Yes, your shed does need a base. This is to give it a solid, level foundation. Open soil will not help with the longevity of the shed itself or the contents within. The best materials to use to make your shed base are concrete, natural stone or wood.
Kyle
Kyle of Lochalsh is a village in the historic area of Ross-shire on the northwest coastline of Scotland, situated around 55 miles (90 km) west-southwest of Inverness. It lies on the Lochalsh peninsula, at the entrance to Loch Alsh, opposite the town of Kyleakin on the Isle of Skye. A ferryboat used to attach the two villages until it was changed by the Skye Bridge, about a mile (1.6 km) to the west, in 1995. The town is the transport and shopping center for the location as well as having a harbour and also marina with pontoons for maritime visitors. The bordering scenery as well as wild animals are considered as destinations of the town, as is the slow-moving rate of life. Crofting as well as more current crofting pursuits like salmon farming are a few of the tasks happening in Kyle of Lochalsh.