TAILIEUCHUNG - Báo cáo lâm nghiệp: " Dendrochronological insights JR Pilcher into past oak growth"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế, đề tài:" Dendrochronological insights JR Pilcher into past oak growth. | 663 Ann Sci For 1996 53 663-670 Elsevier INRA Review article Dendrochronological insights into past oak growth JR Pilcher Palaeoecology Centre Queens University of Belfast Belfast Northern Ireland UK Received 31 October 1994 accepted 31 October 1995 Summary European tree-ring research on deciduous oak species has been developed in most centres for archaeological and historic building dating. Studies of living trees have been carried out to anchor the modern end of long chronologies of historical archaeological and sub-fossil timbers. Chronologies in Ireland England and Germany extend for 7 000-8 000 years from the present. Once the tree-ring chronologies are completed every annual ring in every piece of wood that forms the chronology can be precisely assigned to the year in which it grew. Any environmental information extracted from the timbers is thus exactly dated. This enables US to look at the effects of specific events on oaks in different regions. Information is preserved in the trees on four different time or frequency ranges. dendrochronology deciduous oak Europe I Ireland I France Resume Aperẹu de la croissance passée des chênes sur la base d analyses dendrochro-nologiques. L analyse dendrochronologique des chênes européens a été développée dans beau-coup de cas pour permettre la datation de monuments archéologiques OU historiques. Des etudes sur des arbres vivants ont été menées pour definir 1 extrémité actuelle de series chronologiques longues obtenues sur des bois de la période historique préhistorique voire sub-fossile. Les series chro-nologiques obtenues en Irlande en Allemagne et en Angleterre s etendent sur une période de 7 000 à 8 000 ans. Une fois ces series chronologiques bien établies il est possible de préciser pour chaque cerne annuel de n importe quel fragment de bois I annee de sa formation. Les informations surl envi-ronnement pouvant être déduites de ces bois sont ainsi datées avec beaucoup de precision. Cela nous permet d observer les .

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