文献类型：期刊文献

英文题名：Spatial and seasonal characteristics of dissolved heavy metals in the aquaculture areas of Beibu Gulf, South China

作者：Liu, Guoqiang[1];Lao, Qibin[1];Su, Qizhong[1];Shen, Youli[1];Chen, Fajin[2,3];Qing, Shangmin[1];Wei, Chunlei[1];Zhang, Chunhua[1]

机构：[1]State Ocean Adm, Marine Environm Monitoring Ctr Beihai, 16 Xinan Rd, Haicheng Dist 536000, Beihai, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China

年份：2020

卷号：26

期号：7

起止页码：1957

外文期刊名：HUMAN AND ECOLOGICAL RISK ASSESSMENT

收录：SCI-EXPANDED(收录号：WOS:000472790900001)、、Scopus(收录号：2-s2.0-85067848453)、WOS

基金：This work was supported by the National Key Research and Development Plan [grant number 2016YFC1401403]; Guangdong Natural Science Foundation of China [grant number 2016A030312004]; Marine Science and Technology Foundation of Director of South China Sea Branch, State Oceanic Administration [grant number 1653]; International Science and Technology Cooperation Project [grant number GASI-IPOVAI-04]; and Project of Enhancing School with Innovation of Guangdong Ocean University [grant number GDOU2016050260].

语种：英文

外文关键词：heavy metals; spatial and seasonal variation; aquaculture area; Beibu Gulf; ecological risk assessment

外文摘要：To study the contamination of heavy metals in the aquaculture area of Beibu Gulf, the concentrations of seven metals in seawater were investigated. The results showed that significant seasonal and spatial distributions of heavy metals were observed in the four aquaculture areas. Generally, the heavy-metal concentrations in the Maowei Sea were higher than the other three aquaculture areas, which may be related to local industrialization and urbanization development. The concentrations of some metals were obviously higher in wet seasons than in dry seasons, which may be attributed to the seasonal river discharge, rainfall and seawater intrusion. Compared to other regions, some metal levels revealed relatively high contamination. Remarkably, the concentrations of Hg, Cu and Cd were much higher than concentrations found in the past 20 years in the seawater of the Guangxi Beibu Gulf, suggesting that there were increasing anthropogenic inputs of those metals in the aquaculture areas. The assessment of ecological risk index (ERI) indicated that the highest ERI value was found in the Maowei Sea, followed by Pearl Bay, Lianzhou Bay and Hongsha. Hg is the main ecological risk factor, and the heavy-metal contamination in the aquaculture areas must not be ignored.