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(Article of periodic en Anglais - 2012)

Document title

Temporal and spatial changes of agricultural water requirements in the Lancang River Basin

Authors(s) and Affiliation(s)

GU S. (1 2) ; HE D. (3) ; CUI Y. (1) ; LI Y. (4) ;
(1) State Key Lab. of Water Resources and Hydropower Engineering Science, Univ., Wuhan, CHINE
(2) Yunnan Inst. for Investigation, Design and Research of Water Resources & Hydropower Engineering, Kunming, CHINE
(3) Asian International Rivers Center, Yunnan University, Kunming, CHINE
(4) Dep. of Irrigation, Drainage and Rural Water Supply, MWR, Beijing, CHINE

Abstract

Based on the data of 8 meteorological stations from the 1950s to 2007, current cropping patterns, field water moisture management, the AA. use the Mann-Kendall and the Rescaled Range Analysis methods to research the changes of humidity and crop irrigation water requirements in the Lancang River Basin. The results show that the annual and dry season average temperatures significantly increased, and the dry season rainfall increased while wet season rainfall decreased. The turning points of weather factors, evapotranspiration (ET0), the aridity-humidity index, paddy irrigation requirements and total agricultural water requirements occurred from the 1960s to the 1990s. The spatial changing tendency of paddy irrigation quota increased with the increase of altitude and latitude. The maximum value is observed in Weixi, while the minimum in Mengla

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2012, vol. 22, no3 [pp. 441-450]

Bibliographic references : 21 ref.

Collation : 2 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-012-0938-x

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