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Assessment of spatial and seasonal water quality variation of Oum Er Rbia River(Morocco)using multivariate statistical techniques

查看全文 作　　者：Ahmed [1]Barakat;Mohamed El [1]Baghdadi;Jamila [1]Rais;Brahim [2]Aghezzaf;Mohamed [2]Slassi 高影响力作者 机构地区：[1]Georessources and Environment Laboratory,Sultan My Slimane University,Béni-Mellal 23000,Morocco;[2]Hydraulic Basin Agency of Oum Er Rbia(ABHOER),Béni-Mellal 23000,Morocco高影响力机构 出　　处：《International Soil and Water Conservation Research》索引2016年第4卷第4期,共9页高影响力期刊 摘　　要：The aim of this study is to assess the spatial and temporal water quality variation and to determine the main contamination sources in the Oum Er Rbia River and its main tributary,El Abid River.The water quality data were collected during 2000-2012 from fourteen sampling stations distributed along the river.The water quality indicators used were TEMP,pH,EC,turbidity,TSS,DO,NH_(4)^(+),NH_(3)^(-),TP,BOD5,COD and F.coli.The water quality data was analyzed using multivariate statistical methods including Pearson's correlation,PCA,and CA.The results showed that in some stations the water quality parameters were over Moroccan water standards.PCA applied to compare the compositional patterns among the analyzed water samples,identified and four factors accounting for almost 63% of the total variation in the data.This suggests that the variations in water compounds’concentration are mainly related to point source contamination(domestic and industrial wastewater),non-point source contamination(agriculture activities),as well as natural processes(weathering of soil and rock).CA showed relatively spatial and seasonal changes in surface water quality,which are usually indicators of contamination with rainfalls or other sources.Overall,this study showed that the water was potentially hazardous to health of the consumers and highlighted the need to treat industrial and municipal wastewater and to encourage sustainable agricultural practices to prevent adverse health effects.We therefore suggest wise management of anthropogenic activities in the catchment of Oum Er Bia River and their tributaries. 关 键 词：Oum Er Rbia basin Temporal/spatial assessment Water quality Multivariate statistics
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