European Cooperation in the field of Scientific and Technical Research -

COST Action C11

Glossary - Definitions of Greenstructure and Urban Planning terms

Some first definitions for the words listed in the table below; this is meant to make you react and make improvements - let's start a debate!!

To add your own definitions or ideas just email me and I shall add them to these pages.

 

The Glossary will be in English, with translations into the languages listed below. It will gradually be assembled on these pages - use the message board or email me with any words/phrases you want included. Then everybody should try to give their own definition and translation, where possible.

Words in red = see below for first ideas about definitions

  Greenstructure and Greenspace in Urban Planning - Definitions suggested by Anne Beer

Definitions and related Case Studies

Greenspace

Patterns of Greenspace

The composition of Urban Greenspace

Greenstructure

Greenstucture Planning

Munich's Greenspace study - summary, facts and figures

Sheffield's Greenspaces - facts and figures

NB THIS IS A FIRST DRAFT OF DEFINITIONS ONLY - to get you thinking and making suggestions of your own. To send your definitions/comments and ideas, click the blue email links in each section below.

Greenspace

Anne Beer - UK

Greenspace - Greenspaces are "places" within and around the city - these "places" carry human activity as well as plants, wildlife and water and their presence influences quality of life, as well as the quality of air and water.

  • Through the flora and fauna they support, Greenspaces are crucial to the survival of any level of biodiversity across a city.
  • Greenspaces have a measurable impact on local as well as city-wide air quality and can ameliorate the temperature within a city.
  • By providing "natural" places through which water runs and within which it can be stored, Greenspaces can have an impact on water quality and on surface flows and, therefore, on the reduction of local flood hazard.
  • Greenspaces provide settings for a wide range of human activity and, therefore, influence people's perception of their quality of life.
  • In addition, Greenspaces have a profound influence on how local people and visitors experience a city.

It can be argued that Greenspaces are essential to the maintenance and enhancement of the quality of life in all urban areas.

See below for a diagram indicating the composition of urban Greenspace within a city.

Ann Caroll Werquin -FR

The term is not common in France, to me it is similar to "green system", which is a term I frequently use

Greenspaces do exist by themselves, greenstructure is part of the image of the city or of places within or around the city. It is the alive body of it dealing with vegetal life and natural moves (light, sky, birds, squarrels ...) , such as inhabitants are the society part of it, …

Stephan Pauleit -D

Urban Greenstructure encompasses all urban open spaces, from designated public to private open spaces (residential, commercial, industrial and services), incl. accessory urban open spaces, e.g. along roads and railway lines. A comprehensive definition of urban greenstructure is important as open spaces which are non vegetated (not green) may also have important functions for recreation, environmental improvement, wildlife and urban character. For instance, railway lines may serve as corridors for fresh air and wildlife.

To add your own definitions or ideas just email Anne Beer.


Patterns of Greenspace - for a mixture of natural environmental (mainly topographical) and historic reasons, cities can have differing patterns of Greenspace.

  • Linear Greenspaces - in some cities many of the major Greenspaces form long, linked spaces. These have occurred
    - organically, for instance, where a river valley was too steep-sided to allow buildings to be located on its edges, so that the unbuilt spaces gradually became parkland (as can be seen in Sheffield)
    - in a planned fashion, where a town planner decided that a long parkway added to the attractiveness and usefulness of his urban design ( as seen in Boston, Mass.)
    - for reasons of historic accident , where linked Greenspaces have been formed in place of the old city walls (as in Frankfurt am Main).
    Road, canal and rail corridors also form linear Greenspaces through a city and often support a wide range of plant and animal species.
  • Islands of Greenspace - in other cities Greenspaces are seen as "islands", occurring where parks or other open spaces were planned as a city grew, or where spaces were left over after planning and labelled "incidental spaces" on the plan (often of no use or interest to anyone), or where buildings have been cleared temporarily or permanently and nature has tried to reassert itself. These islands of Greenspace can vary from a few square metres in size to major segments of a city.
  • No or few Greenspaces - many small cities and historic cities have few Greenspaces in their core areas. In earlier times, when cities were small and laid out for pedestrians to use, people could often walk out into the surrounding fields and woods within twenty minutes, so there was little need for Greenspaces. In such cities hard surfaced squares and streets form the outdoor areas; in some cases these are supplemented by small Greenspaces in the form of "islands" of well vegetated gardens, often hidden from public view as they are totally surrounded by buildings (as in Leuven, Belgium).
  • Girdles of Greenspace - these comprise areas of Greenspace designed and managed for recreational or other land uses as required by the individual city, or they can be composed of a mix of agricultural land, woodland (sometimes as in Örebro in Sweden, used for growing biomass for the city), or water storage areas. In some instances such areas are designated as Green Belts by the planners.
  • The domestic garden as Greenspace - domestic gardens have been neglected as an element in the city - in many cities they form a very major component of the Greenspace, often occuring across the whole city.
  • Mixed patterns - in most cities there is a mixture of the above patterns of open space - the result of historic changes in attitude and planning ideas, as well as of funding regimes.

To add your own definitions or ideas just email Anne Beer


Definitions

Greenspace
Patterns of Greenspace
The composition of Urban Greenspace
Greenstructure

Greenstucture Planning

Sheffield's Greenspaces facts and figure

© A.R.Beer and COSTC11 research group, 2000

To add your own definitions or ideas just email Anne Beer


The functions of urban open spaces

Stephan Pauleit-D

The criteria for the assessment of the performance of urban open spaces may be sorted into these broad categories. Economy could be added as a further dimension.

Urban site requirements means the different conditions for urban green spaces in European cities and towns, e.g. climatic regimes, socio-cultural background, history, economic frame conditions.

 

 

Assessment of the performance of urban open spaces

Definitions

Greenspace
Patterns of Greenspace
The composition of Urban Greenspace
Greenstructure

Greenstucture Planning

Sheffield's Greenspaces facts and figure

Greenstructure

Anne Beer - UK

This word is not used in the UK planning systems. However, in urban planning literature Greenstructure has been used to allow the development of concepts relating to the role of a city's Greenspaces in the planning, designing and management of urban areas. There is a noticeable lack of planning theory in relation to the overall role of Greenspace in cities; instead only specific Greenspaces with specific attributes have been considered by the planning process in the UK (i.e. public parks, historic urban gardens and recreational open spaces). In the planning literature (at least in English) there is a lack of discussion about how a proper consideration and understanding of the function of Greenspaces might influence the future spatial planning of urban areas.

I take Greenstructure to be concerned with the organisational aspects of a city's Greenspaces - how such spaces are best planned, designed and managed in relation to the other land uses of a city.

Ann Caroll Werquin -FR

Greenstructure is for me a different concept than greenspaces, containing the idea of an interaction between built part of an urban context and at the same time signs of Nature.

Studying greenstructure includes a consideration of a city's greenspaces and other urban spaces (public or private) with concentrations of vegatation but also pays attention to how natural elements are valued in the place under consideration(it therefore deals with social, ecological and economic issues…)

Is Greenstructure only colored in green ? Probably not, because it brings together for me porous soils (earth, sand) blue lines (rivers, canals…) and topography… etc. making a whole.

Which urban spaces are parts of Greenstructure ?: this may be a question of interest for our group. Trying once to make a literature list about " greenways ", I found in American author Roxanne Warren Mc Graw book " The Urban oasis, guideways and greenways to the human environment " (1997) lots of cases of pedestrian zones, which while giving a different rhythm to a walk within the city are not "ecologically sound" places. We will need to decide whether we include these non ecologically sound spaces as part of green structure?

Greenstructure is for me more linked with ecology taking a leading part, limitting pollution and water problems (Boston as said Anne…) being protected from noise…

To add your own definitions or ideas just email Anne Beer


Greenstructure Planning

Anne Beer - UK

The concept of Greenstructure Planning has been adopted in some northern European countries (notably Norway and the Netherlands) as a means of linking consideration of the quality of life in the present day city to the presence or absence of Greenspaces and the special and varying qualities of such spaces. Greenstructure Planning is a mechanism which deals with how a city's Greenspaces might be planned in a spatial sense, and then how they might best be designed, managed and maintained for the benefit of the local population. These benefits include the use of Greenspaces as follows:

  • as support for the development and maintenance of biodiversity in urban areas
  • as places to support the local management of water quality and flows
  • as places which contribute towards cleaning the particulates out of the air and which help to reduce the urban "heat island" effect
  • as places to support the recreational and experiential requirements of local people and visitors to a city
  • as places which increase the economic attractiveness of a city (for instance through influencing the decision- making processes of entrepreneurs seeking new locations for businesses, or tourist deciding where to visit).

A properly functioning urban Greenstructure is as important to the quality of life of urban dwellers as a city's Infrastructure* and needs to be recognised as such by the planning system.

 

*Physical Infrastructure is taken to mean the network of buildings and the associated communication, utility and material supplies needed for these to function as supports for a city's economic and social infrastructure.

Ann Caroll Werquin -FR

In my opinion - there is much need to investigate the concept of "Planning greenstructure" now.

Because the new urban settlements in France and elsewhere have strarted changing from the patterns in the two last decades - the idea of the " urban" city has come into fashion and at the expense of the "villagey" or "lanscaped" city (which was using lots of hedgerows…). Green surplus is disappearing fast.

There is a need to work out how ecological purpose can be supported with patterns of green structure styrong enough to withstand the growth of concentrate planned urban areas .

We need examples of where greenstructure has been successfully introduced so bettering recent urban development projects and also of projects where the greenstructure fits with the aims of urban design solutions which aim to save land. This seems to me a realm of research in which gathering materials would be very useful.

Stephan Pauleit - D

What are the main challenges for urban greenstructure?

A distinction may be made between challenges for urban greenstructure by urban development in the city and the city region which have a characteristic configuration of built spaces and greenstructure and a specific set of strength/ opportunities and weaknesses/ threats. These were identified in the Munich Case Study - see diagram

• Inner city: historic cores and closed multistorey blocks from the 19th and early 20th century

Challenges: overall low cover/ deficits of public open spaces; deficit and low quality of private open spaces, e.g. in backyards; threats to heritage of historical gardens and parks: need to preserve, regenerate and manage.

• Transition zone: mix of different land uses/ settlement types. The transition zone is often the result of quick and uncoordinated growth since the 1950. Moderate dynamics.

Challenges: managing infill development on private open spaces (housing, commercial areas), restoration of derelict land; improving access to open spaces; upgrading of open spaces on the grounds of public housing, shopping centres and in industrial areas, conservation of overall high biodiversity.

• Urban fringe: predominantly agriculture/ forestry

Challenges: improving access to the land (agriculture, institutional land) and pathways from the city; accommodating urban development and new land uses (e.g. housing, retail centres and business parks; recreation facilities); upgrading of farmland (biodiversity, landscape character)

• City region: Urban pressure zone:

Challenges: developing a greenstructure which (re-)creates landscape identity from the chaotic mix of remnants from natural, cultural, modern farming, urban and post-industrial landscapes; which accommodates the different land users, and which is a backbone for future development. Otherwise all the challenges listed for the urban fringe.

To add your own definitions or ideas just email Anne Beer

 

 

© A.R.Beer and COSTC11 research group, 2000

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