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Articles containing the keyword 'MAB'

Category : Article

article id 5031, category Article
Tom Simons. (1979). Arkkitehdit ja metsänhoitajat Suomen metsäisen maiseman muotoilijoina. Silva Fennica vol. 13 no. 2 article id 5031. https://doi.org/10.14214/sf.a14888
English title: The role of architects and foresters in shaping the forest landscape of Finland.
Original keywords: metsämaisema; maankäyttö; seminaari; maisemasuunnittelu; arkkitehtuuri; luontoarvot
English keywords: forest landscape; land uses; seminar; MAB; architecture; landscape design
Abstract | View details | Full text in PDF | Author Info

The article describes the two approaches which are evident in planning and management of nature and landscape. One is based on traditional architectural thinking, emphasizing the significance of subjective intuition and practical creative work. The other has evolved from the study of the economic utilization of natural resources, emphasizing the significance of rational thinking and scientific analysis.

This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

The PDF includes a summary in English.

  • Simons, E-mail: ts@mm.unknown (email)
article id 5030, category Article
Camilla Rosengren. (1979). Luonnonkasvillisuus asuntoalueilla. Silva Fennica vol. 13 no. 2 article id 5030. https://doi.org/10.14214/sf.a14886
English title: Natural vegetation within housing areas.
Original keywords: maankäyttö; taajamametsät; seminaari; luonnonympäristö; maisemasuunnittelu; taajamat
English keywords: landscape planning; urban forests; land uses; seminar; MAB; natural envirionment; urban areas
Abstract | View details | Full text in PDF | Author Info

The article describes the results of the studies made in 24 Finnish housing areas. They show that the building density is not as important as the way of building and the site planning, in the view of preserving natural vegetation in the site. Building on slopes was difficult with modern building techniques because of the extensive earthwork required. 

This paper was presented in the ‘Man and the Biosphere’ programme Project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki. 

The PDF includes a summary in English. 

  • Rosengren, E-mail: cr@mm.unknown (email)
article id 5029, category Article
Seppo Kellomäki. (1979). Metsän tarjoamat fyysiset hyödyt yhdyskuntasuunnittelussa. Silva Fennica vol. 13 no. 2 article id 5029. https://doi.org/10.14214/sf.a14885
English title: Benefits of forests in urban environment .
Original keywords: kuusi; kaupunkimetsät; maankäyttö; seminaari; meluntorjunta; saasteiden torjunta; metsien ympäristövaikutukset
English keywords: Norway spruce; Picea abies; noise abatement; urban forests; land uses; seminar; MAB; air impurities
Abstract | View details | Full text in PDF | Author Info

The potentials of forests in abatement of urban noise and air impurities are discussed based on literature and calculations. Excess attenuation of 6–7 dB seems to be possible in noise abatement applying Norway spruce (Picea abies (L.) H. Karst.) plantations. The potential in dust sedimentation is of 10,000–20,000 kg/ha/year and absorbtion to 7 kg/ha/yr. Forests seem also have considerable potential for control of climatic conditions in urban areas. Management of forests in urban environment is discussed. 

This paper was presented in the ‘Man and the Biosphere’ programme Project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki. 

The PDF includes a summary in English. 

  • Kellomäki, E-mail: sk@mm.unknown (email)
article id 5028, category Article
Matti Leikola. (1979). MAB 2-projekti metsäbiologisen tutkimustyön tulosten hyödyntäjänä. Silva Fennica vol. 13 no. 2 article id 5028. https://doi.org/10.14214/sf.a14884
English title: Benefits of MAB Project 2 by the research work on forest biology in Finland.
Original keywords: metsäntutkimus; metsäekologia; maankäyttö; seminaari
English keywords: Finland; forest ecology; forest research; land uses; seminar; MAB
Abstract | View details | Full text in PDF | Author Info

MAB Project 2 concentrates on the influences of man’s activities on forests with no special consideration to any particular research field. At the same time as the swift development of research methods has brought the natural sciences and forest biology very near to each other, the circle of users of research results in forest biology has widened to include area and city planners etc. In Finland, the main role of MAB Project 2 is to promote mutual exchange between the users and producers of research results in forest biology and to facilitate both national and international co-operation between all research workers and organizations interested in this field.

This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

  • Leikola, E-mail: ml@mm.unknown (email)
article id 5027, category Article
Ossi Eskelinen. (1979). Pyynikin ulkoilualue. Silva Fennica vol. 13 no. 2 article id 5027. https://doi.org/10.14214/sf.a14883
English title: The natural environmental welfare factors of forested outdoor recreation area Pyynikki.
Original keywords: seminaarit; maankäyttö; Pyynikki; ulkoilualueet
English keywords: Finland; recreation areas; land uses; seminar; MAB
Abstract | View details | Full text in PDF | Author Info

The article examines the outdoor recreation area of Pyynikki in the centre of the city of Tampere in Southern Finland from the viewpoint of social sciences. It was demonstrated that sociological factors are connected with the physical environmental factors by the welfare factors.

This paper was presented in the ‘Man and the Biosphere’ programme Project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

The PDF includes a summary in English.

  • Eskelinen, E-mail: oe@mm.unknown (email)
article id 5026, category Article
Alpo Enivaara. (1979). Pyynikin harjumännikön uudistaminen ja elvyttäminen. Silva Fennica vol. 13 no. 2 article id 5026. https://doi.org/10.14214/sf.a14881
English title: Regeneration and improvement of the Scots pine forest of Pyynikki esker in Southern Finland.
Original keywords: mänty; uudistaminen; seminaarit; maankäyttö; harju; Pyynikki; taajamametsät
English keywords: Pinus sylvestris; regeneration; Scots pine; urban forests; seminar; MAB; natural park
Abstract | View details | Full text in PDF | Author Info

Pyynikki is a unique natural park in the centre of the city of Tampere in Southern Finland. Currently, the forest of Pyynikki is losing its vigour because of aging and environmental factors. In 1977 a policy was designed for the regrowth of Scots pine (Pinus sylvestris L.) forest and improvement of the condition of the trees to avoid the situation that the whole pine forest (34 ha) would be regrown at one time. The period of regrowth of pine forest is 60 years. It is accomplished by cutting small openings, on which 4-year old potted pine saplings are planted. Birch will be planted only on two spots. The aim is that the forest scenery will be maintained as undamaged as possible. The condition of the growing forest will be improved by fertilization and thinning.

This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

The PDF includes a summary in English.

  • Enivaara, E-mail: ae@mm.unknown (email)
article id 5025, category Article
Eero Paavilainen. (1979). MAB 2 -projekti Suomessa. Silva Fennica vol. 13 no. 2 article id 5025. https://doi.org/10.14214/sf.a14879
English title: MAB 2 project in Finland.
Original keywords: seminaarit; maankäyttö; metsäekosysteemit
English keywords: Finland; forest ecosystems; land uses; seminar; MAB
Abstract | View details | Full text in PDF | Author Info

The article examines the problems of interdisciplinary research and the Finnish participation in MAB Project 2, which concentrates on the influences of man’s activities on forests. From the Finnish point of view, the main research areas are the effects of forestry activities which affect large areas, multiple use of forests, forests and environmental pollution, and the effects of energy economy.

This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

The PDF includes a summary in English.

  • Paavilainen, E-mail: ep@mm.unknown (email)
article id 5024, category Article
Ossi V. Lindqvist. (1979). Pelastaako luonnon moninaiskäyttö luonnon? Silva Fennica vol. 13 no. 2 article id 5024. https://doi.org/10.14214/sf.a14878
English title: Will the multiple use of nature save nature?
Original keywords: metsäekologia; metsien monikäyttö; seminaarit; maankäyttö
English keywords: forest ecology; multiple use of forests; land uses; seminar; MAB
Abstract | View details | Full text in PDF | Author Info

The term ’multiple use’ was introduced in Finland in the late 1960’s as a planning principle for the use of natural resources. It was hoped that multiple use, in contrast to ’single use’, would be less destructive and more amenable to multiple interests and to more efficient planning. However, the term ’multiple use’ carries several hidden assumptions which superficially at least seem easy to handle but which may, at the very end, prove equally destructive to the planned object. This term generally lacks the dimensions of time and place. In reality, different uses follow in a definite sequence and in definite place. As a planning strategy, multiple use may lead, if carelessly applied, to quite unexpected results that run contrary to the intended purposes.

This paper was presented in the ‘Man and the Biosphere’ programme project 2 seminar held on August 24–25 1978 in Hyytiälä research station of University of Helsinki.

The PDF includes a summary in English.

  • Lindqvist, E-mail: ol@mm.unknown (email)
article id 5023, category Article
Anu Pärnänen. (1979). Erilaisten maankäyttötapojen ja hoitotoimenpiteiden ekologiset vaikutukset metsiin. Silva Fennica vol. 13 no. 2 article id 5023. https://doi.org/10.14214/sf.a14877
English title: Ecological effects of different land uses and management practices on boreal landscapes – Man and the Biosphere Programme, seminar of Project 2.
Original keywords: ekosysteemit; metsäekologia; seminaarit; maankäyttö; MAB
English keywords: forest ecology; forest ecosystems; land uses; UNESCO; seminar
Abstract | View details | Full text in PDF | Author Info

Man and the Biosphere (MAB) programme of UNESCO was launched in 1970. This interdisciplinary programme represents a new integrated approach to research, training and action aimed at improving man’s partnership with the environment. It consists of 14 project areas.

The Academy of Finland and the Finnish Committee for the MAB, in cooperation with the University of Helsinki and the city of Tampere organized a seminar with an aim of reviewing the execution of the Finnish participation in the MAB project No. 2. The seminar took place at Hyytiälä, a forest research station of the University of Helsinki, on August 24–25 1978.

During the seminar, an excursion was made to Pyynikki esker, a unique natural park close to the centre of the city of Tamper. Eight papers were presented and discussed in the seminar. The papers are published in this issue of Silva Fennica.

The PDF includes a summary in English.

  • Pärnänen, E-mail: ap@mm.unknown (email)

Category : Article

article id 7245, category Article
Erik Lönnroth. (1929). Theoretical observations on volume growth and drain of a forest stand. Acta Forestalia Fennica vol. 34 no. 32 article id 7245. https://doi.org/10.14214/aff.7245
Keywords: volume; forest growth; stand; natural drain
Abstract | View details | Full text in PDF | Author Info

In a natural state growing closed forest the amount of timber grows yearly. However, in the same time the timber volume also decreases when part of the trees die in the competition for light and other growth factors.

There are many interactive functions and characteristic that influence the growth and drain in a stand. These can be illustrated as mathematical models. The article discusses a set of models.

The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander.

  • Lönnroth, E-mail: el@mm.unknown (email)

Category : Research note

article id 23064, category Research note
Henrik Lindberg, Tuomas Aakala, Ilkka Vanha-Majamaa. (2024). Ignition probability and fuel consumption of boreal ground vegetation fuels – an experimental study in Finland. Silva Fennica vol. 58 no. 3 article id 23064. https://doi.org/10.14214/sf.23064
Keywords: forest fires; ground vegetation; prescribed burning; flammability; fuel moisture content; mass loss rate
Highlights: Ignition probability and mass loss rates clearly differed in experimental burnings among four common circumboreal moss and lichen species; Cladonia rangiferina was the most flammable, Dicranum spp. the least flammable and Pleurozium schreberi and Hylocomium splendens intermediate.
Abstract | Full text in HTML | Full text in PDF | Author Info

In boreal forests fires often ignite and spread within the dominant moss and lichen cover of the ground layer vegetation, which thus greatly influences fire hazard. We used an experimental set-up in greenhouse conditions to study the differences in how (1) fuel moisture and (2) wind velocity influence the ignition probability and fuel consumption among four common circumboreal ground vegetation fuels, Pleurozium schreberi (Willd. ex Brid.) Mitt., Hylocomium splendens Schimp., Dicranum spp. and Cladonia rangiferina (L.) F. H. Wigg. Our results show that the reindeer lichen C. rangiferina was clearly the most flammable species, with high ignition probability even at high moisture contents and low wind velocities. Of the mosses, Dicranum was the least flammable, with low ignition probability and mass loss at low wind velocities regardless of moisture content. P. schreberi and H. splendens behaved somewhat similarly with wind velocities quickly increasing the initially low ignition probability and mass loss observed in the absence of wind. However, especially for mass loss, among-species differences tended to disappear with stronger winds. The observed differences can be explained by the different structures and growth forms of the studied species and open a potential avenue for improving forest fire risk predictions.

  • Lindberg, Häme University of Applied Sciences, School of Bioeconomy, Visamäentie 35 A, P.O. Box 230, FI-13100 Hämeenlinna, Finland ORCID https://orcid.org/0000-0001-9045-2673 E-mail: henrik.lindberg@hamk.fi (email)
  • Aakala, University of Eastern Finland, School of Forest Sciences, P.O. Box 111, FI-80101 Joensuu, Finland ORCID https://orcid.org/0000-0003-0160-6410 E-mail: tuomas.aakala@uef.fi
  • Vanha-Majamaa, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland E-mail: ilkka.vanha-majamaa@luke.fi

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