Population growth is the increase in the number of people in a population or dispersed group. Actual global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 8.1 billion in 2024. The UN projected population to keep growing, and estimates have put the total population at 8.6 billion by mid-2030, 9.8 billion by mid-2050 and 11.2 billion by 2100. However, some academics outside the UN have increasingly developed human population models that account for additional downward pressures on population growth; in such a scenario population would peak before 2100. Others have challenged many recent population projections as having underestimated population growth.
55-455: Tsuen Wan New Town is a new town in Hong Kong . It spans Tsuen Wan , Kwai Chung and the eastern part of Tsing Yi Island . Traditionally, the administrative officials of Tsuen Wan managed the area of Tsuen Wan proper, Kwai Chung, Tsing Yi Island, Ma Wan and Northeast Lantau Island . Its total development area is about 24 square kilometres (9.3 sq mi). The population of the new town
110-449: A commercial and financial centre in the region. In consequence, most of the work opportunities remained in the urban areas, forcing residents in the new towns to travel between the new towns and the city centre every day. From the 1990s on, when Hong Kong had almost no more substantial secondary industries, the industrial buildings were repurposed into offices and warehouses , or even rebuilt as residential apartments. The new towns planned in
165-591: A concept borrowed from the United Kingdom , of which Hong Kong was a colony . Kwun Tong , located in eastern Kowloon , and Tsuen Wan , located in the south-west of the New Territories , were designated as the first satellite towns, when the urban area in Hong Kong was still relatively small, restricted to the central and western parts of Kowloon Peninsula and the northern side of Hong Kong Island . Wah Fu Estate
220-529: A railway station had its town centre planned near it. Tsuen Wan New Town was distinctive in having more than one town centre, situated around Tsuen Wan station and Kwai Fong station , and later also around Tsing Yi station after Tsuen Wan New Town had expanded to Tsing Yi. With the exception of Tin Shui Wai New Town, the only new town without a clear town centre, the new towns’ town centres became vibrant business and cultural hubs of their areas. Transport
275-451: A sufficiently small time interval: A positive growth rate indicates that the population is increasing, while a negative growth rate indicates that the population is decreasing. A growth ratio of zero indicates that there were the same number of individuals at the beginning and end of the period—a growth rate may be zero even when there are significant changes in the birth rates , death rates , immigration rates , and age distribution between
330-507: A supporting town for the then- newly constructed airport in Chek Lap Kok . At present, there are nine new towns in all. New Town development slowed in the 2000s, on account of unexpectedly slow population growth. Indeed, even the development of North Lantau New Town was hindered : the population of North Lantau New Town was just 80,000 in early 2010s, less than half of the 200,000 originally planned. No additional new towns were established in
385-469: Is a separable differential equation, the population may be solved explicitly, producing a logistic function : where A = K − P 0 P 0 {\displaystyle A={\frac {K-P_{0}}{P_{0}}}} and P 0 {\displaystyle P_{0}} is the initial population at time 0. The world population growth rate peaked in 1963 at 2.2% per year and subsequently declined. In 2017,
440-515: Is approximately 801,800, with the planned capacity being 845,000. Development of the Tsuen Wan satellite town commenced in the 1950s, along with Kwun Tong satellite town. In 1961, the government of Hong Kong decided to expand the satellite town into neighbouring Kwai Chung and Tsing Yi, and Tsuen Wan New Town was established as the first new town in Hong Kong. In 1982, the Tsuen Wan District
495-452: Is in direct contrast with less developed contexts, where population growth is still happening. Globally, the rate of population growth has declined from a peak of 2.2% per year in 1963. Population growth alongside increased consumption is a driver of environmental concerns , such as biodiversity loss and climate change , due to overexploitation of natural resources for human development . International policy focused on mitigating
550-402: Is the rate at which the number of individuals in a population increases in a given time period, expressed as a fraction of the initial population. Specifically, population growth rate refers to the change in population over a unit time period, often expressed as a percentage of the number of individuals in the population at the beginning of that period. This can be written as the formula, valid for
605-494: Is vital for the new towns, and thus is planned with care. Before the development of new towns, most areas in the New Territories were poorly connected; new development required both roads and public transport. To ease the traffic between the new towns and the urban area, new roads and highways were built. For example, Tuen Mun Road and Tolo Highway were two principal highways built in the late 1970s and early 1980s to connect
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#1732848895335660-465: The Black Death , around the year 1350. A mix of technological advancement that improved agricultural productivity and sanitation and medical advancement that reduced mortality increased population growth. In some geographies, this has slowed through the process called the demographic transition , where many nations with high standards of living have seen a significant slowing of population growth. This
715-506: The DRC are witnessing a similar growth in population. The following table gives some example countries or territories: Human population projections are attempts to extrapolate how human populations will change in the future. These projections are an important input to forecasts of the population's impact on this planet and humanity's future well-being. Models of population growth take trends in human development and apply projections into
770-516: The global population to increase from 1.6 billion in 1900 to 7.7 billion by November 2019. Some of the reasons for the "Modern Rise of Population" were particularly investigated by the British health scientist Thomas McKeown (1912–1988). In his publications, McKeown challenged four theories about the population growth: Although the McKeown thesis has been heavily disputed, recent studies have confirmed
825-511: The industrial revolution . The most significant increase in the world's population has been since the 1950s, mainly due to medical advancements and increases in agricultural productivity . Due to its dramatic impact on the human ability to grow food, the Haber process , named after one of its inventors, the German chemist Fritz Haber , served as the "detonator of the population explosion ", enabling
880-497: The population is declining , especially in Eastern Europe , mainly due to low fertility rates , high death rates and emigration . In Southern Africa , growth is slowing due to the high number of AIDS-related deaths. Some Western Europe countries might also experience population decline. Japan's population began decreasing in 2005. The United Nations Population Division projects world population to reach 11.2 billion by
935-460: The slums of nearby Ngau Tau Kok . Thus, in the late 1950s, Kwun Tong became the first developed satellite town. Around the same time, the government also began to develop Tsuen Wan as a satellite town. In 1967, using a similar concept on a smaller scale, it also built Wah Fu Estate , which lay to the west of Aberdeen in Pok Fu Lam , in a remote corner on the southern side of Hong Kong Island. In
990-598: The 1950s, most of the population in Hong Kong lived in Hong Kong's urban area, namely the central and western parts of the Kowloon Peninsula and the northern coast of Hong Kong Island. After the Second World War , however, the population boomed. The drastic growth was due to prolonged political unrest in Mainland China , which brought a large number of refugees to Hong Kong from the 1950s to the early 1970s and led to
1045-480: The 1970s to build New Towns in other areas as well. As part of this second phase, the development of Tai Po New Town , Yuen Long New Town and Fanling-Sheung Shui New Town began in 1976, 1977 and 1978 respectively; the extension of the Tsuen Wan New Town to Tsing Yi Town also began in the mid-1970s, and was regarded as part of the second phase of new-town development. The third phase of new-town development
1100-598: The 1980s and 1990s had either no more industrial areas (e.g. Tin Shui Wai New Town and Tung Chung), or industrial areas with only high-value-adding industries allowed (e.g. Tseung Kwan O Industrial Estate 將軍澳工業邨). Typically, a new town was planned and developed around a town centre, which was the town's business, cultural and traffic hub. For example, in the town centres of Tuen Mun New Town and Sha Tin New Town, one can find shopping centres, public libraries, theatres, government offices, parks, and bus terminuses. Any new town with
1155-617: The 2000s and early 2010s, and new-town development was restricted to further development of the ones already developed. In response to excess housing demand since the late 2000s, however, which resulted in extremely high housing prices and rents as well as very long queues in pending for public housing, government considered to add to the number of new towns again. In the early 2010s, the government proposed to build new towns in Hung Shui Kiu , Kwu Tung , North Fanling and Ping Che - Ta Kwu Ling . The proposals are matters of heated public debate; if
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#17328488953351210-449: The 2000s, owing to lower population growth . As demand rose in the housing market and it became difficult for residents to buy new homes, the Hong Kong government suggested that new towns be built again in the 2010s, hoping thereby to increase the supply in the private housing market and provide more flats for public housing . For example, Hung Shui Kiu New Town , Kwu Tung North New Town and North Fanling New Town have been proposed by
1265-454: The UN projected that the world population, 8 billion as of 2023 , would peak around the year 2086 at about 10.4 billion, and then start a slow decline, assuming a continuing decrease in the global average fertility rate from 2.5 births per woman during the 2015–2020 period to 1.8 by the year 2100 (the medium-variant projection). The UN’s 2024 report has revised the peak population to 10.3 billion in
1320-531: The city centre, lowering both residents’ travel expenditures and the burden on the transportation system. For this reason, the government planned industrial areas near all the new towns it planned before the 1980s: The idea did not work, however. In the 1980s, when the new towns were developing at their highest pace, secondary sector industries in Hong Kong began moving to the Mainland China, where costs were much lower, and Hong Kong gradually emerged instead as
1375-522: The end of the 21st century. The Institute for Health Metrics and Evaluation projects that the global population will peak in 2064 at 9.73 billion and decline to 8.89 billion in 2100. A 2014 study in Science concludes that the global population will reach 11 billion by 2100, with a 70% chance of continued growth into the 22nd century. The German Foundation for World Population reported in December 2019 that
1430-457: The entire new town had been built; the estimated population in Sha Tin rose to 500,000 in the planning of the early 1970s. In the corresponding areas, land was reclaimed to create new space for some of the new towns. These newly developed towns, maturing in the 1980s, provided new homes to more than 1 million Hong Kong people. The first phase having succeeded, Hong Kong government proposed later in
1485-477: The estimated annual growth rate was 1.1%. The CIA World Factbook gives the world annual birthrate, mortality rate, and growth rate as 1.86%, 0.78%, and 1.08% respectively. The last 100 years have seen a massive fourfold increase in the population, due to medical advances , lower mortality rates, and an increase in agricultural productivity made possible by the Green Revolution . The annual increase in
1540-607: The future. These models use trend-based-assumptions about how populations will respond to economic, social and technological forces to understand how they will affect fertility and mortality , and thus population growth. The 2022 projections from the United Nations Population Division (chart #1) show that annual world population growth peaked at 2.3% per year in 1963, has since dropped to 0.9% in 2023, equivalent to about 74 million people each year, and could drop even further to minus 0.1% by 2100. Based on this,
1595-561: The global human population grows by 2.6 people every second, and could reach 8 billion by 2023. According to United Nations population statistics, the world population grew by 30%, or 1.6 billion humans, between 1990 and 2010. In number of people the increase was highest in India (350 million) and China (196 million). Population growth rate was among highest in the United Arab Emirates (315%) and Qatar (271%). Many of
1650-505: The government and currently under public consultation. Land use is carefully planned in new towns, and development sets aside plenty of room for public housing projects. Highways, tunnels, bridges and railways have been built for accessibility. The first few new towns, such as Tuen Mun, Sha Tin, Yuen Long and Tai Po, were intended to be self-reliant, each having not only residential areas but also commercial, industrial and recreational areas, such that residents would not need to travel between
1705-459: The government as part of the urban area. The first phase of new town development was unveiled in 1973, including Tsuen Wan New Town , which as a satellite town was not brought to full-scale development, and also Sha Tin New Town and Tuen Mun New Town . These new towns were intended to accommodate a few hundred thousand people each. For example, according to the first plan in 1961, the government planned to accommodate 360,000 people in Sha Tin once
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1760-531: The impact of human population growth is concentrated in the Sustainable Development Goals which seeks to improve the standard of living globally while reducing the impact of society on the environment while advancing human well-being. World population has been rising continuously since the end of the Black Death , around the year 1350. Population began growing rapidly in the Western world during
1815-473: The late 1960s and the 1970s, another stage of new-town developments was launched and the term "new town" was officially adopted. As most flat lands in Kowloon and Hong Kong Island had already been developed, the government proposed to build new towns in New Territories, a largely rural area at that time. Kwun Tong, as the first satellite town, was not considered as a new town, as it was part of Kowloon and regarded by
1870-433: The new towns and the city centre for work and leisure. To this end, a few industrial estates, such as Tai Po Industrial Estate and Yuen Long Industrial Estate , were built to provide work opportunities for the residents in the nearby new towns. Although the government successfully turned most of the new towns's town centres into vibrant commercial and cultural centres in their areas, the overall objective of self-reliance for
1925-588: The new towns failed, since most residents still had their jobs in Hong Kong Island and Kowloon; the objective became impossible to accomplish when most of Hong Kong's secondary sector industries had moved to China . The British government had developed new towns in the United Kingdom to help relocate displaced populations after the Second World War . This experience influenced the colonial Hong Kong government's development of new towns in Hong Kong. Before
1980-518: The new towns in western New Territories and eastern New Territories to New Kowloon; tunnels (e.g. Lion Rock Tunnel and Tate's Cairn Tunnel ) and bridges (e.g. Tsing Yi Bridge ) were also built to shorten travel times. Public transport was also developed. Many new towns were planned with new railway lines (e.g. MTR stations in Tsuen Wan New Town, Tseung Kwan O New Town, Tung Chung and the Ma On Shan Rail for Ma On Shan ). The Kowloon–Canton Railway
2035-671: The number of living humans peaked at 88.0 million in 1989, then slowly declined to 73.9 million in 2003, after which it rose again to 75.2 million in 2006. In 2017, the human population increased by 83 million. Generally, developed nations have seen a decline in their growth rates in recent decades, though annual growth rates remain above 2% in some countries of the Middle East and Sub-Saharan Africa , and also in South Asia , Southeast Asia , and Latin America . In some countries
2090-400: The objective that the new towns should be self-reliant. Besides residential areas, then, the government included commercial, industrial and recreational areas in the planning of the new towns in the first two phases, such that the new towns could provide their residents with enough job opportunities. The attempt, if successful, could minimise the need for transportation between the new towns and
2145-433: The one hand, the government began to provide public housing, and on the other hand it proposed to develop “satellite towns” in undeveloped areas in order to make more lands available for the increasing housing need. At first, it identified Tsuen Wan and Kwai Chung as sites for the first satellite towns, but it then found that Kwun Tong , located in then-underdeveloped eastern Kowloon, would be attractive to people living in
2200-589: The only links to Kowloon, the traffic between these new towns and the urban area was highly congested, prompting the government to study new road and rail links. The situation improved when Tai Lam Tunnel opened in 1998. These new towns in the north-western New Territories were finally connected to urban areas with direct railway service when KCR West Rail (now part of the Tuen Ma Line ) opened in 2003. New towns’ residential areas have both private and public housing. When new towns were first developed, land reclamation
2255-439: The population has reached its carrying capacity , it will stabilize and the exponential curve will level off towards the carrying capacity, which is usually when a population has depleted most its natural resources . In the world human population, growth may be said to have been following a linear trend throughout the last few decades. The growth of a population can often be modelled by the logistic equation where As it
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2310-484: The proposals are adopted, construction work is expected to begin in the mid-2010s, and its first phase to end in the early 2020s. The planning of the new towns was, in colonial history, the first major attempt at horizontal coordination among government departments. Regarding it as a cornerstone of Hong Kong social policy, the colonial government aimed to alleviate urban overpopulation and improve quality of life for ordinary citizens. It planned all new towns carefully, with
2365-479: The rapid advance of Hong Kong's economy from the 1970s to the early 1990s. The government in the 1950s originally had no plans to deal with the problem of housing the increasing population, until the Shek Kip Mei Fire in 1953 destroyed the homes of 58,203 people in a shanty town . The government, for the first time, built public housing to accommodate the victims and found a change in housing policy essential. On
2420-413: The success of these new towns, and the experience gained from building them, the government launched further stages of new-town development in subsequent decades. To date, nine new towns have been built, and about half of the Hong Kong population lives in these newly developed areas. After the government had built a new town on Lantau Island in the 1990s, the pace at which it developed new towns slowed in
2475-505: The town is also considered a part of the Hong Kong metro area by the Planning Department and Urban Renewal Authority . Along with Hong Kong Island and Kowloon , it is the only area in the New Territories classified as the core urban area of Hong Kong. Part of this is because the town was developed early and is not geographically separated from Kowloon by hills. Also, there are no New Territories taxis service within most parts of
2530-421: The town, unlike other new towns in the New Territories. 22°22′25″N 114°06′59″E / 22.3737°N 114.1163°E / 22.3737; 114.1163 New towns of Hong Kong The Hong Kong government started developing new towns in the 1950s to accommodate Hong Kong's booming population . During the first phase of development, the newly developed towns were called " satellite towns ",
2585-411: The two times. A related measure is the net reproduction rate . In the absence of migration, a net reproduction rate of more than 1 indicates that the population of females is increasing, while a net reproduction rate less than one ( sub-replacement fertility ) indicates that the population of females is decreasing. Most populations do not grow exponentially, rather they follow a logistic model . Once
2640-406: The value of his ideas. His work is pivotal for present day thinking about population growth, birth control, public health and medical care. McKeown had a major influence on many population researchers, such as health economists and Nobel prize winners Robert W. Fogel (1993) and Angus Deaton (2015). The latter considered McKeown as "the founder of social medicine ". The "population growth rate"
2695-680: The world's countries, including many in Sub-Saharan Africa , the Middle East , South Asia and South East Asia , have seen a sharp rise in population since the end of the Cold War . The fear is that high population numbers are putting further strain on natural resources, food supplies, fuel supplies, employment, housing, etc. in some of the less fortunate countries. For example, the population of Chad has ultimately grown from 6,279,921 in 1993 to 10,329,208 in 2009, further straining its resources. Vietnam , Mexico , Nigeria , Egypt , Ethiopia , and
2750-572: The year 2084. However, estimates outside of the United Nations have put forward alternative models based on additional downward pressure on fertility (such as successful implementation of education and family planning goals in the UN's Sustainable Development Goals ) which could result in peak population during the 2060–2070 period rather than later. Even though the global fertility rate continues to fall, chart #2 shows that because of population momentum
2805-539: Was also built in a remote corner on the southern side of Hong Kong Island, with similar concepts but at a smaller scale. Plans to develop new areas were continued in the late 1960s and 1970s, when the name “new town” was officially adopted. As most flat lands in Hong Kong Island and Kowloon had already been developed, the government proposed to build new towns in the New Territories, a largely rural area at that time. The first phase of new-town development, which began in 1973, included Tsuen Wan , Sha Tin and Tuen Mun . With
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#17328488953352860-452: Was an important way of gaining land to build on. Large areas were gained by land reclamations in Sha Tin, Tsuen Wan, Tuen Mun, Tai Po, Tsing Yi, Ma On Shan, Tin Shui Wai, Tseung Kwan O and Tung Chung – 7 of 9 new towns, with Fanling-Sheung Shui New Town and Yuen Long New Town being the only exceptions. Population growth The world human population has been growing since the end of
2915-484: Was created under the District Administration Scheme . In 1985, with the explosion of population in the new town, Kwai Chung and Tsing Yi were spun off to form the new Kwai Tsing District . Thus, the town is now under two administrative districts. In some recent official reports, Kwai Chung New Town and Tsing Yi New Town are separated from Tsuen Wan New Town. Despite being a part of the New Territories ,
2970-418: Was electrified in the early 1980s in order to provide convenient transport to the new towns at Fanling-Sheung Shui, Tai Po and Sha Tin. New towns in the north-western New Territories were connected by Light Rail Transit , although at the time they remained the only new towns without direct railway service to the urban areas. Because there was no railway transport, and Tuen Mun Road and Castle Peak Road were
3025-406: Was proposed in the 1980s, including Tseung Kwan O New Town , Tin Shui Wai New Town and Ma On Shan , the last of which was officially considered as an extension of Sha Tin New Town. The fourth phase of new-town development, so far the last, commenced in 1996 and developed North Lantau New Town (only Tung Chung was developed, although originally the plan included the area near Tai Ho Wan ), as
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