Postglasiale skoggrenser i sentrale sørnorske fjelltrakter.14C-datering av subfossile furu- og bjørkerester. (Postglacial forest limits in central south Norwegian mountains. Radiocarbon datings of subfossil pine and birch specimens)

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Aas, B. & Faarlund, T. 1988. Postglasiale skoggrenser i sentrale sørnorske fjelltrakter. 14C-datering av subforssile furu- og bjørkerester. (Postglacial forest limits in central south Norwegian mountains. Radiocarbon datings of subfossil pine- and birch specimens.) Norsk geogr. Tidsskr. Vol. 42, 25–61. Oslo. ISSN 0029-1951. Subfossil specimens of Scots pine (Pinus sylvestris L.) and mountain birch (Betula pubescens Ehrh. subsp. tortuosa (Ledeb.)) have been collected in central south Norwegian mountains at levels from 900 to 1370 m a.s.l. Radiocarbon datings provide evidence of a pine forest limit having exceeded 1200 m a.s.l. in the first half of the Boreal period, a culmination at about 1300 m during the first part of the Atlantic and a high, if somewhat declining, level until the last part of the Subboreal period (i.e. about 3000 years before present (BP)). Between the pine forest and the alpine tundra a subalpine birch zone has prevailed throughout Postglacial time, possibly approaching 1400–1450 m a.s.l. The area of alpine tundra has been smaller than now. Reindeer, living in the open mountain forest provided prey for Stone Age hunters. Most Stone Age sites known from present day alpine surroundings may originally have been located in, or near, the mountain forest, a possibility which may also be due to many seters (summer farms) at high altitudes.

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