Summary We estimated the date of onset (Dateest) of cambial activity by the pinning method in Scots pine (Pinus sylvestris L.) trees at Vanttauskoski (Site 1) and Laanila (Site 2) near the latitudinal limit of Scots pine in northern Finland. In each year and at each site, observations were made on a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.625.4215 2023-05-15T17:42:48+02:00 The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.4215 http://treephys.oxfordjournals.org/content/28/1/105.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.4215 http://treephys.oxfordjournals.org/content/28/1/105.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://treephys.oxfordjournals.org/content/28/1/105.full.pdf boreal forest degree days Pinus sylvestris wood text ftciteseerx 2016-01-08T15:11:55Z Summary We estimated the date of onset (Dateest) of cambial activity by the pinning method in Scots pine (Pinus sylvestris L.) trees at Vanttauskoski (Site 1) and Laanila (Site 2) near the latitudinal limit of Scots pine in northern Finland. In each year and at each site, observations were made on a differ-ent set of five trees. The estimated dates of onset of cambial activity were compared with the corresponding heat sums, cal-culated in degree-days according to two models. Within years, Dateest varied among trees by up to 15 days at Site 1 and up to 13 days at Site 2. Among years, mean Dateest varied by 15.3 days at Site 1 and 12.0 days at Site 2. The overall mean Dateest differed between sites by 6 days (June 5 at Site 1 and June 11 at Site 2). Among all trees in all years, the mean number of degree days (d.d.) calculated from mean daily temperature above a thresh-old of 5 °C before Dateest ranged from 68.7 to 135 d.d. at Site 1 and from 37.4 to 154.7 d.d. at Site 2. Among years, the mean heat sum before Dateest ranged from 94 to 112.5 d.d. at Site 1 and from 61.4 to 136 d.d. at Site 2. Variation among years in heat sum before Dateest at Site 2 was highly significant, indicat-ing that one or more factors other than, or in addition to, heat sum determines the onset of cambial activity in Scots pine. Similar results were obtained when heat sum was computed from the area between the sine wave generated by daily maxi-mum and minimum temperature and the threshold tempera-ture. Text Northern Finland Unknown Laanila ENVELOPE(27.400,27.400,68.400,68.400) Vanttauskoski ENVELOPE(26.750,26.750,66.383,66.383) |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
boreal forest degree days Pinus sylvestris wood |
spellingShingle |
boreal forest degree days Pinus sylvestris wood |
topic_facet |
boreal forest degree days Pinus sylvestris wood |
description |
Summary We estimated the date of onset (Dateest) of cambial activity by the pinning method in Scots pine (Pinus sylvestris L.) trees at Vanttauskoski (Site 1) and Laanila (Site 2) near the latitudinal limit of Scots pine in northern Finland. In each year and at each site, observations were made on a differ-ent set of five trees. The estimated dates of onset of cambial activity were compared with the corresponding heat sums, cal-culated in degree-days according to two models. Within years, Dateest varied among trees by up to 15 days at Site 1 and up to 13 days at Site 2. Among years, mean Dateest varied by 15.3 days at Site 1 and 12.0 days at Site 2. The overall mean Dateest differed between sites by 6 days (June 5 at Site 1 and June 11 at Site 2). Among all trees in all years, the mean number of degree days (d.d.) calculated from mean daily temperature above a thresh-old of 5 °C before Dateest ranged from 68.7 to 135 d.d. at Site 1 and from 37.4 to 154.7 d.d. at Site 2. Among years, the mean heat sum before Dateest ranged from 94 to 112.5 d.d. at Site 1 and from 61.4 to 136 d.d. at Site 2. Variation among years in heat sum before Dateest at Site 2 was highly significant, indicat-ing that one or more factors other than, or in addition to, heat sum determines the onset of cambial activity in Scots pine. Similar results were obtained when heat sum was computed from the area between the sine wave generated by daily maxi-mum and minimum temperature and the threshold tempera-ture. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.4215 http://treephys.oxfordjournals.org/content/28/1/105.full.pdf |
long_lat |
ENVELOPE(27.400,27.400,68.400,68.400) ENVELOPE(26.750,26.750,66.383,66.383) |
geographic |
Laanila Vanttauskoski |
geographic_facet |
Laanila Vanttauskoski |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
http://treephys.oxfordjournals.org/content/28/1/105.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.4215 http://treephys.oxfordjournals.org/content/28/1/105.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766144711793311744 |