Diel variations of hydrochemistry and influencing factors in a surface stream in subtropical karst area, SW China

In order to understand the diel variation and influencing factors of hydrochemistry in a surface creek fed by karst subterranean river in a subtropical area, where is located at Guancun Village, Daliang Township, Rong'an County of Guangxi Zhuang Autonomous Region, China, two monitoring sites we...

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Bibliographic Details
Published inHuanjing kexue Vol. 35; no. 8; p. 2944
Main Authors Zhang, Tao, Pu, Jun-Bing, Yuan, Dao-Xian, Zhang, Cheng, He, Shi-Yi, Yu, Shi, Liu, Wen, Mo, Xue, Zhou, Jian-Chao, Yang, Hui, Tang, Wei
Format Journal Article
LanguageChinese
Published China 01.08.2014
Subjects
Carbon - analysis
China
Environmental Monitoring
Ions - analysis
Periodicity
Rivers - chemistry
Temperature
Water Pollutants, Chemical - analysis
China
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Summary:In order to understand the diel variation and influencing factors of hydrochemistry in a surface creek fed by karst subterranean river in a subtropical area, where is located at Guancun Village, Daliang Township, Rong'an County of Guangxi Zhuang Autonomous Region, China, two monitoring sites were set simultaneously to launch Guancun subterranean river outlet (G1) and surface creek mouth (G2), respectively. Physical and hydrochemical parameters including pH, dissolved oxygen (DO), water temperature (T) and specific conductivity (Spc) were measured at 15-minute intervals and water samples for analyzing major ions such as Ca2+, HCO3- and NO3- as well as delta3C(DIC) were collected at 2-hour intervals. The results showed that: (1) G1 and G2 sites were both HCO3- Ca type water, however the two monitoring sites showed different diel variations of hydrogeochemical process; (2) The physical and hydrochemical parameters (T, DO, pH, Spc) and major ions (Ca2+, Mg2+, Na+, K+, HCO3-, SO4(2-), NO3-, Cl- in G1 site were bas
ISSN:0250-3301
DOI:10.13227/j.hjkx.2014.08.015