The soil is still under threat from urban sprawl. Small municipalities with little planning capacity and more easily accessible conurbations in particular are doing little to counter the issue. Researchers from the National Research Programme "Sustainable Use of Soil as a Resource" (NRP 68) have analysed the reasons for this by surveying Swiss municipalities.
Since the 1950s, urban sprawl in Switzerland has been progressing virtually unchecked. The trend towards greater levels of soil consumption is expected to continue until the middle of this century, albeit at a slower pace.
A group of researchers led by Felix Kienast from the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) has investigated this issue as part of the National Research Programme "Sustainable use of soil as a resource" (NRP 68). The aim was to investigate the causes behind urban sprawl.
Transport links favour urban sprawl
A statistical analysis of various available data sets for soil consumption and socio-economic development showed that urban sprawl and its impact on soil consumption cannot be adequately explained by population growth alone. Other developments have had a much more significant influence, such as the increase in single-occupant households.
In particular, a municipality's transport links favour urban sprawl. Multi-decade comparisons have shown that once a certain degree of urbanisation has been reached, the effect of good accessibility is reversed and it encourages consolidation. So at present, it is the relatively easily accessible, but not yet highly urbanised conurbations that are most affected by urban sprawl.
Almost 70% of Swiss municipalities completed a survey* on their spatial planning activities. As a result, the research team was able to analyse the applied planning instruments by canton, municipality size and type of municipality. This highlighted a strong connection to the size of the municipality.
Support in a planning association
In many small municipalities, Town Chancellors bear the administrative burden of planning activities. Larger municipalities often have an administrative department (for example, the building authority), which also handles planning activities, or they may even have a separate spatial planning department. Such municipalities are much better equipped to employ newer and more sophisticated planning instruments, such as special land use plans with urban planning requirements.
Since they are under significant settlement pressure, urban centres and conurbations enforce stricter planning measures than small and peripheral municipalities, for example, limiting low-density areas (estates with detached houses) or coordinating zoning with public transport provision. The more active of the small communities tend to focus on measures to prevent land grabbing or they apply very low usage figures that are intended to promote a compact residential area and consolidated conurbation development.
The analyses also illustrate that the municipalities should not be considered in isolation. Spatial planning measures and the development of a municipality always have a significant impact on surrounding municipalities. Researchers’ recommendations: Implementing instruments to combat urban sprawl to maximum effect requires a high level of regional coordination. Small municipalities with little planning capacity need professional support, for example, in the form of a planning association.
(*) Kaiser N. et al.: Raumplanung in den Schweizer Gemeinden: Ergebnisse einer Umfrage, WSL Berichte, Volume 42, 2016, ISSN 2296-3456 (download) http://www.wsl.ch/dienstleistungen/publikationen/pdf/15446.pdf
"Sustainable Use of Soil as a Resource" (NRP 68)
The Swiss National Science Foundation has been mandated by the Federal Council to conduct the National Research Programme "Sustainable Use of Soil as a Resource" (NRP 68). The aim is to compile knowledge about soil systems as well as evaluation instruments and strategies for dealing with soil for political decision-making purposes. The overall final recommendations of NRP 68 will be published in different syntheses reports starting from 2018.
Prof Felix Kienast
Swiss Federal Institute for Forest, Snow and Landscape Research (WSL)
Phone: +41 (0)44 739 23 66
http://www.snf.ch/en/researchinFocus/newsroom/Pages/news-160614-press-release-th... Press release "The causes of soil consumption"
http://www.nfp68.ch/de NRP 68 "Sustainable Use of Soil as a Resource"
http://p3.snf.ch/Project-142996 Project in the SNSF P3 research database
http://www.nfp68.ch/en/projects/key-aspect-4-geoinformation-and-governance/proje... NRP 68 urban sprawl project
https://twitter.com/snsf_ch SNSF on Twitter
Media Abteilung Kommunikation | idw - Informationsdienst Wissenschaft
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Materials Sciences
21.02.2018 | Health and Medicine
21.02.2018 | Physics and Astronomy