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Record #112553:

Ground frost restriction of subarctic Picea abies forest in northern Sweden, a dendrochronological analysis / Leif Kullman.

Title: Ground frost restriction of subarctic Picea abies forest in northern Sweden, a dendrochronological analysis / Leif Kullman.
Author(s): Kullman, Leif.
Date: 1991.
In: Geografiska Annaler. Series A. Physical Geography. (1991.), Vol. 73A(3-4) (1991)
Abstract: Retrospective analysis of tree-ring chronology (1771-1989) and age structure, also recent canopy change and ground temperature were assessed. Tree-ring width correlated best with June mean temperature, when thawing of seasonal frost beneath crowns normally occurs. Hypothetically, steeply declining radial growth since 1950s preconditioned canopy dieback in 1987, triggered by extreme meteorological conditions associated with exceptionally late thawing and evolution of new local permafrost. Evidence points to previous permafrost episodes. Suggests that natural forest history is influenced by historical ground frost variations and that northern range limit of spruce in Sweden is partially controlled by severe ground freezing, late thawing, and edaphic conditions.
Notes:

Geografiska Annaler. Series A. Physical Geography. Vol. 73A(3-4) :167-178 (1991).

Keywords: 634.0 -- Forests and forestry.
634.0.181.65 -- Trees, environmental influence on.
634.0.561.24 -- Dendrochronology.
551.583.3 -- Climatic changes, Quaternary.
58 -- Botany.
581.5 -- Plant behaviour.
551.345 -- Permafrost. Cryopedology.
G -- Botany.
(*57) -- Sweden.
(*571.12) -- Torne lappmark.
SPRI record no.: 112553

MARCXML

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100 1# ‡aKullman, Leif.
245 10 ‡aGround frost restriction of subarctic Picea abies forest in northern Sweden, a dendrochronological analysis /‡cLeif Kullman.
260 ## ‡a[S.l.] :‡b[s.n.],‡c1991.
300 ## ‡ap. 167-178 :‡bill., diags., tables, map.
500 ## ‡aGeografiska Annaler. Series A. Physical Geography. Vol. 73A(3-4) :167-178 (1991).
520 3# ‡aRetrospective analysis of tree-ring chronology (1771-1989) and age structure, also recent canopy change and ground temperature were assessed. Tree-ring width correlated best with June mean temperature, when thawing of seasonal frost beneath crowns normally occurs. Hypothetically, steeply declining radial growth since 1950s preconditioned canopy dieback in 1987, triggered by extreme meteorological conditions associated with exceptionally late thawing and evolution of new local permafrost. Evidence points to previous permafrost episodes. Suggests that natural forest history is influenced by historical ground frost variations and that northern range limit of spruce in Sweden is partially controlled by severe ground freezing, late thawing, and edaphic conditions.
650 07 ‡a634.0 -- Forests and forestry.‡2udc
650 07 ‡a634.0.181.65 -- Trees, environmental influence on.‡2udc
650 07 ‡a634.0.561.24 -- Dendrochronology.‡2udc
650 07 ‡a551.583.3 -- Climatic changes, Quaternary.‡2udc
650 07 ‡a58 -- Botany.‡2udc
650 07 ‡a581.5 -- Plant behaviour.‡2udc
650 07 ‡a551.345 -- Permafrost. Cryopedology.‡2udc
650 07 ‡aG -- Botany.‡2local
651 #7 ‡a(*57) -- Sweden.‡2udc
651 #7 ‡a(*571.12) -- Torne lappmark.‡2udc
773 0# ‡7nnas ‡tGeografiska Annaler. Series A. Physical Geography. ‡gVol. 73A(3-4) (1991) ‡wSPRI-40621
917 ## ‡aUnenhanced record from Muscat, imported 2019
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