Current issue: 52(3)
The article is a detailed review on the problems in the general parceling out of land (isojako) in Kuusamo, Kemijärvi and Kuolanjärvi counties from the context of forest policy. The disputes about division of the land originate from military tenure contracts (knihtikohtrahti) made with the local tenants in 1700s. Later some counties got alleviations in the contracts concerning taxation and partition of land. These alleviations delayed the parceling out of land in the area. According to the article, from the forest policy point of view, the inhabitants in Kuusamo, Kemijärvi and Kuolanjärvi were conveyed disproportionately large forest properties from the state due to the military tenure contracts. This gave them undue benefits from the state compared to the neighbouring counties.
The PDF includes a summary in German.
The vegetation of the forest and peatland site types in Northern Finland differ markedly from those in Southern Finland, also the vegetation of the subtypes in the north is distinctive. A line survey was conducted to study the distribution of forest and peatland site subtypes in Northern Finland.
The vegetation of rich grass-herb forest types differs little from the poorer grass-herb forest types in Northern Finland. They abundance decrease towards north. The main fresh mineral soil sites are Myrtillus site type, Hylocomnium-Myrtillus site type and their paludified forms. The abundance of the fresh mineral soil sites decreased towards north so that in Kemi the proportion was 20.5 and in Lapland 12.0%. A transition from the fresh to the drier site types is gradual. The Vaccinium site type that is dominant in the south, is rare in the north, where it is replaced by Empetrum-Vaccinium type. The proportion of dry forest sites increase towards north, in average their distribution is 25% of the lands. There are numerous subtypes, which can be merged in to four main site types: Calluna, Cladina-Calluna, Myrtillus-Cladina and Cladina site type. The peatlands are more abundant in the southern part of the study area. The most common peatland types are pine swamps.
The PDF includes a summary in German.
The most abundant tree species occur in different variants in different geographical regions. They differ in their genetic, biological and partly also in morphological characters, however making clear difference between these subspecies is not possible. The different subspecies have developed according the respective areas' climatic and soil conditions, developing adaptive characters. These subspecies play a great role in practical forest management, since they differ in for forestry important characters, such as cold tolerance or stem form.
The subspecies hybridize with each other in areas where their distribution areas overlap. In these areas the subspecies cannot be always clearly defined.
The article is an abridged version of an essay published in the “Lännetär” (a book published in Finnish on the occasion of the 50th birthday of Professor E. N. Setälä). The article presents the main points of the plant migration to Finland after the glacial period. The research method was based on J. A. Palmen’s work on flyways of the birds. Some results are achieved through plant paleontological studies, others rely on the current distribution of the species.
Some species, such as trees birch, spruce and pine have migrated widely in Finland and there isn’t any specific migration way to be found. Those species do not have any specific preconditions for their habitat and adapt also to barren soils. Species that require more specific habitats can migrate only through ways where those preconditions are available.
The article is based on the work “Metsänhoidon perusteet I” [The fundamentals of Forest management I] by the author (1919 in Finnish). The different processes of the soil and the vegetation are dependent on the climatic conditions, but also affect each other. The article presents the climatic zones of the earth and their most important characteristics in regard of cultivation of (to respective zone) exotic trees species and agriculture.