Quality assessment of aquatic environment and fluxes of major pollutants to the Xiaoqing River estuary
SUN Wei1, ZHANG Shou-ben2, YANG Jian-sen3, WEI Xiao1, ZHU Jin-long1, LIU Yuan-jin1
1. Shandong Marine Resource and Environment Research Institute, Marine Environment Monitoring Center of Shandong Province, Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Yantai 264006, China;
2. Weifang Marine Environmental Monitoring Central Station of Shangdong Province, Weifang 261041, China;
3. Shouguang Marine Environmental Monitoring Station, Shouguang 262700, China
Abstract：On basis of the field monitoring data obtained from 2010 to 2015, quality of water environment in the Xiaoqing River estuary was assessed and the flux variations of its major pollutants were explored systematically. The results showed that average concentrations of total phosphorus (TP), chemical oxygen demand (COD) and petroleum were all beyond the quality standards for Class Ⅲ water, according to Environmental Quality Standards for Surface Water (GB3838-2002). In Xiaoqing River estuary, the average comprehensive pollution index was 16.79 and the average pollution index was 1.53. Moreover, the major two pollutants of Xiaoqing River estuary were petroleum and COD, and the quality of water environmenthad been generally improved during 2010 to 2015. The average total amount of major pollutants discharge into the sea from the Xiaoqing River was 159766 t, in which COD played the leading role. Sources of pollutants in the Xiaoqing River included point pollution and non-point pollution. The point source pollution came from coastal sewage outfall of Xiaoqing River, while the non-point pollution came from chemical fertilizers in agriculture.
SUN Wei,ZHANG Shou-ben,YANG Jian-sen et al. Quality assessment of aquatic environment and fluxes of major pollutants to the Xiaoqing River estuary[J]. Marine Environmental Science, 2017, 36(3): 366-371.
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