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(Article of periodic en Anglais - 2012)

Document title

Hydro-climatic trends in the last 50 years in the lower reach of the Shiyang River Basin, NW China

Authors(s) and Affiliation(s)

WANG H. (1 2) ; ZHANG M. (1) ; ZHU H. (1) ; DANG X. (1) ; YANG Z. (3) ; YIN L. (1) ;
(1) Center of Geological Survey, Xi'an, CHINE
(2) School of Environment Science and Engineering, Chang'an Univ., Xi'an, CHINE
(3) UNSCO-IHE Inst. of Water Education, Delft, PAYS-BAS

Abstract

The hydro-climatic trends were examined for the lower reach of the Shiyang River Basin in NW China using the wavelet analysis and the Mann–Kendall (M–K) test. The results showed that the discharge significantly decreased during the last 5 decades, while there was no noticeable change in precipitation. A 26-year periodicity in discharge was identified by applying the global wavelet spectra and continuous wavelet transform (CWT) method. Because the Shiyang River Basin is located in the cold region of NW China, the contribution of glacier and snow to the discharge is significant. Therefore, the significantly increased temperature during the last 50 years would eventually lead to an increased discharge due to the increased amount of melt water from glacier and snow. However, the increasing water demand for the economic development and oasis expansion in the middle reach of the basin will reduce discharge flowing into the lower reach of the basin

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 95 [pp. 33-41]

Bibliographic references : 30 ref.

Collation : 8 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.03.003

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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