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