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
- LANGUAGE French with English summary
- SUBJECT Ecology, Tree growth
- KEY WORDS
- SPECIES Pinus uncinata Ram., Picea
abies (L.) Karst.
- SITES Corrençon, Vercors, South-East of
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.