Tree ring research on conifers in the Alps
Dendroecology, dendroclimatology and climatic studies

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Rolland C., Schueller J. (1995). Croissance comparée du Pin à crochets et de l'Epicéa (Pinus uncinata Ram. et Picea abies Karst.) sur dalle calcaire karstifiée en moyenne montagne tempérée (Vercors, France). Revue de Géographie Alpine, 83, 1 , 17-32.
  • TITLE A comparison of mountain pine and Norway spruce growth (Pinus uncinata Ram. and Picea abies Karst.) on a karstified calcareous flag in a temperate, mid-altitude mountain area (Vercors, France).
  • LANGUAGE French with English summary
  • SUBJECT Ecology, Tree growth
  • SPECIES Pinus uncinata Ram., Picea abies (L.) Karst.
  • SITES Corrençon, Vercors, South-East of France, Alps.

  • The dendroecological method was used to compare the growth and response to climate of the mountain pine and Norway spruce in particular soil conditions. The trees are found growing on urgonian calcareous soil (lapiaz), between 1300 and 1400 meters in the Vercors mountains, France. Ring-width analysis reveals that the mean radial growth of the mountain pine is faster than that of the spruce, the maximum increase observed being 2.0 mm/year for pine and 1.2 mm/year for spruce. The sensitivity to climate is high in both cases, but spruce exhibits a longer delay in its response to climate. Mountain pine growth is better with high rainfall in July of the previous year (n-1), while high temperatures during July (n-1) and May (n) affect both species, increasing their transpiration.
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