Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots
We studied the dynamics of stand structure on drained peatland sites in Scots pine dominated stands untreated with thinnings. The data consisted of consecutive stand measurements in 10 permanent sample plots where the monitoring periods varied from 29 to 66 years. We assumed that the standâs structu...
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ftdoajarticles:oai:doaj.org/article:98698aa41f3a4ae6a17482f7b16cc17f 2023-05-15T17:42:35+02:00 Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots Sarkkola, Sakari Hökkä, Hannu Penttilä, Timo 2004-01-01T00:00:00Z https://doi.org/10.14214/sf.408 https://doaj.org/article/98698aa41f3a4ae6a17482f7b16cc17f EN eng Finnish Society of Forest Science https://www.silvafennica.fi/article/408 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.408 https://doaj.org/article/98698aa41f3a4ae6a17482f7b16cc17f Silva Fennica, Vol 38, Iss 4 (2004) Forestry SD1-669.5 article 2004 ftdoajarticles https://doi.org/10.14214/sf.408 2022-12-31T08:30:12Z We studied the dynamics of stand structure on drained peatland sites in Scots pine dominated stands untreated with thinnings. The data consisted of consecutive stand measurements in 10 permanent sample plots where the monitoring periods varied from 29 to 66 years. We assumed that the standâs structural development was driven by the natural processes of regeneration, growth, and mortality, all related to inter-tree competition within the stand. The DBH distributions of live and dead trees at different times of post-drainage stand development â smoothed by Weibull function â were analysed to characterise the change in stand structure. The initial uneven-sized structure of the natural, widely-spaced stands became more uneven during the first decades following drainage due to enhanced regeneration. Later, as stand density and mean tree size continuously increased, the DBH distributions approached bell-shaped distributions. Accordingly, the suppressed trees showed their highest mortality rate during the first decades, but the peak of the mortality distribution shifted to larger trees along stand succession. The change in structure was faster in southern Finland than in northern Finland. We assumed the changes in stand dynamics reflected increased inter-tree competition, initiated by enhanced site productivity and increased stand stocking resulting from the ditching operation. Article in Journal/Newspaper Northern Finland Directory of Open Access Journals: DOAJ Articles Silva Fennica 38 4 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Forestry SD1-669.5 |
spellingShingle |
Forestry SD1-669.5 Sarkkola, Sakari Hökkä, Hannu Penttilä, Timo Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
topic_facet |
Forestry SD1-669.5 |
description |
We studied the dynamics of stand structure on drained peatland sites in Scots pine dominated stands untreated with thinnings. The data consisted of consecutive stand measurements in 10 permanent sample plots where the monitoring periods varied from 29 to 66 years. We assumed that the standâs structural development was driven by the natural processes of regeneration, growth, and mortality, all related to inter-tree competition within the stand. The DBH distributions of live and dead trees at different times of post-drainage stand development â smoothed by Weibull function â were analysed to characterise the change in stand structure. The initial uneven-sized structure of the natural, widely-spaced stands became more uneven during the first decades following drainage due to enhanced regeneration. Later, as stand density and mean tree size continuously increased, the DBH distributions approached bell-shaped distributions. Accordingly, the suppressed trees showed their highest mortality rate during the first decades, but the peak of the mortality distribution shifted to larger trees along stand succession. The change in structure was faster in southern Finland than in northern Finland. We assumed the changes in stand dynamics reflected increased inter-tree competition, initiated by enhanced site productivity and increased stand stocking resulting from the ditching operation. |
format |
Article in Journal/Newspaper |
author |
Sarkkola, Sakari Hökkä, Hannu Penttilä, Timo |
author_facet |
Sarkkola, Sakari Hökkä, Hannu Penttilä, Timo |
author_sort |
Sarkkola, Sakari |
title |
Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
title_short |
Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
title_full |
Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
title_fullStr |
Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
title_full_unstemmed |
Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots |
title_sort |
natural development of stand structure in peatland scots pine following drainage: results based on long-term monitoring of permanent sample plots |
publisher |
Finnish Society of Forest Science |
publishDate |
2004 |
url |
https://doi.org/10.14214/sf.408 https://doaj.org/article/98698aa41f3a4ae6a17482f7b16cc17f |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Silva Fennica, Vol 38, Iss 4 (2004) |
op_relation |
https://www.silvafennica.fi/article/408 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.408 https://doaj.org/article/98698aa41f3a4ae6a17482f7b16cc17f |
op_doi |
https://doi.org/10.14214/sf.408 |
container_title |
Silva Fennica |
container_volume |
38 |
container_issue |
4 |
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1766144475299577856 |