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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Paläobotanische Archive : Jungquartäre und holozäne Klimaentwicklung in chinesischen Trockengebieten

Archives paléo-botaniques : l'évolution climatique au quaternaire récent et à l'Holocène dans les zones arides chinoises

Paläo-Klimaforschung

Recherche sur les paléo-climats

Auteurs :
TARASOV, P.
WAGNER, M.
JIN, G.

Description :
Pollen analysis as a technique for reconstructing former vegetation by means of fossil pollen grains preserved in the sediments was ´born´ in 1916, when Swedish geologist Lennart von Post (1884-1951) presented the first percentage pollen diagram at the meeting of the Swedish Geological Society, held in Kristiana (now Oslo). A combination of the following unique features makes pollen analysis such a useful tool for palaeoenvironmental studies: (a) plants produce pollen in great quantities; (b) pollen grains are easily dispersed by wind, water or insects and occur in almost all types of sediments on all continents except Antarctica; (c) the outer coat of pollen grain build of the biopolymer sporopollenin is extremely resistant to mechanical and chemical agents and well preserved even in very old sediments; (d) a great quantity of pollen grains representing past vegetation which grew around the sampling site can be easily recovered from fossil sediments; (e) most of the pollen grains recovered from Quaternary deposits can be identified to the species, family level and the resulting pollen assemblage allows statistical treatment. - (IfL)


Type de document :
Article de monographie

Source :
Geographische Rundschau, issn : 0016-7460, 2007, vol. 59, n°. 4, p. 12-20, nombre de pages : 9, Références bibliographiques : 19 ref.

Date :
2007

Editeur :
Pays édition : Allemagne, Braunschweig, Westermann

Langue :
Allemand
Droits :
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