Phosphorus forms and bioavailability of lake sediments in the middle and lower reaches of Yangtze River
文献类型：期刊论文
| 作者 | Zhu Guangwei; Qin Boqiang; Zhang Lu |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2006 |
| 卷号 | 49期号:4页码:28-37 |
| 关键词 | shallow lakes sediments phosphorus geochemical forms bioavailability eutrophication hydrodynamics |
| ISSN号 | 1006-9313 |
| 英文摘要 | Forms of phosphorus in sediments from 25 lakes in the middle and lower reaches of Yangtze River were analyzed by the sequential extraction procedure. Contents and spatial distrubution of algal available phosphorus (AAP) in sediments of Lake Taihu, the third largest freshwater lake of China, were also studied. Relationships between phosphorus forms in sediment and macrophytes coverage in sample sites, as well as phosphorus forms in sediments and chlorophyal contents in lake water were discussed. Exchangeable form of phosphorus (Ex-P) in surface sediments was significantly positive correlative to total phosphorus (TP), dissolved total phosphorus (DTP) and soluble reactive phosphorus (SRP) contents in the lake water. Bioavailable phosphorus (Bio-P) contents in sediments from macrophytes dominant sites were significantly lower than that in no macrophyte sites. In Lake Taihu, Ex-P content in top 3 cm sediment was highest. However, content of ferric fraction phosphorus (Fe-P) was highest in 4-10 cm. Bioavailable phosphorus (Bio-P) contents in surface sediments positively correlated to Chlorophyll a contents in water of Lake Taihu with significant difference. Therefore, contents of Bio-P and AAP could be acted as the indicators of risks of internal release of phosphorus in the shallow lakes. It was estimated that there were 268.6 ton AAP in top 1 cm sediments in Lake Taihu. Sediment suspension caused by strong wind-induced wave disturbance could carry plenty of AAP into water in large shallow lakes like Lake Taihu. |
| 公开日期 | 2012-03-08 |
| 源URL | [http://159.226.73.51/handle/332005/2997]  |
| 专题 | 南京地理与湖泊研究所_湖泊室 |
| 推荐引用方式 GB/T 7714 | Zhu Guangwei,Qin Boqiang,Zhang Lu. Phosphorus forms and bioavailability of lake sediments in the middle and lower reaches of Yangtze River[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(4):28-37. |
| APA | Zhu Guangwei,Qin Boqiang,&Zhang Lu.(2006).Phosphorus forms and bioavailability of lake sediments in the middle and lower reaches of Yangtze River.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(4),28-37. |
| MLA | Zhu Guangwei,et al."Phosphorus forms and bioavailability of lake sediments in the middle and lower reaches of Yangtze River".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.4(2006):28-37. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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