urban green belts urban green belts - a way to sustainable ...€¦ · project management prof. dr....
TRANSCRIPT
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Seite 1
Urban Green Belts
Urban Green Belts - a way to sustainable urbanisation ?
Prof. Dr. Eckart Güldenberg
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Seite 2
Urban Green Belts
Urban green belts – a way towards sustainable urbanisation ?
Prof. Dr. Eckart Güldenberg
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Seite 3
Urban green belts
1. Idea and history of green belts
2. Different schemes of green belts
3. How to handle a green belt system?
4. Conclusions and suggestions
Prof. Dr. Eckart Güldenberg
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1. Idea and history of green belts
Prof. Dr. Eckart Güldenberg
Hippodamos
510 B.C. – 450 B.C.
Ebenezer Howard
1850 - 1928
Patrick Abercrombie
1879 - 1957
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Hellenistic Ideal City
Urban Planning Principles - Par example Milet by Hippodamos 480 B.C.-
1. Functional segregation - but on a
small scale
2. Orthogonal rastered ground plan
3. Centralised and emphasised
public and commercial facilities
4. Spatial and numeral limit
Prof. Dr. Eckart Güldenberg
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Hellenistic Ideal City
Homogenous „low rise
high density“ housing
Prof. Dr. Eckart Güldenberg 6
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Ebenzer Howard: the Idea of Garden Cities (1898)
What are the essentials?
1. Urban Planning Principles
• a normativ model of settlements
• spatial and numeral limits of
his garden cities system
• green belts to limit and to
structure urbanised spaces
• functional segregation of uses
• centralised public + private
facilities
•individual housing „low rise high
density“
2. Social Reforms
3. Project Management
Prof. Dr. Eckart Güldenberg
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Prof. Dr. Eckart Güldenberg
Abercrombie´s Greater London Plan
1944
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London´s Green Belt development (1947 - 1984)
Prof. Dr. Eckart Güldenberg
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Definition of green belt
A green belt is a spatial planning instrument,
1. to limit the sprawl of human settlements
2. to structure the settlements on a regional scale
3. to protect spoil and natural ressources
4. to enable agricultural and forestal production
5. to enable recreation nearby human settlements
Prof. Dr. Eckart Güldenberg
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2. Different schemes of green belts
Prof. Dr. Eckart Güldenberg
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Regional Open Space Concept of the Ruhr District Cities
Example for a vertical and horizontal grid
Prof. Dr. Eckart Güldenberg
Example for a vrtical and horizontal grid
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Regional Open Space System Hannover Region
Example for a ring = green belt
Prof. Dr. Eckart Güldenberg
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Green net concept City of Hamburg
Example for 2 rings and axes
Prof. Dr. Eckart Güldenberg
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3. How to handle a green belt system?
Prof. Dr. Eckart Güldenberg
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German Territoral Units and Planning Levels
Region
Federal
Land
Municipality
BRD
Land
development
program
Regional spatial progam
Preparatory land-use plan
Binding land-use plan Part of a municipality
Prof. Dr. Eckart Güldenberg
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Administrativ structure of the Hannover Region
Prof. Dr. Eckart Güldenberg
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Prof. Dr. Eckart Güldenberg
Integrated spatial concept of the Hannover-Region
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Open space protection and development
Graphic and textual presentation RROP
Priority area for open space functions
in and between densely urbanised and
havily burdened areas of planning
spaces
In these areas all significant spatial plannings and
measures must be compatible with the priority
purpose. In these areas only such
publicinstallations or facilities shall be planned
which are necessary for the region and can not be
realized nearby the settlements and for those
within the settlements no suitable areas are
available.
The open spaces of the regional important open
space system shall neither by edifical facilities in
the sense of settlement nor by other land uses be
affected in their ecolocical and social functions.
Prof. Dr. Eckart Güldenberg
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Open Space
Functions
Prof. Dr. Eckart Güldenberg
Open Space
Functional Areas
Ecolocical
Functions
Economical
Functions
Social
Functions
Nature +
Landscape
Species + biotop
protection
Efficiency of the
ecosystem
Recreation
Agriculture Plants + animals
Biotop networking
Soil protection
Climate
Food production
Raw material prod.
jobs
Protection of rural
areas + cultural
landscape
Forestry Soil protection
Biotop protection
Biotop networking
Climate
Wood production
jobs
Recreation
Recreation Traffic reduction
(short ways)
Positive regional
locational factor
jobs
Experiencing
Nature
Communication
Protection of
Raw materials
Potential of
subsequent use
Extraction of raw
materials
Existential benefit
Protection of
Drinking water
Water filter
Renewal of
groundwater
Extraction of water Existential benefit
Climate Exchange of air
Balance of
temperature
Oxygen supply
Positive regional
locational factor
Reduction of health
costs
Existential benefit
health
Settlement
structure
Ecological
networking
Better emission
balance
Traffic reduction
Optimal use of
infrastructure
Identification
Social surrounding
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Prof. Eckart Güldenberg
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Conflict of interests: settlement versus green belt ?
Regional Plan 1996 Regional Plan 2005
Prof. Dr. Eckart Güldenberg
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New settlement and open space concept
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Activities to protect and to develop Green Belts
1. Improvement of agricultural structures + ecological land use
2. Enhancement of forest areas
3. Conservation, preservation + development of nature
4. Improvement of recreation, sport + tourism areas
5. Acquisition of real estate
6. Appropriation by the citizens
Prof. Dr. Eckart Güldenberg
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Regional Open Space Concept City of Hamburg
Activities to develop open spaces
Prof. Dr. Eckart Güldenberg
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Key projects
Prof. Dr. Eckart Güldenberg
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Prof. Dr. Eckart Güldenberg
Real estate acquisition to protect open space areas
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People taking possession of their green belt
Prof. Dr. Eckart Güldenberg
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Conclusions and suggestions
1. Administrativ and legislativ conditions for a
regional planning system
2. Integrated spatial regional concept for the
settlement and open space structure
3. Open space concept with a green belt and a
network of public green within the city
4. Special planning objective with priority for open
space areas
5. Informell activities to defend the open space
areas
Prof. Dr. Eckart Güldenberg
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Thank you very much for your attention
Prof. Dr. Eckart Güldenberg
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Conclusions and suggestions for HCMCity ?
Prof. Dr. Eckart Güldenberg
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Comparison of legends
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Geplantes Baugebiet
Hannover „In der Rehre“ (Ausschnitt aus RROP 1996)
Prof. Dr. Eckart Güldenberg
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c
Erläuterungskarte 3
Prof. Dr. Eckart Güldenberg 34
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Raum-, Siedlungs- und Freiraumstruktur RROP Hannover 2005
Prof. Dr. Eckart Güldenberg
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Freiraumfunktionen
Prof. Dr. Eckart Güldenberg
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Prof. Dr. Eckart Güldenberg
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Comparison of legends
Prof. Dr. Eckart Güldenberg
HCMCity Masterplan 2025
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Conflict of interests: settlement versus green belt ?
Prof. Dr. Eckart Güldenberg
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Prof. Dr. Eckart Güldenberg
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