Land Reclamation - Tokyo Bay Case Study

  • What is land reclamation
  • Processes of land reclamation
  • Tokyo Bay Case study of land reclamation
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AS Geography 16th May 2010
Coasts Revision
LAND RECLAMATION
One way of relieving the pressure on coastal space is to create land by
draining wetlands and reclaiming land from inshore waters and coastal
lagoons
Such artificial land can be created relatively cheaply but not without
environmental costs (See Tokyo Bay Case study)
Land reclamation is any process by which land can be substantially improved
or made available for some use/human activity
PROCESSES OF LAND RECLAMATION
Treatment of derelict land
Drainage of land temporarily waterlogged by seasonal flooding
Drainage of lakes or shallow parts of the sea floor
LAND RECLAMATION AROUND TOKYO BAY
Around 75% of the Japan's Since the mid 1970s, the scale
land surface is mountainous of land reclamation has
and unsuitable for settlement. declined. The reasons include:
1) A slowdown in the rate of
Usable land is fragmented,
economic growth
occurring in small detached
coastal lowlands. 2) Pollution of water caused by
the landfill used in some of the
Until the 20th Century, reclamation work
wetland reclamation was
undertaken mainly to provide 3) The discovery that during
land for Agriculture. strong earthquakes, reclaimed
land loses its load-bearing
capacity
During the 20th Century, the
prime motivators were 4) The vulnerability of low-
urbanisation and industrial lying ground to tsunamis in an
development. era of rising sea levels
Between 1950 and the oil 5) Environmental concern that
crisis of 1973, an estimated the lost mudflat habitat and its
The land was used for new port
110,000 hectares of new land wildlife should be stored.
installations, heavy industrial development
were created around Tokyo such as oil refineries, stealworks, housing, 6) Making the waterfront a
Bay. commercial services, airport expansion (e.g. place of leisure and recreation
Haneda airport) and physical infrastructure rather than development.
It now accommodates over 25 in the form of sewage treatment works and
million people. electricity generating stations.
Chris Cartwright

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