Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä
Coarse woody debris (CWD) is an important structural element in boreal forests affecting various ecological processes and maintaining biodiversity. Numerous species are dependent on spatiotemporal availability of CWD and its diverse characteristics. Forest management has drastically reduced the amou...
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Helsingfors universitet
2007
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Online Access: | http://hdl.handle.net/10138/18939 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/18939 2023-08-20T04:07:41+02:00 Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä Coarse woody debris as an element of diversity and naturalness in old-growth spruce forest stands of southern Finland and the Karelian Isthmus Luomi, Annukka Helsingin yliopisto, Bio- ja ympäristötieteellinen tiedekunta, Bio- ja ympäristötieteiden laitos University of Helsinki, Faculty of Biological and Environmental Sciences, Department of Biological and Environmental Sciences Helsingfors universitet, Bio- och miljövetenskapliga fakulteten, Institutionen för bio- och miljövetenskaper 2007 application/pdf http://hdl.handle.net/10138/18939 fin fin Helsingfors universitet University of Helsinki Helsingin yliopisto URN:NBN:fi-fe200712201551 http://hdl.handle.net/10138/18939 Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. Environmental Protection Science Ympäristönsuojelutiede Miljövårdsvetenskap pro gradu-avhandlingar pro gradu -tutkielmat master's thesis 2007 ftunivhelsihelda 2023-07-28T06:11:35Z Coarse woody debris (CWD) is an important structural element in boreal forests affecting various ecological processes and maintaining biodiversity. Numerous species are dependent on spatiotemporal availability of CWD and its diverse characteristics. Forest management has drastically reduced the amount of CWD, thus impoverishing the structural diversity and threatening several species in the boreal forest ecosystems. The aim of this study was to assess the diversity and naturalness of old-growth spruce forest stands in southern Finland and the Karelian Isthmus based on the amount and quality of CWD. Prior to the Second World War forests in both regions were managed similarly. However, after the war the Karelian Isthmus became part of the Soviet Union (and later on Russia), and extensive economic utilization declined. Instead, efficient forest management practices were introduced in Finland after the war. Because southern Finland and the Karelian Isthmus belong to the same biogeographical region, the regional differences in the stand structure of the old-growth forests are mainly due to the differences in their land-use history. Ten old-growth spruce forest stands were studied both in southern Finland and the Karelian Isthmus. The Finnish stands were on areas that belong to Natura 2000 Network of the European Union. The Karelian stands were not protected, but five of them were on a planned protection area. Five 10 x 10 m plots were systematically established on a 9-ha square area in each forest stand. All CWD inside the plot and at minimum 10 cm in diameter was recorded. The length and the diameter at both ends or at breast height were measured. Also the position, decay class and tree species of each piece were noted. The amount and quality of CWD varied widely within and between the forest stands, and there were only few clear differences at the regional level. The average volume of CWD was 105,8 m3/ha (19,6-224,4 m3/ha) in southern Finland and 85,4 m3/ha (13,6-144,6 m3/ha) in the Karelian Isthmus. In southern ... Master Thesis karelia* karelia* karelian Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
institution |
Open Polar |
collection |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
op_collection_id |
ftunivhelsihelda |
language |
Finnish |
topic |
Environmental Protection Science Ympäristönsuojelutiede Miljövårdsvetenskap |
spellingShingle |
Environmental Protection Science Ympäristönsuojelutiede Miljövårdsvetenskap Luomi, Annukka Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
topic_facet |
Environmental Protection Science Ympäristönsuojelutiede Miljövårdsvetenskap |
description |
Coarse woody debris (CWD) is an important structural element in boreal forests affecting various ecological processes and maintaining biodiversity. Numerous species are dependent on spatiotemporal availability of CWD and its diverse characteristics. Forest management has drastically reduced the amount of CWD, thus impoverishing the structural diversity and threatening several species in the boreal forest ecosystems. The aim of this study was to assess the diversity and naturalness of old-growth spruce forest stands in southern Finland and the Karelian Isthmus based on the amount and quality of CWD. Prior to the Second World War forests in both regions were managed similarly. However, after the war the Karelian Isthmus became part of the Soviet Union (and later on Russia), and extensive economic utilization declined. Instead, efficient forest management practices were introduced in Finland after the war. Because southern Finland and the Karelian Isthmus belong to the same biogeographical region, the regional differences in the stand structure of the old-growth forests are mainly due to the differences in their land-use history. Ten old-growth spruce forest stands were studied both in southern Finland and the Karelian Isthmus. The Finnish stands were on areas that belong to Natura 2000 Network of the European Union. The Karelian stands were not protected, but five of them were on a planned protection area. Five 10 x 10 m plots were systematically established on a 9-ha square area in each forest stand. All CWD inside the plot and at minimum 10 cm in diameter was recorded. The length and the diameter at both ends or at breast height were measured. Also the position, decay class and tree species of each piece were noted. The amount and quality of CWD varied widely within and between the forest stands, and there were only few clear differences at the regional level. The average volume of CWD was 105,8 m3/ha (19,6-224,4 m3/ha) in southern Finland and 85,4 m3/ha (13,6-144,6 m3/ha) in the Karelian Isthmus. In southern ... |
author2 |
Helsingin yliopisto, Bio- ja ympäristötieteellinen tiedekunta, Bio- ja ympäristötieteiden laitos University of Helsinki, Faculty of Biological and Environmental Sciences, Department of Biological and Environmental Sciences Helsingfors universitet, Bio- och miljövetenskapliga fakulteten, Institutionen för bio- och miljövetenskaper |
format |
Master Thesis |
author |
Luomi, Annukka |
author_facet |
Luomi, Annukka |
author_sort |
Luomi, Annukka |
title |
Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
title_short |
Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
title_full |
Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
title_fullStr |
Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
title_full_unstemmed |
Lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä Etelä-Suomen ja Karjalankannaksen vanhoissa kuusimetsiköissä |
title_sort |
lahopuusto monimuotoisuuden ja luonnontilaisuuden osatekijänä etelä-suomen ja karjalankannaksen vanhoissa kuusimetsiköissä |
publisher |
Helsingfors universitet |
publishDate |
2007 |
url |
http://hdl.handle.net/10138/18939 |
genre |
karelia* karelia* karelian |
genre_facet |
karelia* karelia* karelian |
op_relation |
URN:NBN:fi-fe200712201551 http://hdl.handle.net/10138/18939 |
op_rights |
Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. |
_version_ |
1774719500553289728 |