QIU Jinquan1,2, FU Shanming1,2,3,*, XIAO Fang1,2, WANG Daofang1,2, CHANG Xiangyang1,2
(1.School of Environmental Science & Engineering, Guangzhou University, Guangzhou 510006, China;
2.Guangdong Provincial Key Laboratory of radionuclides pollution control and resources, Guangzhou 510006, China;
3. Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes, Guangzhou 510275, China)
Abstract: Based on regional survey of Hengshi River Basin surface soil around asulfide mine in north Guangdong from 2010 to 2013, trend prediction of heavy metals in soil and the ecological risk warning assessment were studied. Results show that the content of Cd, Cu, Pb, and Zn in soil had reduced significantly during the three years, and the current accumulation rate of Cd, Cu, Pb, and Zn are 0.001, 2.88, 3.71 and 3.11 mg/(kg·a), respectively, and the relative cumulative rate decreases as the order of Cd, Zn, Cu, and Pb. The ecological risk warning assessment showsLiangqiao and Shuilou village under serious ecological riskand Shangba village under slight ecological risk. According to the current accumulation rate, changes of ecological environment quality over the next 30 years were predicted and suggestions were also given.
Key words: sulfide mine; soil; heavy metal; prediction; ecological risk; warning assessment
EARTH AND ENVIRONMENT Vol. 43, No.3, Tot No.305, 2015, Page 338-344
