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

article id 4949, category Article

Seppo Kellomäki, Antti Haapanen, Hellevi Salonen. (1976). Tree stands in urban noise abatement. Silva Fennica vol. 10 no. 3 article id 4949. https://doi.org/10.14214/sf.a14795

Keywords: stand characteristics; noise abatement; urban forests

Abstract | View details | Full text in PDF | Author Info

The aim of the study was to determine which characteristics of tree stands could be used in urban noise control and to develop guidelines for practical urban forestry. The attenuation of artificially produced noise was measured in various types of stands. The effect of tree stands on noise attenuation has been analysed using a model based on the physics of sound propagation.

The results show that the excess noise attenuation caused by trees can be in good situations 60% measured in energy units, compared with the attenuation caused by geometric spreading. This is 5–8 dB. The total amount of needles, leaves and branches of a stand proved to be the most important factors in noise attenuation. However, the density and height of a stand had rather high value in predicting the behaviour of noise in tree stands. Based on multiple regression between noise attenuation and tree species composition, density and height of a stand it was developed the nomograms with which the noise level at a certain point can be predicted when the tree stand characteristics, the distance and the noise level of the noise source are known and on the opposite way.

The PDF includes a summary in Finnish.

Kellomäki, E-mail: sk@mm.unknown
Haapanen, E-mail: ah@mm.unknown
Salonen, E-mail: hs@mm.unknown

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