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Effects of land use on water chemistry in a river draining karst terrain, southwest China
Guilin Han;  Fushan Lib;  Qiu Tan
2014
发表期刊Hydrological Sciences Journal5
卷号59期号:5页码:1063-1073
摘要

The effects of land use on river water chemistry in a typical karst watershed (Wujiang River) of southwest China have been evaluated. Dissolved major ions and Sr isotopic compositions were determined in 11 independent sub-watersheds of the Wujiang River to investigate the spatio-temporal variations in river water chemistry and their relationship to land use. The results show significant spatial variability in pH, major ions, total dissolved solids (TDS), and Sr isotopic compositions throughout the basin. Correlation analysis indicates that nitrogen content is significantly related to forest coverage. Nitrogen and potassium generally have higher values in the rainy season, and the percentage of agricultural land controlled NO3 - levels, which originate from anthropogenic sources. Forest cover, which varies between 35% and 71%, has no statistically significant impact on river solute concentrations, but the TDS flux is low in sub-watersheds with greater forest cover. Geological sources have a significant influence on pH and Sr isotopic compositions in river water throughout the basin.

关键词Land Use River Water Water Chemistry Wujiang River Basin, China China
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/11198
专题环境地球化学国家重点实验室
作者单位1.School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
2.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
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GB/T 7714
Guilin Han;Fushan Lib;Qiu Tan. Effects of land use on water chemistry in a river draining karst terrain, southwest China[J]. Hydrological Sciences Journal5,2014,59(5):1063-1073.
APA Guilin Han;Fushan Lib;Qiu Tan.(2014).Effects of land use on water chemistry in a river draining karst terrain, southwest China.Hydrological Sciences Journal5,59(5),1063-1073.
MLA Guilin Han;Fushan Lib;Qiu Tan."Effects of land use on water chemistry in a river draining karst terrain, southwest China".Hydrological Sciences Journal5 59.5(2014):1063-1073.
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