文献类型：期刊文献

英文题名：Geochemical characteristics and environmental indications of heavy metals in sediments from different aquaculture areas and adjacent waters of Zhanjiang Bay

作者：Zhou, Fengxia[1,2,3];Chen, Yutong[1,2,3];Wang, Shuangling[1,2,3];Chen, Fajin[1,2,3];Cao, Hansheng[1,2,3];Chen, Chunqing[1,2,3];Lao, Qibin[1,2,3,4]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Key Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Dept Educ Guangdong Prov, Key Lab Climate Resources & Environm Continental S, Zhanjiang 524088, Peoples R China;[4]Minist Nat Resources, Inst Oceanog 2, Key Lab Marine Ecosyst Dynam, Hangzhou 310012, Peoples R China

年份：2026

卷号：215

外文期刊名：MARINE ENVIRONMENTAL RESEARCH

收录：SCI-EXPANDED(收录号：WOS:001643960100001)、、EI(收录号：20255019709534)、Scopus(收录号：2-s2.0-105024555157)、WOS

基金：This work was supported by the National Natural Science Foundation of China (42276047, 42476144) , the Guangdong Basic and Applied Basic Research Foundation (2023A1515110473; 2021A1515110172; 2024A1515110183) and the Key Laboratory of Marine Ecosystem

语种：英文

外文关键词：Aquaculture; Heavy metals; Sediments; Geochemical characteristics; Zhanjiang bay

外文摘要：Zhanjiang Bay is one of the major aquaculture centers in China and has many types of aquaculture. This study investigated heavy metals in surface sediments of different aquaculture areas and non-aquaculutre areas in Zhanjiang Bay to clarify the impacts of aquaculture. The average total metal concentrations (mu g/g) were 0.075 for Cd, 42.32 for Cr, 13.95 for Cu, 15.65 for Ni, 29.76 for Pb and 48.48 for Zn. Relatively high concentrations were observed in the mixed (fish and shrimp) culture area and few non-aquaculture stations, indicating the influence of mixed culture and terrestrial wastes. Compared with the oyster culture area and cage culture area, the heavy metal concentrations in the mixed culture area were relatively high, which was related to the addition of large amounts of feed and poor water exchange in this area. The average percentages of Cd in acid soluble fraction were 52.0 % and 43.4 % for the aquaculture areas and non-aquaculture areas, respectively, indicating relatively stronger anthropogenic inputs and higher ecological risks in the aquaculture areas. The results of the environmental quality assessment indicated that some parts of the aquaculture areas and their surrounding stations were contaminated by human activities. In summary, aquaculture activities and terrestrial wastes contributed to the relatively high concentrations of heavy metals in some parts of the studied area. The impacts of different aquaculture types and water exchange conditions on heavy metals in sediments varied. The results of this study can provide useful references for scientific planning of aquaculture.