| Vertical variation of phosphorus forms in surface sediments from Wuli Bay, Taihu Lake, China |
| |
| 作者姓名： | 李军 刘丛强 王仕禄 朱兆洲 周志华 肖化云 |
| |
| 作者单位： | The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China，Graduate School Chinese Academy of Sciences Beijing 100039 China，The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China，The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China，The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China，Graduate School Chinese Academy of Sciences Beijing 100039 China，The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China，Graduate School Chinese Academy of Sciences Beijing 100039 China，The State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China |
| |
| 基金项目： | SupportedbytheKnowledgeInnovationMajorProjectsofChineseA-cademyofSciences(Nos.KZCX1-SW-12andKZCX2-105). |
| |
| 摘 要： | 1IntroductionPhosphorus,an essential nutrient for the primaryproductivity in freshwater systems,is an important fac-tor controlling lacustrine eutrophication.Although ex-ternal input of phosphorus has been assumed as the vi-tal responsibility for the eutrophication of lakes(ZhuJun et al.,2005),the remobilization of phosphorus insediments has a distinct influence on it as well(Bostr m et al.,1982).The concentrations of totalphosphorus(Ptotal)in the sediments are often related tothe trophic st…
|
| 关 键 词： | 太湖 磷 连续性变化 沉积物 湖泊污染 |
| 收稿时间： | 9 May 2007 |
Vertical variation of phosphorus forms in surface sediments from Wuli Bay, Taihu Lake, China |
| |
| Li Jun,Liu Congqiang,Wang Shilu,Zhu Zhaozhou,Zhou Zhihua,Xiao Huayun.Vertical variation of phosphorus forms in surface sediments from Wuli Bay, Taihu Lake, China[J].Chinese Journal of Geochemistry,2006,25(3):279-284. |
| |
| Authors: | Li Jun Liu Congqiang Wang Shilu Zhu Zhaozhou Zhou Zhihua Xiao Huayun |
| |
| Institution: | (1) The State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Graduate School, Chinese Academy of Sciences, 100039 Beijing, China |
| |
| Abstract: | In order to investigate the cycling of phosphorus in the Taihu Lake, a sequential extraction technique was used to separate different phosphorus forms in surficial sediments from the Wuli Bay of the -90% ), a large portion (75% -85%) of which lies in the CDB-extractable iron oxide phase. The low Fe/P atomic ratios (2.0 - 5.3) indicate that the Fe compounds extracted with CDB have a lower proportion of relatively crystalline phases in all samples, and that the absorption between iron and phosphorus has probably reached certain equilibrium. Organic C/N atomic ratios ( 8.8 - 10.6) for most of the samples are lower, which suggests a lacustrine authigenic source of organic matter in the sediments. Moreothat the organic phosphorus had been preferentially released via organic matter degradation during the early diagenesis process. |
| |
| Keywords: | sequential extraction phosphorus forms sediment Taihu Lake |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
