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Distributive Characteristics of Riverine Nutrients in the Mun River, Northeast Thailand: Implications for Anthropogenic Inputs
Liu, Jinke1; Han, Guilin1; Liu, Xiaolong2; Liu, Man1; Song, Chao3; Yang, Kunhua1; Li, Xiaoqiang1; Zhang, Qian1,4
2019-05-01
Source PublicationWATER
ISSN2073-4441
Volume11Issue:5Pages:14
Corresponding AuthorHan, Guilin(hanguilin@cugb.edu.cn)
AbstractThe nutrient contents of Mun River water in northeast Thailand during the dry season were measured to investigate the effect of human activities on dissolved load species. Dissolved organic carbon (DOC) values varied from 2.5 to 17.1 mg/L, averaging 9.0 mg/L; dissolved inorganic nitrogen (DIN) ranged between 0.12 and 0.11 mg/L; Cl- values ranged from 1.7 to 668.6 mg/L, with an average value of 84.8 mg/L; dissolved silicon (DSi) varied from 1.7 to 9.9 mg/L; and SO42- values averaged 8.9 mg/L. DOC, Cl-, and SO42- contents decreased with the flow direction. The high concentrations of DOC, K+, Cl-, and SO42- in the upper reaches were closely related to anthropogenic inputs, specifically industrial sewage. The covariation demonstrated that these dissolved loads may have the same sources. In other regions, Cl- contents were derived from weathering products. DIN contents maintained the same level on the river, and few sampling sites with high concentrations of DIN were influenced by point source pollution. The extremely low P concentrations limited algal growth, and the DSi showed no clear relationship with N and K, indicating that DSi in the Mun River was controlled by the weathering input rather than biological effects. The exact reverse spatial distributions of DOC between the wet and dry seasons (which increased with the flow direction in the wet season) were due to different precipitation rates, and the rare rainfall in the dry season had difficulty flushing the soil and transporting soil organic matter into the rivers. The local government should control sewage discharge and optimize farming methods.
Keywordwater chemistry dissolved carbon dissolved nitrogen dissolved silicon Mun River northeast Thailand
DOI10.3390/w11050954
WOS KeywordDISSOLVED ORGANIC-CARBON ; DOMINATED CATCHMENT ; MAJOR ELEMENTS ; SURFACE WATERS ; LAND-USE ; SILICATE ; BASIN ; CHEMISTRY ; NITROGEN ; CLIMATE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41661144029] ; National Natural Science Foundation of China[41325010]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000472680400084
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58591
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHan, Guilin
Affiliation1.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China
2.Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin 300387, Peoples R China
3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jinke,Han, Guilin,Liu, Xiaolong,et al. Distributive Characteristics of Riverine Nutrients in the Mun River, Northeast Thailand: Implications for Anthropogenic Inputs[J]. WATER,2019,11(5):14.
APA Liu, Jinke.,Han, Guilin.,Liu, Xiaolong.,Liu, Man.,Song, Chao.,...&Zhang, Qian.(2019).Distributive Characteristics of Riverine Nutrients in the Mun River, Northeast Thailand: Implications for Anthropogenic Inputs.WATER,11(5),14.
MLA Liu, Jinke,et al."Distributive Characteristics of Riverine Nutrients in the Mun River, Northeast Thailand: Implications for Anthropogenic Inputs".WATER 11.5(2019):14.
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