Beperken watervraag landbouw door kleinschalige maatregelen

Joost Delsman, Stijn Reinhard, Tine te Winkel, Arnaut van Loon, Erwin van Boekel, Ruud Bartholomeus, Harry Massop, Martin Mulder, Nico Polman, Femke Schasfoort & Ad Jeuken

zoetwaterbeschikbaarheid, landbouw, maatregelen, kosten, baten

Regional scan Freshwater measures.

Reducing agricultural water demand through small scale measures.

freshwater availability, agriculture, costs, benefits

To prepare the Netherlands for the expected increase in droughts and salinisation several innovative techniques have been developed. These are mostly local scale techniques, and must be implemented on a significant scale to make a regional impact. To assess the contribution of
these measures to drought adaptation, it is necessary to analyse whether farmers will invest in these measures and how effective these measures are on the regional scale. This is analysed by a newly developed instrument: Regioscan Zoetwatermaatregelen – The Regional scan
Freshwater measures . This Regional scan enables water management authorities to compute costs and benefits of local freshwater measures and to calculate the aggregate impact on the regional freshwater demand. Impact is additionally assessed on a number of other societal effects
such as nutrient emissions. The Regional Scan Freshwater measures is tested in two regions, representative of both the polder and the undulating sandy regions of the Netherlands. The freshwater measures are especially attractive for farmers who grow high value crops in the low lying part of the Netherlands vulnerable for salinisation. For other farmers the measure become profitable if the current irrigation is prohibited.

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