Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden
By means of results from provenance trials in northern Sweden, a map of severity index for various latitudes and altitudes was drawn up. The severity index is defined as the expected percentage plant mortality rate in the local population during the first 20 years after establishment of the plantati...
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ftslunivuppsala:oai:pub.epsilon.slu.se:5442 2023-05-15T17:44:20+02:00 Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden Eriksson, Gösta Andersson, Sven Eiche, Vilhelms Ifver, Jan Persson, Anders 1980 application/pdf https://pub.epsilon.slu.se/5442/ https://pub.epsilon.slu.se/5442/1/SFS156.pdf swe eng swe eng https://pub.epsilon.slu.se/5442/1/SFS156.pdf Eriksson, Gösta and Andersson, Sven and Eiche, Vilhelms and Ifver, Jan and Persson, Anders (1980). Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden. Uppsala: UNSPECIFIED, Sveriges lantbruksuniversitet. Studia forestalia Suecica 156 [Report] Product science Forestry Report NonPeerReviewed info:eu-repo/semantics/report 1980 ftslunivuppsala 2022-01-09T19:11:56Z By means of results from provenance trials in northern Sweden, a map of severity index for various latitudes and altitudes was drawn up. The severity index is defined as the expected percentage plant mortality rate in the local population during the first 20 years after establishment of the plantation. By combining transfer effects based on data from all trials, a general trend of the transfer effect was calculated. The regression obtained showed that, at constant altitude, each degree of transfer southwards meant an increase in survival of 10.8 percentage units; at constant latitude, every 100 metres of downward transfer implied an increase in survival of 3.0 percentage units. By means of a graph combining severity index with transfer effects, it is shown how optimum transfer can be estimated. Optimum transfer is defined as the transfer giving maximum volume yield, which equals 70-80 per cent survival. Report Northern Sweden Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
Swedish English |
topic |
Product science Forestry |
spellingShingle |
Product science Forestry Eriksson, Gösta Andersson, Sven Eiche, Vilhelms Ifver, Jan Persson, Anders Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
topic_facet |
Product science Forestry |
description |
By means of results from provenance trials in northern Sweden, a map of severity index for various latitudes and altitudes was drawn up. The severity index is defined as the expected percentage plant mortality rate in the local population during the first 20 years after establishment of the plantation. By combining transfer effects based on data from all trials, a general trend of the transfer effect was calculated. The regression obtained showed that, at constant altitude, each degree of transfer southwards meant an increase in survival of 10.8 percentage units; at constant latitude, every 100 metres of downward transfer implied an increase in survival of 3.0 percentage units. By means of a graph combining severity index with transfer effects, it is shown how optimum transfer can be estimated. Optimum transfer is defined as the transfer giving maximum volume yield, which equals 70-80 per cent survival. |
format |
Report |
author |
Eriksson, Gösta Andersson, Sven Eiche, Vilhelms Ifver, Jan Persson, Anders |
author_facet |
Eriksson, Gösta Andersson, Sven Eiche, Vilhelms Ifver, Jan Persson, Anders |
author_sort |
Eriksson, Gösta |
title |
Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
title_short |
Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
title_full |
Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
title_fullStr |
Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
title_full_unstemmed |
Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden |
title_sort |
severity index and transfer effects on survival and volume production of pinus sylvestris in northern sweden |
publishDate |
1980 |
url |
https://pub.epsilon.slu.se/5442/ https://pub.epsilon.slu.se/5442/1/SFS156.pdf |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
https://pub.epsilon.slu.se/5442/1/SFS156.pdf Eriksson, Gösta and Andersson, Sven and Eiche, Vilhelms and Ifver, Jan and Persson, Anders (1980). Severity index and transfer effects on survival and volume production of Pinus sylvestris in northern Sweden. Uppsala: UNSPECIFIED, Sveriges lantbruksuniversitet. Studia forestalia Suecica 156 [Report] |
_version_ |
1766146548896366592 |