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引用本文:王琦,姜霞,金相灿,徐玉慧.太湖不同营养水平湖区沉积物磷形态与生物可利用磷的分布及相互关系.湖泊科学,2006,18(2):120-126. DOI:10.18307/2006.0204
WANG Qi,JIANG Xia,JIN Xiangcan,XU Yuhui.Distribution of phosphorus and bio-available phosphorus forms and their relationship in the sediments from different regions of Lake Taihu. J. Lake Sci.2006,18(2):120-126. DOI:10.18307/2006.0204
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太湖不同营养水平湖区沉积物磷形态与生物可利用磷的分布及相互关系
王琦1,2, 姜霞2, 金相灿2, 徐玉慧2,3
1.西北农林科技大学 生命科学学院, 杨凌 712100;2.中国环境科学研究院 湖泊生态环境创新基地, 北京 100012;3.吉林大学环境与资源学院, 长春 130026
摘要:
采用EDTA螯合剂法和不同的化学提取法,研究了太湖3个不同营养水平湖区中8个位点表层沉积物总磷、各组分磷及生物可利用磷的含量分布,探讨了太湖不同营养水平湖区表层沉积物的释磷潜力和生物可利用磷的来源.结果表明,太湖不同营养水平湖区表层沉积物总磷、无机磷和生物可利用磷含量分布差异较大,且与各湖的营养水平相-致.有机磷含量与有机质和含水率显著相关;沉积物中Fe-P和Ca-P对生物可利用磷的贡献较大,这部分磷具有较大的潜在释放风险.
关键词:  太湖  沉积物  磷形态  生物可利用磷
DOI:10.18307/2006.0204
分类号:
基金项目:国家重点基础研究发展规划项目(2002CB412304)资助
Distribution of phosphorus and bio-available phosphorus forms and their relationship in the sediments from different regions of Lake Taihu
WANG Qi1,2, JIANG Xia2, JIN Xiangcan2, XU Yuhui2,3
1.College of Life Science, Northwest Sci-Tech University of Agriculture and Forestry, Yangting 712100, P. R. China;2.Research Center of Lake Environment, Chinese Research Academy of Environmental Science, Beijing 100012, P. R. China;3.College of Environment and Resource, Jilin University, Changchun 130026, P. R. China
Abstract:
Concentrations of total phosphorus (TP), their fractions and the bio-available phosphorus(BAP) in the surface sediments From three different regions of Lake Taihu are investigated. In addition, the potential release capacify of P from the surface sediment and their sources were discussed. The concentrations of TP, P fractions an BAP are coincided very well with their trophic states. The concentrations of organic P in the sediments have a good relationship with organic matter and moisture content. BAP is mainly from Fe bound P(Fe-P) and Ca hound P(Ca~P), which show the highest potential risk of release.
Key words:  Lake Taihu  sediment  phosphorus forms  hio-available phosphorus
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