Wednesday , June 16 2021

Dissemination: So the soil spreads to Switzerland

So the soil is spread in Switzerland – 5 charts for the Growth Initiative

What is it used for in Switzerland? How big are the construction zones? And what had to be done to make room for new buildings and streets? With our charts you know, before 10 February, the Zersiedelungs initiative is voted on.

This divides the area of ​​Switzerland

Switzerland is 41,284 km2 big. The use of this area is regularly checked by the Federal Statistical Office. The latest data, which is available in full, comes from 2009. Non-productive areas account for a quarter of the surface area of ​​Switzerland. These include water, rocks and stones or glaciers. A limited third of Switzerland is the best surface, thus constituting forest and shrub forests or tree plants. Nearly 36% of the land is used as agricultural land.

The remaining 7.5% – that is, 3079 km² – used as a settlement. There are residential and commercial buildings, schools, factories, streets and rails, but also green areas such as gardens, parks or football fields. Construction zones – including unused ones – are part of the settlement.

Everything about the spatial initiative:

Video: Watson / Angelina Graff

So the settlement zone has changed

Since 1985, the population and the populated area have continuously grown in Switzerland and continue to do so. By 2009, the area per capita has grown to the previous maximum of 407 m² per inhabitant. Since then, according to Watson's estimates, this figure has again fallen to 384 m² per inhabitant.

There are still no new numbers in Switzerland. For the latest zone statistics (survey period 2013 to 2018), not all cantons have yet received data. Therefore, from the missing five cantons (Glarus, St. Gallen, Graubünd, Ticino and Vale), Watson used the data from the last survey (from 2004 to 2009) and population data from 2009.

This land had to give way to a new settlement

Between the first study in 1985 and the last full figure in 2009, the settlement area of ​​2207 km2 at 3079 km2 Yes. This corresponds to an increase of 23.4%. In absolute terms this is 872 km2 – or 1.5 times the area of ​​Lac Léman.

This new settlement area was created mainly, namely almost 90%, of former farmland: one third of natural meadows and farmland and, to a lesser extent, fruit, gardens and vineyards, as well as local pasture and alpine areas.

Here are the construction sites in Switzerland

The central Zersiedelungs initiative is the construction area. The initiators want to freeze their total area at today's level. This means that only new building zones can be created in the future if another zone is zoned.

Note: You need to zoom in on the map, only then the areas of the building will become visible:

According to the construction site statistics for 2017, the total area of ​​the construction zones is 2286 km across the country2This corresponds to 5% of the total area of ​​Switzerland. Construction zones have increased by 1.5% or 34km between 2012 and 20172 Yes. However, this growth is partly due to a change in the methodology of the study. 95% of all Swiss residents live in a building. The area of ​​construction of a resident decreases during this period of 309 m2 at 291 m2,

These cantons have the most unobstructed land for construction

If the growth initiative is adopted, still unconstructed construction areas will be even more important for future spatial planning than before. As construction sites are no longer likely to be built, construction activity will focus on these unused areas. Or will be distributed in zones in exchange for the creation of new construction zones elsewhere.

Unconstructed building areas are determined by map and building data analysis. However, this can not always accurately take into account local features, as well as planning and construction regulations. Consequently, the analysis is calculated using two assumptions and the results are counted as blurring bandwidth.

Blurring when determining the area of ​​the building's unconstructed area (difference between the area of ​​the unconstructed area of ​​the building with assumptions one and two). The Watson schedule / data source is 2017 zoning statistics

The share of unconstructed construction sites in 2017 is between 11 and 17%. This corresponds to an area between 257 km2 and 405 km2The latter corresponds about one and a half times the area of ​​the Schaffhausen Canton. The most unfinished construction areas are in the canton of Vale. They are between 37.3 km2 and 57 km2, This corresponds to a share of up to 22% in the area of ​​the construction area.

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