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Acta Forestalia Fennica no. 108 | 1970

Category: Article

article id 7542, category Article
Yrjö Ilvessalo. (1970). Metsiköiden luontainen kehitys- ja puuntuottokyky Pohjois-Lapin kivennäismailla. Acta Forestalia Fennica no. 108 article id 7542. https://doi.org/10.14214/aff.7542
English title: Natural development and yield capacity of forest stands on mineral soils in Northern Lapland.

The article is fifth part of a series of papers on fully stocked natural normal stands on mineral soils in Finland. This part studies the stands in Northern Lapland, dominated by Scots pine (Pinus sylvestris L.). This investigation was concerned mainly with Scotch pine stands, using Norway spruce (Picea abies (L.) H. Karst.) and birch (Betula sp.) stands for comparison only. 107 sample plots were measured.

The most common forest types in the area are Empetrum-Myrtillus-(Cladina) type, EM(C1), Ericacea-Cladinae type, ErCIT, P-L, and Cladina type, C1T. Stand development is more rapid and wood production greater in EM(C1) type than ErCIT, while the C1T stands are further behind in all respects. The average differences in stand characteristics between forest types are roughly similar, but for cubic volume and total production less, than between the more southerly forest types. Measurements made from increment cores taken at breast height have confirmed that variation of the pine annual ring width has on average been very considerable, in accordance with the climatic, mainly temperature, variations, in the investigation area close to the north pine forest limit.

The few plots from birch and spruce stands measured as samples in the northern Lapland investigation area indicate the generally poor development and wood production of these stands by comparison with pine stands.

The PDF includes a summary in English.

  • Ilvessalo, ORCID ID:E-mail:

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