Trend in precipitation and evolution of discharge in a climate change context: Wadi mina watershed in Algeria

被引：9
作者：
Hallouz F. [1 ,2 ]
Meddi M. [1 ]
Mahe G. [3 ]
Karahacane H. [1 ,2 ]
Ali Rahmani S.E. [4 ]
机构：
[1] Laboratoire Génie de l’Eau, École Nationale Supérieure d’Hydraulique (ENSH), Blida
[2] Université Djilali Bounaama de Khemis Miliana, Ain Defla
[3] Institut de Recherche pour le Développement (IRD), HydroSciences Montpellier (HSM), Université de Montpellier, Montpellier
[4] Geo-environment Laboratory FSTGAT, Université des Sciences Technologiques Houari Boumediene, Alger
来源：
Revue des Sciences de l'Eau | 2019年 / 32卷 / 02期
关键词：
Algeria; Discharge; Kruskal-Wallis; Mann-Kendall; Rainfall; Temperature; Trend; Wadi Mina;
D O I：
10.7202/1065202ar
中图分类号：
学科分类号：
摘要：
This study focuses on the analysis of the spatial and temporal variability of precipitation, temperature, and discharge indices in the wadi Mina watershed (6 048 km2) in the Algerian northwest during the period of 1979-2013.The application of the non-parametric test of Kruskal-Wallis on rainfall indices has revealed that the total annual rainfall and the maximum number of consecutive rainy days show a large spatial variability. The number of days with high discharge decreases from the north to the south of the basin. As for the Mann-Kendall test, it revealed a decreasing trend in total annual rainfall. On the other hand, the maximal and minimal temperatures significantly increased with time. It was the same for the sequences of consecutive dry days, rainfall intensities and extremely rainy days. Also, the frequency of days with high discharge has decreased, while that with low discharge has increased in the three wadis Mina, Haddad and El Abd. Finally, the decrease in rainfall and the increase in temperature have generated a decline in water resources. © Revue des sciences de l’eau, 2019.
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页码：83 / 114
页数：31
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