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Risto Lauhanen (email), Pekka Pietiläinen, Markku Saarinen, Eljas Heikkinen

Väri-infrakuvat kunnostusojituksen kohdevalinnan tukena

Lauhanen R., Pietiläinen P., Saarinen M., Heikkinen E. Väri-infrakuvat kunnostusojituksen kohdevalinnan tukena.

English title: Usability of infra red imagery in the planning of ditch network maintenance

Tiivistelmä

The purpose of the study was to determine the usability of infra red imagery in evaluating the need for ditch network maintenance on nutrient-poor Scots pine mires. After interpreting a total of 75 tree stands in six peatland areas from the IR imagery, the stands were inventoried in the field. Site type, growing stock and ditch condition were determined. In addition, possible silvicultural treatments were suggested. Sphagnum fuscum, reddish-brown in the imagery indicated ditching areas unsuitable for ditch cleaning or complementary ditching. The estimated mean volumes of the tree stands were -37-+11% of the mean ground inventory values. The true proportions of tree species were in good agreement with the estimations based on the TR imagery. All in all, it was concluded that IR imagery is suitable in evaluating the need for ditch network maintenance on nutrient-poor mires. However, the validity of the method depended on the quality of the imagery and the skill of the interpreter. Keywords: forest drainage, ditch cleaning, complementary ditching, IR imagery, decision making system, environmental protection, biodiversity

Avainsanat
forest drainage; biodiversity; ditch cleaning; environmental protection; complementary ditching; IR imagery; decision making system

Tekijät
  • Lauhanen, The Finnish Forest Research Institute, Kannus Research Station,FIN-69101 Kannus, Finland Sähköposti ei.tietoa@nn.oo (sähköposti)
  • Pietiläinen, Sähköposti ei.tietoa@nn.oo
  • Saarinen, Sähköposti ei.tietoa@nn.oo
  • Heikkinen, Sähköposti ei.tietoa@nn.oo

Vastaanotettu 31.10.2017 Julkaistu 1.1.1995

Katselukerrat 825

Saatavilla http://suo.fi/article/9744 | Lataa PDF

Creative Commons License CC BY-NC-ND 4.0

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Hakutulokset
Päivänen J., Sarkkola S. (2000) The effect of thinning and ditch network mainten.. Suo - Mires and peat vol. 51 no. 3 artikkeli 9797
Lauhanen R., Kaunisto S. (1999) Effect of drainage maintenance on the nutrient s.. Suo - Mires and peat vol. 50 no. 3-4 artikkeli 9785
Lauhanen R., Piiroinen M.-L. et al. (1998) Evaluation of the need for ditch network mainten.. Suo - Mires and peat vol. 49 no. 3 artikkeli 9777
Kangas J., Lauhanen R. (1996) Assessing the impacts of ditch network maintenan.. Suo - Mires and peat vol. 47 no. 2 artikkeli 9754
Lauhanen R., (1994) Tree damage caused by excavating machines in dit.. Suo - Mires and peat vol. 45 no. 2 artikkeli 9736
Lauhanen R., (1993) The productivity, work quality and the costs of .. Suo - Mires and peat vol. 44 no. 4-5 artikkeli 9731