Batty (Hauer) escapes back to Earth, burnt-out cop Rick Deckard (Ford) reluctantly agrees to hunt them down.
In William Gibson's fiction, the Sprawl is a colloquial name for the Boston-Atlanta Metropolitan Axis (BAMA), an urban sprawl environment on a massive scale, and a fictional extension of the real Northeast megalopolis. The Sprawl is a visualization of a future where virtually the entire East Coast of the United States, from Boston to Atlanta, has melded into a single mass of urban sprawl. It has been enclosed in several geodesic domes and merged into one megacity. The city has become a separate world with its own climate, no real night/day cycle, and an artificial sky that is always grey.
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