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贵州草海湿地植物根际沉积物磷素形态特征

段素明 黄先飞 胡继伟 夏品华 王 义 刘义详

段素明, 黄先飞, 胡继伟, 夏品华, 王 义, 刘义详. 贵州草海湿地植物根际沉积物磷素形态特征[J]. 环境科学研究, 2013, 26(7): 743-749.
引用本文: 段素明, 黄先飞, 胡继伟, 夏品华, 王 义, 刘义详. 贵州草海湿地植物根际沉积物磷素形态特征[J]. 环境科学研究, 2013, 26(7): 743-749.
DUAN Su-ming, HUANG Xian-fei, HU Ji-wei, XIA Pin-hua, WANG Yi, LIU Yi-xiang. Study on Speciation of Phosphorus in Rhizosphere Sediments from Caohai Wetland in Guizhou Province[J]. Research of Environmental Sciences, 2013, 26(7): 743-749.
Citation: DUAN Su-ming, HUANG Xian-fei, HU Ji-wei, XIA Pin-hua, WANG Yi, LIU Yi-xiang. Study on Speciation of Phosphorus in Rhizosphere Sediments from Caohai Wetland in Guizhou Province[J]. Research of Environmental Sciences, 2013, 26(7): 743-749.

贵州草海湿地植物根际沉积物磷素形态特征

基金项目: 贵州省科学技术基金项目[黔科合J字(2011)2179];国家科技支撑计划项目(2011BAC02B02)

Study on Speciation of Phosphorus in Rhizosphere Sediments from Caohai Wetland in Guizhou Province

  • 摘要: 为分析草海湿地植物根际沉积物磷素形态特征,对24个根际沉积物样品中不同磷形态——Fe/A1-P(铁铝磷)、OP(有机磷)、Ca-P(钙磷)和Res-P(残渣态磷)的分布特征及其与金属、有机质的相关性进行了研究. 结果表明:湿地植物根际沉积物中w(Fe/A1-P)>w(OP)>w(Ca-P)>w(Res-P). w(TP)为114.2~863.9mg/kg,其中w(Fe/A1-P)为60.8~529.9mg/kg,占w(TP)的47.2%~83.5%,Fe/A1-P是磷的主要存在形态;w(OP)为12.2~195.1mg/kg,w(Ca-P)为6.1~205.7mg/kg,w(Res-P)为5.4~23.6mg/kg. 统计分析表明,w(TP)与w(Fe/A1-P)相关性较好(R=0.932,P<0.01);而w(LOI)(LOI为烧矢量)与w(OP)相关性较弱(R=0.343). 主成分分析表明,草海湿地植物根际沉积物中磷主要来自生活污水和农业面源污染;磷素存在的形态特征主要受湿地植物根系泌氧及沉积物中w(Fe)、w(Mn)影响,其次是偏碱性水体.

     

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出版历程
  • 收稿日期:  2013-01-12
  • 修回日期:  2013-05-08
  • 刊出日期:  2013-07-25

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