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Ath the Northsea coast of the the Netherlands a number of environmental factors can be named that change seen from the coast line along a perpendicular land inwards. Three factors in this profile decrease rapidly at a short distance, namely the salinity, wind velocity and mechanical influence of moving sand particles. One factor that increases is for example the formation of a stable soil. The zonation that arises shows a transition from a band without vegetation to avery open system with only a few plants adapted to extreme conditions, like Sand Couch and See Rocket, to an open grassland dominated by Marram Grass. Behind the first row of dunes the landscape changes to a more closed grassland and brushwood (low shrubs vegetation with Seabuckthorn, Sweet Briar, Dog-rose, Honey Suckle and Wild Privet). More landinward the inner dune wood can be found in which is tall trees occur, like Birch, Aspen, Oak and Sycamore.
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