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Characterizing and explaining spatio-temporal variation of water quality in a highly disturbed river by multi-statistical techniques
Liu,Jianfeng1,2; Zhang,Xiang1,2; Xia,Jun1,2; Wu,Shaofei1,2; She,Dunxian1,2; Zou,Lei1,2
2016-07-26
Source PublicationSpringerPlus
ISSN2193-1801
Volume5Issue:1
Corresponding AuthorZhang,Xiang(zhangxiang@whu.edu.cn)
AbstractAbstract Assessing the spatio-temporal variations of surface water quality is important for water environment management. In this study, surface water samples are collected from 2008 to 2015 at 17 stations in the Ying River basin in China. The two pollutants i.e. chemical oxygen demand (COD) and ammonia nitrogen (NH3-N) are analyzed to characterize the river water quality. Cluster analysis and the seasonal Kendall test are used to detect the seasonal and inter-annual variations in the dataset, while the Moran’s index is utilized to understand the spatial autocorrelation of the variables. The influence of natural factors such as hydrological regime, water temperature and etc., and anthropogenic activities with respect to land use and pollutant load are considered as driving factors to understand the water quality evolution. The results of cluster analysis present three groups according to the similarity in seasonal pattern of water quality. The trend analysis indicates an improvement in water quality during the dry seasons at most of the stations. Further, the spatial autocorrelation of water quality shows great difference between the dry and wet seasons due to sluices and dams regulation and local nonpoint source pollution. The seasonal variation in water quality is found associated with the climatic factors (hydrological and biochemical processes) and flow regulation. The analysis of land use indicates a good explanation for spatial distribution and seasonality of COD at the sub-catchment scale. Our results suggest that an integrated water quality measures including city sewage treatment, agricultural diffuse pollution control as well as joint scientific operations of river projects is needed for an effective water quality management in the Ying River basin.
KeywordWater quality Trend Spatial autocorrelation Climate variables Land use Water quality management
DOI10.1186/s40064-016-2815-z
Language英语
WOS IDBMC:10.1186/s40064-016-2815-z
PublisherSpringer International Publishing
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/67817
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang,Xiang
Affiliation1.Wuhan University; State Key Laboratory of Water Resources and Hydropower Engineering Science
2.Wuhan University; Hubei Provincial Collaborative Innovation Center for Water Resources Security
Recommended Citation
GB/T 7714
Liu,Jianfeng,Zhang,Xiang,Xia,Jun,et al. Characterizing and explaining spatio-temporal variation of water quality in a highly disturbed river by multi-statistical techniques[J]. SpringerPlus,2016,5(1).
APA Liu,Jianfeng,Zhang,Xiang,Xia,Jun,Wu,Shaofei,She,Dunxian,&Zou,Lei.(2016).Characterizing and explaining spatio-temporal variation of water quality in a highly disturbed river by multi-statistical techniques.SpringerPlus,5(1).
MLA Liu,Jianfeng,et al."Characterizing and explaining spatio-temporal variation of water quality in a highly disturbed river by multi-statistical techniques".SpringerPlus 5.1(2016).
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