期刊文献+

安庆菜子湖退耕湿地土壤中的重金属含量及其污染评价 被引量:12

Contents and Pollution Evaluation of Heavy Metals in Soils of Wetlands after Returning Farmland to Lake in Caizi Lake in Anqing City
原文传递
导出
摘要 通过调查和采样,测定了安庆菜子湖退耕湿地土壤重金属含量;采用潜在生态危险指数法,评价了湿地土壤重金属含量的生态危险;对土壤重金属和土壤理化性质进行主成分分析和Pearson相关性分析。结果表明,研究区土壤重金属含量都低于国家土壤质量二级标准,表明研究区的土壤重金属污染程度较低。除Pb之外,土壤其他重金属含量都大于长江流域土壤背景值,表明研究区土壤重金属存在一定的累积。随土壤深度增加,不同重金属含量变化存在差异,Mn含量在增加,并在底层富集明显,Zn、Pb、Cr和Cu含量波动变化,Ni含量在减少。研究区土壤重金属风险等级整体偏低,属轻度污染。酸模(Rumex acetosa)群落下的土壤中的重金属含量最高,其潜在生态危害程度也最高,其次为芦苇(Phragmites australis)群落下的土壤,细叶薹草(Carex rigescens)群落下的土壤的潜在生态危害程度最低。土壤中Cu、Pb、Ni和Zn含量受人类活动影响较大,农业活动是其主要来源,Cr可能来自自然源,Mn和Ni的来源较复杂。 In order to know soil environment status, the accumulation and distributions of heavy metal in soils of Caizi lake wetland in Anqing were researched. The potential ecological risk index method was applied to assess the potential ecological risk in this area. Correlation between heavy metals and soil physicochemical properties was identified using correlation analysis and principal component analysis. The results showed that the contents of heavy metal were lower in soils of Caizi lake than the second grade standard values of Chinese environmental quality standards for soils, indicated that heavy metals were slight pollution in wetland soil. But the contents of heavy metals were higher than the grade standard values of Changjiang standard for soils, indicated that heavy metal accumulated in wetland soil. The contents of different heavy metals changed significantly along the soil profile, the content of manganese gradually increased with increasing depth in the soil and enriched in the underlying soil, the contents of zinc, lead and chromium changed with the increase of soil depth, the content of copper was decreased and then increased with the increase of soil depth, the content of nickel reduced with the increase of soil depth. Potential ecological risk index showed that heavy metals were slight pollution, the risk level of heavy metals in Phragmites australis wetland soil and Rumex acetosa wetland soil were more serious than that of Carex rigescens wetland soil. Correlation analysis showed that the contents of copper, lead and zinc significantly correlated with one another, indicating that they might come from similar sources. Copper, lead and zinc probably came from the agricultural production activities. Chromium mainly came from soil parent material, nickel and manganese probably came from complicated sources. Correlation analysis showed the contents of nickel, lead and copper significantly correlated with organic matter and the physical clay content of soil. Manganese concentration was positive correlated with p H.
出处 《湿地科学》 CSCD 北大核心 2015年第4期437-443,共7页 Wetland Science
基金 国家自然科学基金项目(41001369和41371480) 安徽省振兴人才计划项目资助
关键词 退耕湿地 重金属 分布特征 污染评价 wetlands after returning farmland heavy metals distribution characteristics pollution evaluation
  • 相关文献

参考文献14

  • 1杨远祥.小鳞苔草(Carex gentiles Franch.)铅锌富集特性及生理机制初步研究[D].四川农业大学2007
  • 2腾葳,柳琪,李倩,柳亦博,编著.重金属污染对农产品的危害与风险评估[M]. 化学工业出版社, 2010
  • 3鲁如坤主编.土壤农业化学分析方法[M]. 中国农业科技出版社, 2000
  • 4Yuan Li,Haibo Zhang,Xiaobing Chen,Chen Tu,Yongming Luo,Peter Christie.Distribution of heavy metals in soils of the Yellow River Delta: concentrations in different soil horizons and source identification[J]. Journal of Soils and Sediments . 2014 (6)
  • 5Wei Jiao,Wei Ouyang,Fanghua Hao,Fangli Wang,Bing Liu.Long-term cultivation impact on the heavy metal behavior in a reclaimed wetland, Northeast China[J]. Journal of Soils and Sediments . 2014 (3)
  • 6Rong Xiao,Junhong Bai,Haifeng Gao,Laibin Huang,Chen Huang,Peipei Liu.Heavy metals (Cr and Ni) distribution and fractionation in cropland soils from reclaimed tidal wetlands in Pearl River estuary, South China[J]. Procedia Environmental Sciences . 2012
  • 7Ryan O’Dell,Wendy Silk,Peter Green,Victor Claassen.Compost amendment of Cu–Zn minespoil reduces toxic bioavailable heavy metal concentrations and promotes establishment and biomass production of Bromus carinatus (Hook and Arn.)[J]. Environmental Pollution . 2006 (1)
  • 8L.C. Batty,A.J.M. Baker,B.D. Wheeler,C.D. Curtis.The Effect of pH and Plaque on the Uptake of Cu and Mn in Phragmites australis (Cav.) Trin ex. Steudel[J]. Annals of Botany . 2000 (3)
  • 9Kasper Kjellberg Christensen,Henning Skovgaard Jensen,Frede ?stergaard Andersen,Marianne Holmer,Cathleen Wigand.Interferences between root plaque formation and phosphorus availability for isoetids in sediments of oligotrophic lakes[J]. Biogeochemistry . 1998 (2)
  • 10Willy Baeyens,Leo Goeyens,Frank Monteny,Marc Elskens.Effect of organic complexation on the behaviour of dissolved Cd, Cu and Zn in the Scheldt estuary[J]. Hydrobiologia . 1997 (1)

共引文献66

同被引文献243

引证文献12

二级引证文献86

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部