Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland
Drained peatlands in northern Europe comprise more than 10 million ha of forestland and thus constitute a considerable production potential in forestry. Much of this area consists of stands dominated by Scots pine and close to maturity regarding commercial thinning. The trees within these stands...
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| Format: | Article |
| Language: | English |
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Finnish Society of Forest Science
2004-01-01
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| Series: | Silva Fennica |
| Online Access: | https://www.silvafennica.fi/article/407 |
| _version_ | 1811243990336405504 |
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| author | Kojola, Soili Penttilä, Timo Laiho, Raija |
| author_facet | Kojola, Soili Penttilä, Timo Laiho, Raija |
| author_sort | Kojola, Soili |
| collection | DOAJ |
| description | Drained peatlands in northern Europe comprise more than 10 million ha of forestland and thus constitute a considerable production potential in forestry. Much of this area consists of stands dominated by Scots pine and close to maturity regarding commercial thinning. The trees within these stands typically vary in terms of age, size, and growth rate. The impacts of silvicultural cuttings on these uneven-structured stands are inadequately known. We simulated the impacts of a control regime with no thinnings, and three different thinning regimes, involving different thinning intensities, on the development of fifteen pine-dominated stands in Finland. The simulations started from the first thinnings and were continued until regeneration maturity. The predicted total yields ranged from 244 to 595 m3 haâ1, depending on site and thinning regime. The highest total yields were observed for the control regime in which 18â38% of the yield was, however, predicted to self-thin by the end of the simulation. Thus, the differences in the yields of merchantable wood were fairly small among the compared regimes. However, the regimes involving thinnings generally needed less time than the control regime to reach regeneration maturity. The mean annual increment of total stem volume was at its highest in the control regime. The highest mean annual increment of merchantable wood was obtained in the regime involving two moderate thinnings, but excluding the most low-productive sites where thinnings did not increase the yield of merchantable wood. |
| first_indexed | 2024-04-12T14:18:05Z |
| format | Article |
| id | doaj.art-f62b429f3eb341b287c01600708e7150 |
| institution | Directory Open Access Journal |
| issn | 2242-4075 |
| language | English |
| last_indexed | 2024-04-12T14:18:05Z |
| publishDate | 2004-01-01 |
| publisher | Finnish Society of Forest Science |
| record_format | Article |
| series | Silva Fennica |
| spelling | doaj.art-f62b429f3eb341b287c01600708e71502022-12-22T03:29:40ZengFinnish Society of Forest ScienceSilva Fennica2242-40752004-01-0138410.14214/sf.407Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatlandKojola, SoiliPenttilä, TimoLaiho, RaijaDrained peatlands in northern Europe comprise more than 10 million ha of forestland and thus constitute a considerable production potential in forestry. Much of this area consists of stands dominated by Scots pine and close to maturity regarding commercial thinning. The trees within these stands typically vary in terms of age, size, and growth rate. The impacts of silvicultural cuttings on these uneven-structured stands are inadequately known. We simulated the impacts of a control regime with no thinnings, and three different thinning regimes, involving different thinning intensities, on the development of fifteen pine-dominated stands in Finland. The simulations started from the first thinnings and were continued until regeneration maturity. The predicted total yields ranged from 244 to 595 m3 haâ1, depending on site and thinning regime. The highest total yields were observed for the control regime in which 18â38% of the yield was, however, predicted to self-thin by the end of the simulation. Thus, the differences in the yields of merchantable wood were fairly small among the compared regimes. However, the regimes involving thinnings generally needed less time than the control regime to reach regeneration maturity. The mean annual increment of total stem volume was at its highest in the control regime. The highest mean annual increment of merchantable wood was obtained in the regime involving two moderate thinnings, but excluding the most low-productive sites where thinnings did not increase the yield of merchantable wood.https://www.silvafennica.fi/article/407 |
| spellingShingle | Kojola, Soili Penttilä, Timo Laiho, Raija Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland Silva Fennica |
| title | Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland |
| title_full | Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland |
| title_fullStr | Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland |
| title_full_unstemmed | Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland |
| title_short | Impacts of different thinning regimes on the yield of uneven-structured Scots pine stands on drained peatland |
| title_sort | impacts of different thinning regimes on the yield of uneven structured scots pine stands on drained peatland |
| url | https://www.silvafennica.fi/article/407 |
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