Tero Heinonen, Mikko Kurttila, Timo Pukkala. (2007). Possibilities to aggregate raster cells through spatial optimization in forest planning. Silva Fennica vol. 41 no. 1 article id 474. https://doi.org/10.14214/sf.474

Keywords: threshold accepting; spatial optimisation; landscape metrics; old forest

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

Heinonen, University of Joensuu, Faculty of Forestry, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: tero.heinonen@joensuu.fi
Kurttila, Finnish Forest Research Institute, Joensuu Research Unit, P.O. Box 68, FI-80101 Joensuu, Finland E-mail: mk@nn.fi
Pukkala, University of Joensuu, Faculty of Forestry, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: tp@nn.fi

article id 419, category Research article

Tero Heinonen, Timo Pukkala. (2004). A comparison of one- and two-compartment neighbourhoods in heuristic search with spatial forest management goals. Silva Fennica vol. 38 no. 3 article id 419. https://doi.org/10.14214/sf.419

Keywords: simulated annealing; Hero; tabu search; 2-optimal heuristic; spatial optimisation; random ascent

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

This study presents a comparison of the performance of four heuristic techniques with one- and two-compartment neighbourhoods in harvest scheduling problems including a spatial objective variable. The tested heuristics were random ascent, Hero, simulated annealing and tabu search. All methods seek better solutions by inspecting the neighbourhood solutions, which are combinations that can be obtained by changing the treatment schedule in one (one-compartment neighbourhood) or two (two-compartment neighbourhood) compartments. The methods and neighbourhoods were examined in one artificial and four real landscapes ranging from 700 to 981 ha in size. The landscapes had 608 to 900 stand compartments, and the examined planning problems had 2986 to 4773 binary decision variables. The objective function was a multi-objective utility function. The spatial objective variable was the percentage of compartment boundary that joins two compartments, both of which are to be cut during the same 20-year period. The non-spatial objectives were net incomes of three consecutive 20-year management periods and the remaining growing stock volume at the end of the third 20-year period. In another problem formulation, the total harvest of the first 20-year period was used as an objective variable together with the spatial objective. The results showed that a two-compartment neighbourhood was systematically and often clearly better than a one-compartment neighbourhood. The improvements were greatest with the simplest heuristics, random ascent and Hero. Of the four heuristics, tabu search and simulated annealing proved to be the best methods, but with a two-compartment neighbourhood the differences between methods were negligible.

Heinonen, University of Joensuu, Faculty of Forestry, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: th@nn.fi
Pukkala, University of Joensuu, Faculty of Forestry, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: timo.pukkala@joensuu.fi

Click this link to register to Silva Fennica.

If you are a registered user, log in to save your selected articles for later access.

Contents alert

Your selected articles
Send to email

Punttila P., Autio O. et al. (2016) The effects of drainage and restoration of pine .. Silva Fennica vol. 50 no. 2 article id 1462 (remove) | Edit comment

Gartner M. A., Kaltenbrunner M. et al. (2024) Dynamic box assignment planning in log yards Silva Fennica vol. 58 no. 1 article id 23032 (remove) | Edit comment

Heikurainen L., (1957) Changes in depth and top width of forest ditches.. Acta Forestalia Fennica vol. 65 no. 5 article id 7468 (remove) | Edit comment

Riihinen P., (1963) Economic models underlying forest policy program.. Acta Forestalia Fennica vol. 75 no. 5 article id 7139 (remove) | Edit comment

Cajander A. K., (1949) Forest types and their significance Acta Forestalia Fennica vol. 56 no. 4 article id 7395 (remove) | Edit comment

Schmidt-Vogt H., (1977) Trends in the forest management in Central Europe Silva Fennica vol. 11 no. 1 article id 4961 (remove) | Edit comment

Donnelly L., Grant O. M. et al. (2017) Effect of deployment-type on stem growth, biomas.. Silva Fennica vol. 51 no. 1 article id 1714 (remove) | Edit comment

Ahtikoski A., Väätäinen K. et al. (2024) The effects of the EU’s forest-related policies .. Silva Fennica vol. 58 no. 3 article id 23018 (remove) | Edit comment

Kuusela K., (1960) Variation of the site patterns and growing stock.. Acta Forestalia Fennica vol. 72 no. 3 article id 7120 (remove) | Edit comment

Suomen tilastoseura ., Finnish Society of Forest Science . (1985) Statistical methods in forest inventory Silva Fennica vol. 19 no. 3 article id 5242 (remove) | Edit comment

Kellomäki S., (1978) Effects of nitrogen fertilization on photosynthe.. Silva Fennica vol. 12 no. 3 article id 5006 (remove) | Edit comment

Tanttu A., (1915) Studies on forest growth of drained peatlands Acta Forestalia Fennica vol. 5 no. 2 article id 7011 (remove) | Edit comment

Jansons Ā., Matisons R. et al. (2018) Performance variation of lodgepole pine provenan.. Silva Fennica vol. 52 no. 5 article id 10014 (remove) | Edit comment

Seppälä A., (1960) Publications of the Society of Forestry in Finla.. Silva Fennica vol. 0 no. 103 article id 4691 (remove) | Edit comment

Vehkamäki S., (1993) Pressures for changes in the use of forests Silva Fennica vol. 27 no. 3 article id 5515 (remove) | Edit comment

Pietilä J., (1989) Shape of Scots pine knots close to the stem pith. Silva Fennica vol. 23 no. 4 article id 5391 (remove) | Edit comment

Karjalainen T., Packalen P. et al. (2019) Predicting factual sawlog volumes in Scots pine .. Silva Fennica vol. 53 no. 4 article id 10183 (remove) | Edit comment

Aaltonen V. T., (1934) The development of a forest stand and the growth.. Acta Forestalia Fennica vol. 40 no. 21 article id 7298 (remove) | Edit comment

Norrlin J. P., (1923) Principles of organization of botanical excursio.. Acta Forestalia Fennica vol. 23 no. 7 article id 7106 (remove) | Edit comment

Dering M., Sękiewicz K. et al. (2018) Spatial genetic structure and clonal structure o.. Silva Fennica vol. 52 no. 3 article id 9987 (remove) | Edit comment

Kokkonen P., (1926) Observations on the structure of soil frost Acta Forestalia Fennica vol. 30 no. 3 article id 7198 (remove) | Edit comment

Lahtinen A., (1993) On the construction of shape preserving taper cu.. Silva Fennica vol. 27 no. 1 article id 5496 (remove) | Edit comment

Palosuo V. J., (1979) Forests for people - World Forestry Congress Silva Fennica vol. 13 no. 3 article id 5035 (remove) | Edit comment

Roitto Y., (1975) Optimization of roundwood transport Silva Fennica vol. 9 no. 1 article id 4915 (remove) | Edit comment

Metsähallitus ., (1937) Professional development courses for foresters i.. Silva Fennica vol. no. 42 article id 4504 (remove) | Edit comment

Kärkkäinen M., (1984) The proper attitude towards birch in forestry Silva Fennica vol. 18 no. 1 article id 5206 (remove) | Edit comment

Omwami R. K., (1988) An economic model underlying the choice of capit.. Acta Forestalia Fennica vol. 0 no. 204 article id 7651 (remove) | Edit comment

Kujala V., (1929) Populations and the ecological layers of vegetat.. Acta Forestalia Fennica vol. 34 no. 17 article id 7230 (remove) | Edit comment

Modig E., Magnusson B. et al. (2012) Damage to residual stand caused by mechanized se.. Silva Fennica vol. 46 no. 2 article id 442 (remove) | Edit comment

Pasalodos-Tato M., Pukkala T. et al. (2009) Optimal management of Pinus radiata silvopastora.. Silva Fennica vol. 43 no. 5 article id 176 (remove) | Edit comment

Follow @SilvaFennica