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滇池福保湾沉积物不同形态磷的垂向分布

郭建宁 卢少勇 金相灿 姜 霞 盛 力

郭建宁, 卢少勇, 金相灿, 姜 霞, 盛 力. 滇池福保湾沉积物不同形态磷的垂向分布[J]. 环境科学研究, 2007, 20(2): 78-83.
引用本文: 郭建宁, 卢少勇, 金相灿, 姜 霞, 盛 力. 滇池福保湾沉积物不同形态磷的垂向分布[J]. 环境科学研究, 2007, 20(2): 78-83.
GUO Jian-ning, LU Shao-yong, JIN Xiang-can, JIANG Xia, SHENG Li. Vertical Distribution of Various Forms of Phosphorus in the Sediments of Fubao Gulf, Dianchi Lake[J]. Research of Environmental Sciences, 2007, 20(2): 78-83.
Citation: GUO Jian-ning, LU Shao-yong, JIN Xiang-can, JIANG Xia, SHENG Li. Vertical Distribution of Various Forms of Phosphorus in the Sediments of Fubao Gulf, Dianchi Lake[J]. Research of Environmental Sciences, 2007, 20(2): 78-83.

滇池福保湾沉积物不同形态磷的垂向分布

基金项目: 国家高技术研究发展计划(863)项目(2005AA60101005);国家重点基础研究发展计划(973)项目(2002CB412300)

Vertical Distribution of Various Forms of Phosphorus in the Sediments of Fubao Gulf, Dianchi Lake

  • 摘要: 应用SMT连续提取法分析滇池福保湾柱状沉积物的磷(P)形态,探讨P形态的垂向分布特征.沉积物中总磷 (TP)含量高,最高达4 200 mg/kg, 无机磷 (IP)是TP的主要部分,占TP的52%~91%, 铁/铝结合态磷 (Fe/Al-P)是IP的主要部分,占IP的55%~94%.同一湖区不同采样点的沉积物P形态的垂向变化不同,湖湾北端近河口处和南端远离河口处的沉积物中Fe/Al-P, IP, 有机磷 (OP)和TP含量随深度增加而增加,6~11 cm 层的含量最高,这与近年来入湖河流污染负荷削减和河堤阻隔导致P入湖量减少有关.河口处沉积物的钙结合态磷 (Ca-P)含量随深度增加而增加,最南端沉积物的Ca-P含量随深度增加而减少.离河口较远的沉积物中,Fe/Al-P, IP, OP,TP和Ca-P均随深度增加而减少.各点沉积物P形态的变化受该点人类活动带来的入湖污染物量的影响较大,距河口最远处的沉积物中P形态随深度变化不如其他点明显.

     

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出版历程
  • 收稿日期:  2006-07-05
  • 刊出日期:  2007-04-25

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