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Botaniske verneverdier i Sylan

出版	Norges teknisk-naturvitenskapelige universitet. Vitenskapsmuseet, 2003
ISBN	82712667649788271266769
URL	http://books.google.com.hk/books?id=tfZgNAAACAAJ&hl=&source=gbs_api

註釋"Botanical values in the Sylan area are studied as a part of a plan for protection of the area. The project has consisted of literature studies, fieldwork and compilation of existing and new information about the flora and vegetation. The work of Rolf Nordhagen in the 1920s has been of particular importance. The fieldwork is concentrated to the most interesting and/or least investigated areas: Sankådalen, Essandheim-Fiskådalen, Sylmassivet, Nedalshytta-Pikhaugan and the northern slopes of Skardsfjella down to the shores of Nesjøen. The studied area is approximately 210 km2, and situated 733-1743 m a.s.l., in the northern boreal to high alpine vegetation zones, and in the slightly oceanic and indifferent vegetation sections. Mire landscapes with flat fens, sloping fens, string fens and mixed mires cover large expanses of land in the northern boreal and low alpine zones, and the mire vegetation is varied. Small palsas are registered on Sankkjølen and in Rangeldalen. The mires north of Essandsjøen are classified to be of international importance for preservation. The upland birch woodlands are dominated by poor dwarf-shrub types; and more productive and richer, tall-herb types occur scattered. Downy birch (Betula pubescens) is the predominant tree species. The climatic woodland limit in Sylmassivet is approximately 900 m a.s.1., and reaches 915 m a.s.l. near Fiskåa. The woodland limit is lower in the northern parts of the area. The vegetation in the alpine zones is mostly poor, but areas with rich vegetation are found in Sankåkleppen, Remslikleppen, Bandaklumpen and several other places. 331 species of vascular plants (366 taxa) are registered in Sylan, and a list of species is presented. Compared to other upland areas in southern Norway, the Sylan area has in former times been little used for farming, summer farming, haymaking and grazing (with exception for keeping reindeer). The combination of large regional variation, well-developed subtypes of a number of vegetation types, and the value as an area of reference for relatively undisturbed alpine vegetation, gives Sylan high botanical value. Combined with the importance of Sylan as an area for outdoor life for people of Norway and Sweden we conclude that it is natural to protect Sylan as a national park"--Page 1.