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| 滇池沉积物有机磷形态分级特征 | |
| 引用本文： | 高海鹰,刘韬,丁士明,白秀玲,李宝.滇池沉积物有机磷形态分级特征[J].生态环境,2008,17(6). |
| 作者姓名： | 高海鹰 刘韬 丁士明 白秀玲 李宝 |
| 作者单位： | 1. 东南大学市政工程系,江苏,南京,210096 2. 东南大学市政工程系,江苏,南京,210096;中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏,南京,210008 3. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏,南京,210008 |
| 基金项目： | 国家自然科学基金资助项目 ， 国家高技术研究发展计划(863计划)项目 |
| 摘 要： | 考察沉积物磷对湖泊富营养化贡献时,大量研究涉足无机磷,对有机磷的研究十分薄弱.针对滇池的33个沉积物样品,采用有机磷分级提取方法,将沉积物有机磷分为活性磷、中等活性磷、非活性磷等三种具有不同稳定性的有机磷.结果表明:排除滇池西北部外源污染严重的样品后,沉积物有机磷与总磷有自北向南逐渐降低的变化趋势,有机质与总磷、活性有机磷、中等活性有机磷以及非活性有机磷都表现出了显著相关关系.沉积物活性有机磷和中等活性有机磷与NaHCO3提取无机磷均显著相关,说明二者具有潜在的生物有效性. |
| 关 键 词： | 有机磷 沉积物 滇池 分级提取 |
Characteristics of organic phosphorus fractions in sediments of Lake Dianchi |
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| Gao Haiying,Liu Tao,Ding Shiming,Bai Xiuling,Li Bao.Characteristics of organic phosphorus fractions in sediments of Lake Dianchi[J].Ecology and Environmnet,2008,17(6). | |
| Authors: | Gao Haiying Liu Tao Ding Shiming Bai Xiuling Li Bao |
| Institution: | Gao Haiying1,Liu Tao1,2,Ding Shiming2,Bai Xiuling2,Li Bao2 1. Department of Municipal Engineering,Southeast University,Nanjing 210096,China,2. State Key Laboratory of Lake Science , Environment,Nangjing Insitute of Geography , Limnology,Chinese Academy of Sciences,Nanjing 210008 |
| Abstract: | As most studies focus on inorganic phosphorus, little is known about the contribution of organic phosphorus in sediments to the occurrence of eutrophication in lakes. In this study, speciation of organic phosphorus in 33 sediments sampled from Lake Dianchi was characterized using sequential extraction method, and organic phosphorus in sediments was divided into labile, moderately labile and nonlabile organic phosphorus based on their different stability. The results showed that organic phosphorus and total ... |
| Keywords: | organic phosphorus sediment Lake Dianchi sequential extraction |
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