Tree-ring samples of Picea schrenkiana (Fisch. et Mey) were studied along an
altitudinal gradient in the central Tianshan Mountains, and ring-width
chronologies were developed for three sites at different altitudes: low-forest
border (1600–1700 m a.s.l.), interior forest (2100–2200 m a.s.l.), and upper
treeline (2600–2700 m a.s.l.). Annual ring-width variations were similar among
the three sites b... hiện toàn bộ
Tapani Repo, Gang Zhang, Aija Ryyppö, Risto Rikala, Martti Vuorinen
The cessation of shoot elongation, diameter growth and needle elongation were
compared with the initiation of frost hardening of the stems and needles in an
8-year-old provenance trial of Scots pine (Pinus sylvestris L.) established in
central Finland. The saplings were of six different origins ranging from Estonia
to northern Finland, forming a latitudinal gradient of ca. 10°N. The frost
hardines... hiện toàn bộ