Identification of long-term trends and seasonality in high-frequency water quality data from the Yangtze River basin, China

PloS One
Weili DuanGuishan Yang

Abstract

Comprehensive understanding of the long-term trends and seasonality of water quality is important for controlling water pollution. This study focuses on spatio-temporal distributions, long-term trends, and seasonality of water quality in the Yangtze River basin using a combination of the seasonal Mann-Kendall test and time-series decomposition. The used weekly water quality data were from 17 environmental stations for the period January 2004 to December 2015. Results show gradual improvement in water quality during this period in the Yangtze River basin and greater improvement in the Uppermost Yangtze River basin. The larger cities, with high GDP and population density, experienced relatively higher pollution levels due to discharge of industrial and household wastewater. There are higher pollution levels in Xiang and Gan River basins, as indicated by higher NH4-N and CODMn concentrations measured at the stations within these basins. Significant trends in water quality were identified for the 2004-2015 period. Operations of the three Gorges Reservoir (TGR) enhanced pH fluctuations and possibly attenuated CODMn, and NH4-N transportation. Finally, seasonal cycles of varying strength were detected for time-series of pollutants in ...Continue Reading

References

Jul 1, 2005·Nature·Jianguo Liu, Jared Diamond
Jul 22, 2006·Environmental Science & Technology·Dennis R Helsel, Lonna M Frans
Dec 8, 2007·The Science of the Total Environment·X MorvanM G Kibblewhite
Jun 17, 2008·The Science of the Total Environment·Beat MüllerAugust Pfluger
May 19, 2009·Journal of Hazardous Materials·Bing WuShupei Cheng
Jul 2, 2010·Journal of Hazardous Materials·Xiao-jian ZhangEdward A Laws
Aug 16, 2011·Journal of Environmental Monitoring : JEM·Pingping LuoYosuke Yamashiki
Nov 29, 2011·The Science of the Total Environment·Sarah J HallidayDave Norris
Mar 22, 2012·Environmental Science & Technology·Marta VenierRonald A Hites
Jul 12, 2013·Environmental Science and Pollution Research International·H Hollert
Jun 30, 2016·Environmental Monitoring and Assessment·Yinhuan QiaoLin Zhu

❮ Previous
Next ❯

Citations

May 17, 2019·Environmental Science and Pollution Research International·Lei LiHui Wu
Jul 13, 2019·Sensors·David Gillett, Alan Marchiori
Jun 16, 2018·International Journal of Environmental Research and Public Health·Weiwei SongDahao Song
Jun 21, 2019·International Journal of Environmental Research and Public Health·Xinqi HuHuijian Shi
Jan 13, 2021·The Science of the Total Environment·Rong XiangBinghui Zheng
May 13, 2020·The Science of the Total Environment·Frédérique EyrolleRodolfo Gurriaran

❮ Previous
Next ❯

Software Mentioned

ArcGIS
Excel
SPARROW
MATLAB
LOADEST
SWAT

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.