The effects of timing of pre-commercial thinning and stand density on stem form and branch characteristics of Pinus sylvestris

Forestry

Volumn 80, Issue 3, 2007, Pages 323-335

  Ulvcrona, Kristina Ahnlund ^a   Claesson, Svante ^b   Sahlén, Kenneth ^a   Lundmark, Tomas ^a  

^a SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES   (Sweden)

^b National Board of Forestry   (Sweden)

Author keywords

[No Author keywords available]

Indexed keywords

CANOPY ARCHITECTURE; CONIFEROUS FOREST; DIAMETER; EXPERIMENTAL STUDY; FORESTRY PRODUCTION; THINNING;

PINUS SYLVESTRIS;

EID: 34547660012     PISSN: 0015752X     EISSN: 14643626     Source Type: Journal    
DOI: 10.1093/forestry/cpm011     Document Type: Article

References (27)

1. Andersson, S.-O 1968 Röj för mer virke. Research Notes 13, Department of Reforestation, Stockholm, pp. 1-4 (in Swedish).
2. Anonymous 1994 Nordiskt Trä. Sorteringsregler för sågat virke av furu och gran. Arbor publishing, Stockholm, pp. 1-64. (in Swedish).
3. Anonymous 1999a Minitab Statistical Software Release 13 for Windows.
4. Anonymous 1999b. Regulations for Measuring of Round-Wood. Circular VMR 1-99, The Timber Measurement Council. Märsta, Sweden, 1-40.
5. Anonymous 1999c SPSS Advanced Models 10.0. Prentice Hall, Chicago, pp. 1-497.
6. Elfving, B. 1975 Volume and Structure in Unthinned Stands of Scots Pine. Research Notes 35, Department of Forest Yield Research, Royal College of Forestry, Stockholm, pp. 1-128 (in Swedish with English summary).
7. Fahlvik, N., Ekö, P-M. and Pettersson, N. 2005 Influence of precommercial thinning grade on branch diameter and crown ratio in Pinus sylvestris in southern Sweden. Scand. J. For. Res. 20, 243-251.
8. Fryk, J. 1984 Wide Spacing after Cleaning of Young Forest Stands - Stand Properties and Yield. Report 13, Department of Forest Yield Research, Swedish University of Agricultural Sciences, Garpenberg, pp. 1-153 (in Swedish with English summary).
9. Haapanen, M., Velling, P. and Annala, M.L. 1997 Progeny trial estimates of genetic parameters for growth and quality traits in Scots Pine. Silva Fenn. 31, 3-12.
10. Hynynen, J. 1995 Predicting tree crown ratio for unthinned and thinned Scots pine stands. Can. J. For. Res. 25, 57-62.
11. Johansson, K. 1992 Effects of initial spacing on the stem and branch properties and graded quality of Picea abies (L.) Karst. Scand. J. For. Res. 7, 503-514.
12. Kellomäki, S. and Tuimala, A. 1981 Effect of stand density on branchiness of young Scots pines. Folia For. 478, 1-27. (in Finnish with English summary).
13. Lämsä, P., Kellomäki, S. and Väisänen, H. 1990 Branchiness of young Scots pine as related to stand structure and site fertility. Folia For. 746, 1-22. (in Finnish with English summary).
14. Mäkinen, H. 1996 Effect of intertree competition on branch characteristics of Pinus sylvestris Families. Scand. J. For. Res. 11, 129-136.
15. Mäkinen, H. 1999 Effect of stand density on radial growth of branches of Scots pine in southern and central Finland. Can. J. For. Res. 29, 1216-1224.
16. Mäkinen, H. and Colin, F. 1998 Predicting branch angle and branch diameter of Scots pine from usual tree measurements and stand structural information. Can. J. For. Res. 28, 1686-1696.
17. Mäkinen, H. and Colin, F. 1999 Predicting the number, death, and self-pruning of branches in Scots pine. Can. J. For. Res. 29, 1225-1236.
18. Moberg, L. 1999 Models of knot properties for Norway spruce and Scots Pine. Acta Univ. Agric. Sueciae Silvestria. 121, 1-24.
19. Nilsson, U. and Gemmel, P. 1993 Changes in growth and allocation of growth in young Pinus sylvestris and Picea abies due to competition. Scand. J. For. Res. 8, 213-222.
20. Persson, A. 1977 Quality Development in Young Spacing Trials with Scots Pine. Research Notes 45, Department of Forest Yield Research. Royal College of Forestry, Stockholm, pp. 1-152. (in Swedish with English summary).
21. Pietilä, J. 1989a Factors affecting the healingover of pruned Scots pine knots. Silva Fenn. 23, 125-158.
22. Pietilä, J. 1989b Shape of Scots pine knots close to the stem pith. Silva Fenn. 23, 287-299.
23. Ruha, T. and Varmola, M. 1997 Precommercial thinning in naturally regenerated Scots pine stands in northern Finland. Silva Fenn. 31, 401-415.
24. Sjølte-Jørgensen, J. 1967 The influence of spacing on the growth and development of coniferous plantations. Int. Rev. For. Res. 2, 43-94.
25. Thernström, P.O. 1982 Några resultat från sex röjningsförsök med röjning i tallungskog vid olika beståndsålder. Report 3, Department of Forest Yield Research, Swedish University of Agricultural Sciences, Garpenberg, pp. 1-69. (in Swedish).
26. Uusvaara, O. 1974 Wood quality in plantation-grown Scots Pine. Metsäntutkimuslaitoksen julkaisuja. 80, 1-105.
27. Varmola, M. and Salminen, H. 2004 Timing and intensity of precommercial thinning in Pinus sylvestris stands. Scand. J. For. Res. 19, 142-151.