Distribution characteristics of chemicals and heavy metals in typical karst subterranean rivers in South China

Citation

Material Information

Title:
Distribution characteristics of chemicals and heavy metals in typical karst subterranean rivers in South China
Series Title:
Carbonates and Evaporites
Creator:
Liu, Shuyi
Liang, Chuan
Yang, Lichao
Long, Jianghua
Jing, Nan
Yang, Ruixiang
Liu, Xin
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Karst ( local )
Subterranean Rivers ( local )
South China ( local )
Heavy Metals ( local )
Chemicals ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
The goal of this study is to understand the impact of human activities on the characteristics of chemicals and heavy metals in typical karst subterranean rivers in South China and the patterns of their changes. Thus, the Jila, subterranean river in Liuzhou, the Lihu subterranean river in Nandan and the Maocun village subterranean river in Guilin in karst regions in Guangxi Province and the Banzhai subterranean river in Maolan in a karst region in Guizhou Province were selected for analysis. These four rivers are typical subterranean rivers and are affected by human activities to different extents. During October–December 2015 (dry season), we performed on-site investigations and collected water samples. The results show the following: (1) Ca2+ and HCO3− are significantly correlated with the heavy metals Cr and Ni in the four subterranean rivers (p < 0.01); this relationship is mainly attributed to rock weathering from dissolution but is caused mostly by human activities. (2) The detected concentrations of K+, Na+, NH4+, Cl−and SO42− are significantly correlated with the detected concentrations of NO3− in the four subterranean rivers (p < 0.01); domestic sewage, pesticides and fertilizer are the main sources. (3) The dilution from precipitation results in decreases in the ion concentrations, but the NO3− and SO42− concentrations following dilution from precipitation are still high, suggesting that domestic sewage and the application of fertilizer continuously impact the subterranean rivers. (4) Conductivity is an important index that reflects the status of land usage and water quality; the conductivity levels increase with anthropogenic disturbances. (5) The comparison of previously published ion concentrations in the Jila subterranean river in Liuzhou with those measured in this study shows that pollution has decreased substantially, which is closely related to urban planning and enhanced environmental consciousness in this region. The above results and conclusions can provide a scientific basis for the optimal m
Original Version:
Carbonates and Evaporites, Vol. 34, no. 4 (2019-11-06).

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

USFLDC Membership

Aggregations:
University of South Florida
Karst Information Portal

Postcard Information

Format:
serial

printinsert_linkshareget_appmore_horiz

Download Options

close

No images or PDF downloads are available for this resource.


Cite this item close

APA

Cras ut cursus ante, a fringilla nunc. Mauris lorem nunc, cursus sit amet enim ac, vehicula vestibulum mi. Mauris viverra nisl vel enim faucibus porta. Praesent sit amet ornare diam, non finibus nulla.

MLA

Cras efficitur magna et sapien varius, luctus ullamcorper dolor convallis. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Fusce sit amet justo ut erat laoreet congue sed a ante.

CHICAGO

Phasellus ornare in augue eu imperdiet. Donec malesuada sapien ante, at vehicula orci tempor molestie. Proin vitae urna elit. Pellentesque vitae nisi et diam euismod malesuada aliquet non erat.

WIKIPEDIA

Nunc fringilla dolor ut dictum placerat. Proin ac neque rutrum, consectetur ligula id, laoreet ligula. Nulla lorem massa, consectetur vitae consequat in, lobortis at dolor. Nunc sed leo odio.