Impacts of Anthropogenic Changes on the Mun River Water: Insight from Spatio-Distributions and Relationship of C and N Species in Northeast Thailand

International Journal of Environmental Research and Public Health
Jinke LiuXiaoqiang Li

Abstract

C and N species, including dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), dissolved organic nitrogen (DON), NO₃- and NH₄⁺ contents in 57 river water samples collected from the Mun River of Thailand were measured to determine the relationships between these dissolved load species and their impacts on the environment. DOC values varied between 1.71 and 40.08 mg/L, averaging 11.14 mg/L; DON values ranged from 0.20 to 1.37 mg/L, with an average value of 0.48 mg/L; NO₃--N values averaged 0.18 mg/L; and NH₄⁺-N values averaged 0.15 mg/L. DOC contents increased while DON and NO₃- values decreased along the flow direction. The concentrations of NH₄⁺ maintained the same level in the whole watershed. DOC and DON values exhibited clearly higher concentrations in comparison with other rivers worldwide and were inextricably linked with anthropogenic inputs. The relationships of DOC, DON, and anthropogenic ions imply that there are two different anthropogenic sources (industrial activities and agricultural activities) of the dissolved load in the Mun River watershed. The limited correlations between the DON, NO₃-, and NH₄⁺ indicate that the N species are not dominated by a single factor, and reciprocal transformations of ri...Continue Reading

References

Jan 11, 2003·Environmental Pollution·A J Lawlor, E Tipping
Jul 1, 2005·The Science of the Total Environment·Emma L SharpBruce Jefferson
Sep 20, 2005·The Science of the Total Environment·Guilin Han, Cong-Qiang Liu
Mar 13, 2012·Water Research·Kathryn N KalscheurKimberly A Gray
May 29, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jan Willem ErismanWim de Vries
Nov 28, 2017·The Science of the Total Environment·Saowanit PrabnakornCharlotte de Fraiture

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Citations

Nov 28, 2019·International Journal of Environmental Research and Public Health·Jinke LiuRui Qu
Sep 22, 2019·International Journal of Environmental Research and Public Health·Xiaoqiang LiJinke Liu

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