Bevloeiing ten behoeve van herstel watersysteem 't Klooster : verkenning bevloeiing als gebiedsgerichte aanpak voor klimaatadaptatie

A field experiment was carried out in the water extraction area 't Klooster, in which five grassland plots and one arable plot (with winter rye as catch crop) were irrigated in the period from 17 January to 28 February 2022 in order to replenish the soil moisture content and groundwater supply and reduce drought damage. The plots were irrigated by pumping water from surface water through an outflow hose to ground level. All plots were on sandy soil, with three plots having relatively high groundwater levels and three plots having relatively low groundwater levels. On average, 11.8 mm and 17.8 mm per day were irrigated here, respectively. A total of 90,628 m3 of water was pumped in 43 days and the total irrigated area amounted to almost 14.5 ha. At the locations within the plots where the irrigation was most effective, the groundwater level was raised for an average of 101 days (including 43 days of irrigation) compared to an unaffected reference monitoring well in the area.