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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Deposition of sandstorms in a vegetation-covered sand dune in Ejin Oasis and its characteristics

Auteurs :
WEN, X.
LI, B.
WANG, W.
LI, S.
OU, X.
ZHENG, Y.

Description :
In this study, 263 samples were taken from the section for grain-size analysis, 25 for chemical analysis, ii for C 14 dating and 6 for scanning electron microscope (SEM). The results indicate that 3 types of the sediments in the section can be identified. The Ejin Section has recorded the repeated dust-storms or sandstorms since 2500 yr BP and these peak periods are consistent with the records of dust rains in historical literatures, indicating that the change of climate is a key factor to increase sandstorms or dust-storms, whreas, artificial factor may only be an accelerating one for desertification.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2006, vol. 16, n°. 4, p. 502-508, nombre de pages : 7, Collation : Illustration, Références bibliographiques : 28 ref.

Date :
2006

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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