Current issue: 58(5)
Articles by Eino Mälkönen
Category : Article
This bibliography consists of monographs, papers published in periodicals and journals and collections of scientific papers from research and educational institutes, and transactions from scientific congresses, seminars, symposia and meetings.
The publications have been divided into three basic sections. In each section the publications are listed in alphabetical order by the author(s) or title. The total number of the titles in this bibliography is 465.
The Society of Forestry in Finland (now the Finnish Society of Forest Science) arranged on 26th April 1984 a Forestry Science Day centred on the theme ”The role of Forestry Research in Providing a Scientific Basis for Practical Forestry”. Specialists in forestry and forest policy reviewed the role, present situation and future tasks of forest research from different points of view, in their papers. This article includes the talks given in the event in Finnish and an English summary.
A mature Scots pine (Pinus sylvestris L.) stand growing on a site of the Vaccinium type in Southern Finland was fertilized with nitrogen-rich NPK fertilizer at a level of 150 kg pure nitrogen per hectare. The sample plots were also irrigated during four growing seasons. The total amount of irrigation during this period was 1,200 mm. Fertilization alone increased the coverage of grasses and dwarf shrubs. The culmination of the increase occurred during the second growing season after the start of the treatment. The rapid effect of irrigation on the coverage of ground vegetation was not so strong as that of fertilization. It was concluded on the basis of the developed growth model that the coverage of dwarf shrubs, especially Calluna vulgaris, was, however, increased with the fertilization treatment for a prolonged period. Fertilization and irrigation had no visible effect on the coverage of lichens and mosses.
The PDF includes a summary in Finnish.
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Mälkönen,
E-mail:
em@mm.unknown
- Aro-Heinilä, E-mail: va@mm.unknown
- Kellomäki, E-mail: sk@mm.unknown
This article is a book review on the Finnish book ’Tutkimusraportin laadinnan perusteita’ by professor Matti Kärkkäinen. The book handles on priciples on writing a research report.
-
Mälkönen,
E-mail:
em@mm.unknown
This paper analyses the nutrient loses caused by whole-tree harvesting on the basis of the literature data. It has been considered that traditional stemwood harvesting does not lead to impoverishment of the soil because the nutrient content of the wood is quite low. The nutrient loss occurring in connection with heavy thinnings and whole-tree harvesting has been considered so great that it has to be compensated by fertilizer application. In comparison with harvesting unbarked stem timber, whole-tree harvesting has been found to increase the nutrient loss at the stage of final cutting as follows: N2 to 4 times, P 2 to 5 times, K 1.5 to 3.5 times and Ca 1.5 to 2.5 times. Depending on the conditions prevailing on the site, any one of these nutrients may be the limiting factor for tree growth during the next tree generation
The PDF includes a summary in Finnish.
-
Mälkönen,
E-mail:
em@mm.unknown
Category : Research article
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Saarsalmi,
Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01301 Vantaa, Finland
E-mail:
anna.saarsalmi@metla.fi
- Mälkönen, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01301 Vantaa, Finland E-mail: em@nn.fi
- Piirainen, Finnish Forest Research Institute, Joensuu Research Station, P.O. Box 68, FIN-80101 Joensuu, Finland E-mail: sp@nn.fi
