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《Geoscience》 2018-05
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Ecological and Environmental Effects of Raw Coal and Coal Combustion Pollution in Xuanhua,Hebei Province

LIU Yu;XIANG Wu;ZHANG Yanxi;XING Xudong;ZHU Jie;YANG Weilin;School of Earth Science,China University of Geosciences;Hebei Institute of Geological Survey;Hunan Key Laboratory of Land Resources Evaluation and Utilization;  
Geochemical distribution characteristics of 16 PAHs and 13 kinds of heavy metal elements,including Hg,Cd,V,Zn,Mn,Cr,Mo,U,etc.,were investigated in the topsoil and near surface dust of the raw coal and coal combustion polluted area in Xuanhua,Hebei Province. The results showed that Hg and Cd are the dominant pollutant within about 100 meters in raw coal polluted area. While,Hg,V,and Cd were the dominant pollutants within 2,000 meters in coal combustion area,where being downwind from coal burning enterprises. And the accumulation of Hg,Cd,Zn,Mo,U,PAHs in topsoil of the raw coal polluted area and Hg,V,Mo,U,Mn,Cr,PAHs of the coal combustion polluted area were mainly from atmospheric deposition. Enzyme activities of the urease,alkaline phosphatase and β-glucosidase in the soil were all restrained to varying degrees with the greatest of β-glucosidase in polluted areas. In addition,the inhibition of soil enzyme activities by coal combustion polluted is more significant than that of raw coal,implying the negative effect of coal pollution on soil carbon cycling.
【Fund】: 河北省财政厅项目“河北省山水林田湖生态环境修复规划”(2121299);; 国土资源评价与利用湖南省重点实验室项目(SYS-ZX-201802)
【CateGory Index】: X53;X826
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