Een bijdrage tot de kennis van de bodem van Schouwen-Duiveland en Tholen naar de toestand voor 1953
1960
Kuipers, S.F.
By order of the State Service for Agricultural Restoration, the whole area of the Delta Islands of Schouwen-Duiveland and Tholen was mapped to obtain data on inundated soils. Beside soil maps and descriptions a review of the holocene geology was included. A reconstruction was made of post-Boreal incursions and recessions, their periodicity and characteristics. Soil properties (CaCO 3 content, grain-size distribution) could be correlated with conditions during sedimentation.Decalcification, a process that plays an important part in soil genesis in these tidal flats and tidal marshes, was studied by comparing polders of different age allowing for local effects. The rate of decalcification could be estimated to 1 % in 80- 90 years. The influences of fresh and saline seepage on the profile and of salt susceptibility were established. From trial harvests and data on farm rents, conclusions were drawn on the suitability of the soil types, but many other factors often caused irregularities.
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