世界发展银行-Case-Study-on-Tokyo-Metropolitan-Region,-Japan_36页_12mb

Summary of Tokyo Development: A Case Study

Core Content

This document provides an in-depth analysis of the spatial development and planning of the Tokyo Metropolitan Area, focusing on the evolution of urban policies and infrastructure since the mid-20th century. It highlights the role of the National Capital Region Development Act (1956) and its subsequent plans in shaping Tokyo's urban landscape and addressing challenges related to population concentration, land use, and transportation.

Main Points

1. Historical Context of Tokyo's Development

• Pre-War Development: Tokyo was established as the capital in the late 19th century and experienced significant growth due to modernization and industrialization.
• Post-WWII Reconstruction: After the war, Tokyo faced severe destruction and a housing crisis. The 1947 Constitution and Local Autonomy Law marked the beginning of a new governance era.
• Economic Miracle: From the 1950s to 1970s, Japan experienced rapid economic growth, leading to increased urbanization and housing demand.

2. Spatial Development and Planning

• The Tokyo Metropolitan Area, including Tokyo and seven surrounding prefectures, was developed as an integrated "capital region."
• The National Capital Region Development Act (1956) was enacted to guide the development of this region, emphasizing the balance between urban and rural areas.
• The National Capital Region Development Plan (NCRDP) was revised multiple times (1958, 1968, 1976, 1986, 1999), each focusing on different aspects of urban development and environmental conservation.

3. Key Development Plans

• 1st NCR Basic Plan (1958): Inspired by the Greater London Plan of 1944, it focused on greenbelt development, industrial decentralization, and population control.
• 2nd and 3rd NCR Basic Plans (1968, 1976): Shifted focus from physical restrictions to planned urban development, emphasizing safety, environmental capacity, housing, and industrial expansion.
• 4th NCR Basic Plan (1986): Introduced the Capital Reform Plan, aiming to reduce over-concentration in Tokyo’s core by developing business core cities and decentralizing workplaces.
• 5th NCR Basic Plan (1999): Continued the focus on deconcentration and regeneration of urban areas, especially the Tokyo Bay waterfront.

4. Challenges and Responses

• Land and Housing: Japan's limited land availability and high population density led to the development of multi-family housing and new towns.
• Urban Railways: A key component of Tokyo's transport system, subway and suburban railway networks were expanded to accommodate growing commuter needs. The Yamanote loop line and subway systems were developed to reduce congestion.
• Urban Sprawl and Greenbelts: The initial greenbelt concept was undermined by population influx and economic growth, leading to its eventual abandonment.
• Transportation Policies: The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) introduced measures such as increasing transport capacity, running longer trains, and constructing overpasses to alleviate congestion.

5. Current Situation

• Japan is now facing demographic decline and aging population, prompting a reevaluation of urban policies.
• Urban regeneration projects have been implemented in central Tokyo and along Tokyo Bay, while outskirts have seen population decline.
• The need to reorganize town areas, manage abandoned land, and strategically renew social capital is increasingly important.

Key Information

• Population Trends:
  • Post-WWII population increased from 3.82 million (1947) to 13 million (2010).
  • Population growth slowed in the 1970s due to decentralization policies, but rebounded in the 1990s.
• Legal Framework:
  • The National Capital Region Development Act (1956) replaced the Capital Construction Act (1950).
  • The Act on the Conservation of Suburban Green Zones (1966) aimed to protect green spaces but was limited in scope.
• Infrastructure Development:
  • The Metropolitan Expressway and monorail were built to support the 1964 Olympics.
  • Subway expansion and railway improvements were crucial for managing urban mobility.
• Urban Planning Strategies:
  • The concept of greenbelts was introduced to control urban expansion but failed due to high population pressure.
  • Suburban development zones and urban development areas were designated to promote decentralization and sustainable growth.

Annexures Summary

• Annexure 1: Focuses on urban railway management, including the expansion of subway lines and railway infrastructure improvements.
• Annexure 2: Discusses the development of new city centers (Shintoshin) and the decentralization of business offices to reduce urban congestion and promote suburban growth.

Conclusion

The development of Tokyo and its surrounding areas has been shaped by a combination of national policies, urban planning initiatives, and infrastructure investments. While early plans aimed to control urban sprawl and promote environmental sustainability, the high population growth and economic expansion led to the abandonment of greenbelt policies and the restructuring of urban development. Today, the challenge is to rebalance urban growth, manage aging populations, and revitalize urban and suburban areas through strategic planning and policy reforms.