Land reclamation, usually known as reclamation, and also known as land fill (not to be confused with a landfill), is the process of creating new land from oceans, riverbeds, or lake beds. The land reclaimed is known as reclamation ground or land fill.
A landfill site is a site for the disposal of waste materials by burial. It is the oldest form of waste treatment. Historically, landfills have been the most common method of organized waste disposal and remain so in many places around the world.
A stream bed or streambed is the channel bottom of a stream or river, the physical confine of the normal water flow. The lateral confines or channel margins are known as the stream banks or river banks, during all but flood stage. Under certain conditions a river can branch from one stream bed to multiple stream beds. A flood occurs when a stream overflows its banks and flows onto its flood plain. As a general rule, the bed is the part of the channel up to the normal water line, and the banks are that part above the normal water line. However, because water flow varies, this differentiation is subject to local interpretation. Usually, the bed is kept clear of terrestrial vegetation, whereas the banks are subjected to water flow only during unusual or perhaps infrequent high water stages and therefore might support vegetation some or much of the time.
In a number of other jurisdictions, including parts of the United States,the term "reclamation" can refer to returning disturbed lands to an improved state. In Alberta, Canada, for example, reclamation is defined by the provincial government as "The process of reconverting disturbed land to its former or other productive uses." In Oceania it is frequently referred to as land rehabilitation.
The United States of America (USA), commonly known as the United States or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the most populous city is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.
Alberta is a western province of Canada. With an estimated population of 4,067,175 as of 2016 census, it is Canada's fourth most populous province and the most populous of Canada's three prairie provinces. Its area is about 660,000 square kilometres (250,000 sq mi). Alberta and its neighbour Saskatchewan were districts of the Northwest Territories until they were established as provinces on September 1, 1905. The premier is Jason Kenney as of April 30, 2019.
Oceania is a geographic region which includes Australasia, Melanesia, Micronesia and Polynesia. Spanning the eastern and western hemispheres, Oceania covers an area of 8,525,989 square kilometres (3,291,903 sq mi) and has a population of 40 million. Situated in the southeast of the Asia-Pacific region, Oceania, when compared to continental regions, is the smallest in land area and the second smallest in population after Antarctica.
Land reclamation can be achieved with a number of different methods. The most simple method involves filling the area with large amounts of heavy rock and/or cement, then filling with clay and dirt until the desired height is reached. The process is called "infilling"and the material used to fill the space is generally called "infill". Draining of submerged wetlands is often used to reclaim land for agricultural use. Deep cement mixing is used typically in situations in which the material displaced by either dredging or draining may be contaminated and hence needs to be contained. Land dredging is also another method of land reclamation. It is the removal of sediments and debris from the bottom of a body of water. It is commonly used for maintaining reclaimed land masses as sedimentation, a natural process, fills channels and harbors naturally.
A cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Cement is the most widely used material in existence and is only behind water as the planet's most-consumed resource.
A wetland is a distinct ecosystem that is inundated by water, either permanently or seasonally, where oxygen-free processes prevail. The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation of aquatic plants, adapted to the unique hydric soil. Wetlands play a number of functions, including water purification, water storage, processing of carbon and other nutrients, stabilization of shorelines, and support of plants and animals. Wetlands are also considered the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal life. Whether any individual wetland performs these functions, and the degree to which it performs them, depends on characteristics of that wetland and the lands and waters near it. Methods for rapidly assessing these functions, wetland ecological health, and general wetland condition have been developed in many regions and have contributed to wetland conservation partly by raising public awareness of the functions and the ecosystem services some wetlands provide.
Agriculture is the science and art of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Pigs, sheep and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture into the twenty-first.
Instances where the creation of new land was for the need of human activities.
Human behavior is the response of individuals or groups of humans to internal and external stimuli. It refers to the array of every physical action and observable emotion associated with individuals, as well as the human race. While specific traits of one's personality and temperament may be more consistent, other behaviors will change as one moves from birth through adulthood. In addition to being dictated by age and genetics, behavior, driven in part by thoughts and feelings, is an insight into individual psyche, revealing among other things attitudes and values. Social behavior, a subset of human behavior, study the considerable influence of social interaction and culture. Additional influences include ethics, social environment, authority, persuasion and coercion.
Notable examples include:
Saadiyat Island is a tourism-cultural project for nature and Emirati heritage and culture. The project, under development, consists of a large, low-lying island, 500 metres (1,600 ft) off the coast of Abu Dhabi island, UAE. A mixed commercial, residential, and leisure project is currently under construction on the island, expected to be completed in 2020. Saadiyat Island is expected to become Abu Dhabi's cultural centre, mostly for the Island’s Cultural District that is expected to include eight museums.
Mumbai is the capital city of the Indian state of Maharashtra. As of 2011 it is the most populous city in India with an estimated city proper population of 12.4 million. The larger Mumbai Metropolitan Region is the second-most-populous metropolitan area in India, with a population of 21.3 million as of 2016. Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbour. In 2008, Mumbai was named an alpha world city. It is also the wealthiest city in India, and has the highest number of millionaires and billionaires among all cities in India. Mumbai is home to three UNESCO World Heritage Sites: the Elephanta Caves, Chhatrapati Shivaji Maharaj Terminus, and the city's distinctive ensemble of Victorian and Art Deco buildings.
India, also known as the Republic of India, is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia.
Nice Côte d'Azur Airport is an international airport located 3.2 NM southwest of Nice, in the Alpes-Maritimes départment of France. It is the third busiest airport in France and serves as a focus city for Air France and an operating base for easyJet. In 2018, it handled 13,850,561 passengers. The airport is positioned 7 km (4 mi) west of the city centre, and is the principal port of arrival for passengers to the Côte d'Azur.
France, officially the French Republic, is a country whose territory consists of metropolitan France in Western Europe and several overseas regions and territories. The metropolitan area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is bordered by Belgium, Luxembourg and Germany to the northeast, Switzerland and Italy to the east, and Andorra and Spain to the south. The overseas territories include French Guiana in South America and several islands in the Atlantic, Pacific and Indian oceans. The country's 18 integral regions span a combined area of 643,801 square kilometres (248,573 sq mi) and a total population of 67.3 million. France, a sovereign state, is a unitary semi-presidential republic with its capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban areas include Lyon, Marseille, Toulouse, Bordeaux, Lille and Nice.
Land reclamation in the Netherlands has had a long history. As early as in the 14th century the first reclaimed land had been settled.
One of the earliest large scale projects was the Beemster Polder in the Netherlands, realized in 1612 adding 70 square kilometres (27 sq mi) of land. In Hong Kong the Praya Reclamation Scheme added 20 to 24 hectares (50 to 60 acres) of land in 1890 during the second phase of construction. It was one of the most ambitious projects ever taken during the Colonial Hong Kong era. Some 20% of land in the Tokyo Bay area has been reclaimed, most notably Odaiba artificial island. Le Portier, Monaco and Gibraltar are also expanding due to land reclamation. The city of Rio de Janeiro was largely built on reclaimed land, as was Wellington, New Zealand.
Artificial islands are an example of land reclamation. Creating an artificial island is an expensive and risky undertaking. It is often considered in places with high population density and a scarcity of flat land. Kansai International Airport (in Osaka) and Hong Kong International Airport are examples where this process was deemed necessary. The Palm Islands, The World and hotel Burj al-Arab off Dubai in the United Arab Emirates are other examples of artificial islands (although there is yet no real "scarcity of land" in Dubai), as well as the Flevopolder in the Netherlands which is the largest artificial island in the world.
Agriculture was a drive for land reclamation before industrialisation.In South China, farmers reclaimed paddy fields by enclosing an area with a stone wall on the sea shore near a river mouth or river delta. The species of rice that grow on these grounds are more salt tolerant. Another use of such enclosed land is the creation of fish ponds. It is commonly seen on the Pearl River Delta and Hong Kong. These reclaimed areas also attract species of migrating birds.
A related practice is the draining of swampy or seasonally submerged wetlands to convert them to farmland. While this does not create new land exactly, it allows commercially productive use of land that would otherwise be restricted to wildlife habitat. It is also an important method of mosquito control.
Even in the post-industrial age, there have been land reclamation projects intended for increasing available agricultural land. For example, the village of Ogata in Akita, Japan, was established on land reclaimed from Lake Hachirōgata (Japan's second largest lake at the time) starting in 1957. By 1977, the amount of land reclaimed totalled 172.03 square kilometres (66.42 sq mi).
Beach rebuilding is the process of repairing beaches using materials such as sand or mud from inland. This can be used to build up beaches suffering from beach starvation or erosion from longshore drift. It stops the movement of the original beach material through longshore drift and retains a natural look to the beach. Although it is not a long-lasting solution, it is cheap compared to other types of coastal defences. An example of this is the city of Mumbai.
As human overcrowding of developed areas intensified during the 20th century, it has become important to develop land re-use strategies for completed landfills. Some of the most common usages are for parks, golf courses and other sports fields. Increasingly, however, office buildings and industrial uses are made on a completed landfill. In these latter uses, methane capture is customarily carried out to minimize explosive hazard within the building.
An example of a Class A office building constructed over a landfill is the Dakin Building at Sierra Point, Brisbane, California. The underlying fill was deposited from 1965 to 1985, mostly consisting of construction debris from San Francisco and some municipal wastes. Aerial photographs prior to 1965 show this area to be tidelands of the San Francisco Bay. A clay cap was constructed over the debris prior to building approval.
A notable example is Sydney Olympic Park, the primary venue for the 2000 Summer Olympic Games, which was built atop an industrial wasteland that included landfills.
Another strategy for landfill is the incineration of landfill trash at high temperature via the plasma-arc gasification process, which is currently used at two facilities in Japan, and will be used at a planned facility in St. Lucie County, Florida.
Draining wetlands for ploughing, for example, is a form of habitat destruction. In some parts of the world, new reclamation projects are restricted or no longer allowed, due to environmental protection laws. Reclamation projects have strong negative impacts on coastal populations, although some species can take advantage of the newly created area.
The State of California created a state commission, the San Francisco Bay Conservation and Development Commission, in 1965 to protect San Francisco Bay and regulate development near its shores. The commission was created in response to growing concern over the shrinking size of the bay.
Hong Kong legislators passed the Protection of the Harbour Ordinance, proposed by the Society for Protection of the Harbour, in 1997 in an effort to safeguard the increasingly threatened Victoria Harbour against encroaching land development.Several large reclamation schemes at Green Island, West Kowloon, and Kowloon Bay were subsequently shelved, and others reduced in size.
Reclaimed land is highly susceptible to soil liquefaction during earthquakes,which can amplify the amount of damage that occurs to buildings and infrastructure. Subsidence is another issue, both from soil compaction on filled land, and also when wetlands are enclosed by levees and drained to create Polders. Drained marshes will eventually sink below the surrounding water level, increasing the danger from flooding.
|Country||Reclaimed land (km2)||Note|
|13,500+||Land reclamation in China|
|7,000|| Flevoland, de Beemster, Afsluitdijk |
Land reclamation in the Netherlands
|1,000+||Artificial islands of the United States|
|470||Land reclamation in the UAE|
|135||Land reclamation in Singapore|
|3.3||Reclamation of Wellington Harbour|
|2.33 km2 (0.90 sq mi)||Colombo International Financial City|
|0.41||Land reclamation in Monaco|
disputes persist with Malaysia over […] extensive land reclamation works
Hong Kong, a Special Administrative Region of the People's Republic of China, can be geographically divided into three territories: Kowloon, Hong Kong Island, and the New Territories. Hong Kong is a coastal city and major port in Southern China, bordering Guangdong province through city of Shenzhen to the north and the South China Sea to the West, East and South. Hong Kong and its 260 territorial islands and peninsulas are located at the mouth of the Pearl River Delta. The area of Hong Kong is distinct from Mainland China, but is considered part of "Greater China".
Macau is a Special Administrative Region on the southern coast of China. It is located at the south of Guangdong Province, on the tip of the peninsula formed by the Zhujiang estuary on the east and the Xijiang on the west. Macau is situated 60 km (37 mi) west of Hong Kong, and 145 km (90 mi) southwest of Guangzhou, the capital of Guangdong Province. It is situated immediately east and south of Zhuhai.
Hong Kong Island is an island in the southern part of Hong Kong. It has a population of 1,289,500 and its population density is 16,390/km², as of 2008. The island had a population of about 3,000 inhabitants scattered in a dozen fishing villages when it was occupied by the United Kingdom in the First Opium War. In 1842, the island was formally ceded in perpetuity to the UK under the Treaty of Nanking and the City of Victoria was then established on the island by the British Force in honour of Queen Victoria.
Lantau Island is the largest island in Hong Kong, located at the mouth of the Pearl River. Administratively, most of Lantau Island is part of the Islands District of Hong Kong. A small northeastern portion of the island is located in the Tsuen Wan District.
Causeway Bay is a heavily built-up area of Hong Kong, located on Hong Kong Island, and covering parts of Wan Chai District. The Cantonese name is also romanised as Tung Lo Wan as in Tung Lo Wan Road (銅鑼灣道). The rent in the shopping areas of Causeway Bay was ranked as the world's most expensive for the second year in a row, after overtaking New York City's Fifth Avenue in 2012.
Hong Kong International Airport is the commercial airport serving Hong Kong, built on reclaimed land on the island of Chek Lap Kok. The airport is also known as Chek Lap Kok Airport (赤鱲角機場).
Tokyo Bay is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. Its old name was Edo Bay. The Tokyo Bay region is both the most populous and largest industrialized area in Japan.
An artificial island or man-made island is an island that has been constructed by people rather than formed by natural means. Artificial islands may vary in size from small islets reclaimed solely to support a single pillar of a building or structure, to those that support entire communities and cities. Early artificial islands included floating structures in still waters, or wooden or megalithic structures erected in shallow waters.
Kowloon Bay is a bay and a town in Hong Kong.
Chek Lap Kok is an island in the western waters of Hong Kong. Unlike the smaller Lam Chau, it was only partially leveled when it was assimilated via land reclamation into the 12.48 square kilometres (4.82 sq mi) island for the current Hong Kong International Airport, which opened for commercial aviation in 1998. The airport is popularly referred to as Chek Lap Kok Airport to distinguish it from the former Hong Kong International Airport.
East Point was a cape on the northern shore of Hong Kong Island, Hong Kong. It was a pointed headland that extended from Jardine's Hill, i.e. Lee Garden towards Kellett Island. It marked the eastern limits of the early City of Victoria. The piece of land separated Causeway Bay in the east and the bay outside Happy Valley. Streams and muds from Tai Hang and Wong Nai Chung shaped the headland.
Hongkong Land (HKL) is a property investment, management and development groups with premium commercial and residential property interests across Asia. It owns and manages almost 800,000 sq. m. of prime office and luxury retail property in key Asian cities, principally in Hong Kong and Singapore. Its Hong Kong Central portfolio represents some 450,000 sq. m. of prime property. In Singapore it has a further 165,000 sq. m. of prestigious office space mainly held through joint ventures, while MCL Land, its subsidiary, is a well-established residential developer. Hongkong Land also has a 50% interest in a leading office complex in Central Jakarta, and a number of residential and mixed-use projects under development in cities across Greater China and Southeast Asia, including a luxury retail centre at Wangfujing in Beijing.
Gin Drinkers Bay or Gin Drinker's Bay, also known as Lap Sap Wan, was a bay in Kwai Chung, Hong Kong.
Cotai is a 5.2 square kilometers (2.0 sq mi) piece of newly reclaimed land on top of Seac Pai Bay between Taipa and Coloane islands in Macau, that has made two independent islands become one island, since 2005. The word can also refer to the entire new island which was formed by the reclamation. In the second sense, the "Special Administrative Region" of Macau now consists of the Macau Peninsula plus Cotai Island, about a mile to the south.
Tseung Kwan O is a bay in Sai Kung District, New Territories, Hong Kong. In the northern tip of the bay lies the Tseung Kwan O Village.
Central and Wan Chai Reclamation is a project launched by the government of Hong Kong since the 1990s to reclaim land for different purposes. This includes transportation improvements such as the Hong Kong MTR Station, Airport Express Railway & Central-Wanchai Bypass, as well as public recreation space such as the Central Harbourfront Event Space, Tamar Park and the Hong Kong Observation Wheel.
China is rather active in land reclamation. Since 1949 a large amount of artificial land has been reclaimed, mainly on its coastlines. China is among the countries which have built the most artificial land; from 1949 to 1990s, the total area of land reclaimed from the sea of China was about 13,000 km2.
The reclamation of land from the ocean has long been used in mountainous Hong Kong to expand the limited supply of usable land with a total of around 60 square kilometres of land created by 1996. The first reclamations can be traced back to the early Western Han Dynasty, when beaches were turned into fields for salt production. Major land reclamation projects have been conducted since the mid-19th century.
Land reclamation is done in Monaco because land is very scarce, as the country is comparatively tiny, at 0.78 mi². To solve this problem and continue economic development, for years the country has been adding to its total land area by reclaiming land from the sea.
The reclamation of land from surrounding waters is used in Singapore to expand the city-state's limited area of usable, natural land. Land reclamation is most simply done by adding material such as rocks, soil and cement to an area of water; alternatively submerged wetlands or similar biomes can be drained.
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