Temperature control over root growth and root biomass in taiga forest trees
Root elongation of greenhouse-grown Alaskan taiga tree seedlings increased with increasing root temperature in all six species examined and was most temperature sensitive in warm-adapted aspen (Populustremuloides Michx.). Root elongation was slower in fine than large roots and in black spruce (Picea...
Published in: | Canadian Journal of Forest Research |
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Online Access: | http://dx.doi.org/10.1139/x83-112 http://www.nrcresearchpress.com/doi/pdf/10.1139/x83-112 |
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crcansciencepubl:10.1139/x83-112 2024-09-09T20:11:16+00:00 Temperature control over root growth and root biomass in taiga forest trees Tryon, Peter R. Chapin III, F. Stuart 1983 http://dx.doi.org/10.1139/x83-112 http://www.nrcresearchpress.com/doi/pdf/10.1139/x83-112 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 13, issue 5, page 827-833 ISSN 0045-5067 1208-6037 journal-article 1983 crcansciencepubl https://doi.org/10.1139/x83-112 2024-08-15T04:09:29Z Root elongation of greenhouse-grown Alaskan taiga tree seedlings increased with increasing root temperature in all six species examined and was most temperature sensitive in warm-adapted aspen (Populustremuloides Michx.). Root elongation was slower in fine than large roots and in black spruce (Piceamariana (Mill.) B.S.P.) was less temperature sensitive in fine than in large roots. Root elongation in the laboratory was slowest in black spruce, which has an inherently slow growth rate, and most rapid in poplar (Populusbalsamifera L.) and aspen, which grow more rapidly. In contrast, field root elongation rates tended to be highest in black spruce from cold wet sites, suggesting that site factors other than soil temperature (e.g., moisture) predominated over genetic differences among species in determining field root elongation rates. The seasonal pattern of root elongation was closely correlated with soil temperature and reached maximum rates in July for all tree species (except aspen medium-sized roots). Most roots of each species were in the top 20 cm of soil. However, root growth penetrated to greater depth in warm compared with cold sites. Root biomass in a 130-year black spruce forest (1230 g/m 2 ) comprised only 15% of total tree biomass. Root biomass of 25-year aspen and 60-year poplar sites (517 and 5385 g/m 2 , respectively) comprised a greater proportion (57% in poplar) of total tree biomass than in spruce. Article in Journal/Newspaper taiga Canadian Science Publishing Canadian Journal of Forest Research 13 5 827 833 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Root elongation of greenhouse-grown Alaskan taiga tree seedlings increased with increasing root temperature in all six species examined and was most temperature sensitive in warm-adapted aspen (Populustremuloides Michx.). Root elongation was slower in fine than large roots and in black spruce (Piceamariana (Mill.) B.S.P.) was less temperature sensitive in fine than in large roots. Root elongation in the laboratory was slowest in black spruce, which has an inherently slow growth rate, and most rapid in poplar (Populusbalsamifera L.) and aspen, which grow more rapidly. In contrast, field root elongation rates tended to be highest in black spruce from cold wet sites, suggesting that site factors other than soil temperature (e.g., moisture) predominated over genetic differences among species in determining field root elongation rates. The seasonal pattern of root elongation was closely correlated with soil temperature and reached maximum rates in July for all tree species (except aspen medium-sized roots). Most roots of each species were in the top 20 cm of soil. However, root growth penetrated to greater depth in warm compared with cold sites. Root biomass in a 130-year black spruce forest (1230 g/m 2 ) comprised only 15% of total tree biomass. Root biomass of 25-year aspen and 60-year poplar sites (517 and 5385 g/m 2 , respectively) comprised a greater proportion (57% in poplar) of total tree biomass than in spruce. |
format |
Article in Journal/Newspaper |
author |
Tryon, Peter R. Chapin III, F. Stuart |
spellingShingle |
Tryon, Peter R. Chapin III, F. Stuart Temperature control over root growth and root biomass in taiga forest trees |
author_facet |
Tryon, Peter R. Chapin III, F. Stuart |
author_sort |
Tryon, Peter R. |
title |
Temperature control over root growth and root biomass in taiga forest trees |
title_short |
Temperature control over root growth and root biomass in taiga forest trees |
title_full |
Temperature control over root growth and root biomass in taiga forest trees |
title_fullStr |
Temperature control over root growth and root biomass in taiga forest trees |
title_full_unstemmed |
Temperature control over root growth and root biomass in taiga forest trees |
title_sort |
temperature control over root growth and root biomass in taiga forest trees |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/x83-112 http://www.nrcresearchpress.com/doi/pdf/10.1139/x83-112 |
genre |
taiga |
genre_facet |
taiga |
op_source |
Canadian Journal of Forest Research volume 13, issue 5, page 827-833 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x83-112 |
container_title |
Canadian Journal of Forest Research |
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13 |
container_issue |
5 |
container_start_page |
827 |
op_container_end_page |
833 |
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1809945795857743872 |