The most recent Climate Scenario’s by the Royal Netherlands Meteorological Institute (KNMI) estimate that the Dutch climate will have changed considerably by 2035. By adhering to the most pessimistic scenario, average temperatures are expected to rise. This is disastrous for several current forms of agriculture. However, for Dutch viticulture, this might be a positive change. In this short article, Savills explores the future viability of Dutch viticulture. What are the Dutch “Terroirs of the Future”? Will the region of Zwolle turn into the French Bourgogne by 2035? Or can we start comparing the hills of Limburg to the Rhône Valley? As the agricultural system is largely interwoven in the fabric of the Dutch economy and its real estate, it is of interest to explore how viticulture can develop itself. After all, if a boom of viticulture is expected, auxiliary (industrial) real estate is needed to facilitate the growth in production of wine.
Unbottling the Dutch Potential
There are many factors that influence how well grapes can grow on Dutch soil. The acidity of the soil, the slope of the terrain, the hours of sunshine, and precipitation are all factors that influence the development of grapes and, thus, the taste of the Dutch-grown wine of the future. By combining and analysing the most pessimistic KNMI’s data on temperatures in 2035, soil types of the Netherlands, and the level of groundwater by using Geographic Information Systems (GIS), Savills has been able to pinpoint the Dutch Terroirs of The Future.
By calculating the Huglin Index, which is a commonly used warmth index to assess the suitability of grape varieties on vineyards, we see that the Netherlands will largely be suited for the cultivation of wine in 2035. The Wadden Islands, the area around Den Helder and some parts of Frisia are, according to the KNMI scenario, unsuitable for vine production. Adding to this, vines need soils, in most cases, that are fairly permeable in terms of water drainage. Clay and peat soils, are, therefore, mostly unsuitable for the production of vines. By using the Basisregistratie Ondergrond (BRO), which classifies all soil types in the Netherlands, it is possible to exclude these areas in GIS. Finally, as vines do not handle high levels of ground water well, all areas that have a ground water level higher than 85 centimetres are excluded. Various sources agree that most vines perform optimally at a ground water level between 85 centimetres and 250 centimetres.
The majority of the Netherlands is suitable for the production of vines. Overall, 283,417 agricultural parcels are suitable with a combined area of 1,257,850 hectares for the production of vines. These plots of land are mostly located in the Provinces of Zeeland, Brabant, Gelderland, Overijssel, Drenthe, Groningen and Limburg. The vines that can grow grapes that need the most heat can be found in the Southern part of the country. For example, Cabernet Franc can be grown in the Southern part of the Netherlands in 2035. This grape is not yet found in the Netherlands, and currently predominantly found in the Loire Valley in France, Northern Italy, and Catalonia (Spain).