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
Carole Desplanque, C. Rolland, Fritz Hans Schweingruber
The influence of biotic (tree species) and abiotic factors (regional climate,
altitude and stand aspect) on extreme tree-ring widths is dendroecologically
investigated. Negative pointer years are observed when abrupt radial growth
reductions (exceeding 40%) occurred synchronously in a given tree population.
Pointer year intensity is expected to follow several theoretical models when
trees are sam... hiện toàn bộ