Why is marram grass planted on sand dunes?

为什么要在沙丘上种滨草？

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The agency's Nick Bromidge said the area had been chosen for a trial marram grass planting.

BBC: Laughton Road near Gainsborough

Geoff Willetts, senior coast and countryside officer at Fylde Borough Council, said marram grass would also be planted on the dunes.

BBC: Fylde sand dune restoration boosted by Defra funding