Agricultural suitability for arable farming
Description
The report was prepared at the request of the Ministry of Agriculture with the aim of examining whether there are any arguments to protect fertile agricultural land.
Fertile agricultural land has been defined in the report as land suitable for agriculture based on physical, chemical and biological properties, involving maximum crop yield at minimum environmental stress and minimal use of excipients.
The maps Agricultural suitability of arable farming and pasture farming have been drawn up by determining the reduced yield (yielding depression) in relation to optimal soil and hydrological conditions where fertilisers and pesticides are sufficiently available, but not irrigation. The yield loss rates for water nuisance and moisture deficiency determined.
Land with yield loss rates of 0-15 % are agriculturally best suited for arable and pasture farming, 15-40 % less suitable for agriculture but in use thanks to the many tools (fertilisers, irrigation etc.). > 40 % restricted for agriculture. As indicated in the definition, the environmental impact is part of soil fertility. In the report, agricultural suitability is combined with environmental impact with phosphorus and copper. Reporting shows that part of the Netherlands cannot be defined ‘fertile’ due to the current environmental pressure and/or quality.
NB. The map covers areas already in agricultural use around 1900 (see 5.1) the agricultural land in the drained polders after 1900. The areas that were already in use as agricultural land in 1900 can be regarded as relatively suitable land and in any case more suitable than those which were at the time natural and were later cultivated. In South Holland after 1900 no more mining took place after enough.
Data for Figure 5.2 from Alterra Report 1693
Yield depression in arable crops due to flooding and moisture shortage.
Expressed as % of potential yield. In the case of both moisture shortages and flooding, growth slows down. For wet soils, the sowing and planting date is often later than in dry soils, and the growth starts later in the spring. In the autumn, there are many harvest losses on wet soils.
Resources
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https://geoservices.zuid-holland.nl/arcgis/services/Bodem/Bodem_ecologie/MapServer/WMSServer?request=GetCapabilities&service=WMS |
Tags
- landbouw
- landbouwontwikkelingsgebieden
- bodemkwaliteit
- landbouwgronden
- akkerbouw