| Lake sediments from Dianchi Lake: A phosphorus sink or source? | |
| Gao, L; Yang, H; Zhou, JM; Lu, JJ | |
| 刊名 | PEDOSPHERE
 |
| 2004-11-01 | |
| 卷号 | 14期号:4页码:483-490 |
| 关键词 | adsorption Dianchi Lake phosphorus release sediment |
| ISSN号 | 1002-0160 |
| 通讯作者 | Gao, L() |
| 英文摘要 | Dianchi Lake is a highly eutrophic lake in southwestern China where phosphorus (P) is the limiting element for eutrophication and where lake sediments play an important role in the P cycle. One hundred and eighteen sites were sampled throughout Dianchi Lake in 2002 to investigate the P loading of the lake sediments, while fresh surface sediments were studied in the laboratory to clarify its role for phosphorus. The results showed that concentrations of total phosphorus (TP) in sediments were very high, with a maximum value of 6.66 g kg(-1), and decreased with sediment depth. P adsorption on surface sediments was rapid with adsorption amounts higher in acidic than in alkaline conditions. The release experiments showed that P release increased as pH rose from 7.0 to 10.5. Additionally, compared with aerobic conditions, P release was much higher under anaerobic conditions, especially with low P content in the lake water. At present, the sediments in Dianchi Lake still function as a sink for phosphorus at high P levels in lake water. However, if the external P load was reduced and P content in take water became low, the sediment would have a large potential for P release under anaerobic conditions. |
| 收录类别 | SCI |
| WOS关键词 | SORPTION ; WATER |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000224774000009 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2559311 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Gao, L |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, L,Yang, H,Zhou, JM,et al. Lake sediments from Dianchi Lake: A phosphorus sink or source?[J]. PEDOSPHERE,2004,14(4):483-490. |
| APA | Gao, L,Yang, H,Zhou, JM,&Lu, JJ.(2004).Lake sediments from Dianchi Lake: A phosphorus sink or source?.PEDOSPHERE,14(4),483-490. |
| MLA | Gao, L,et al."Lake sediments from Dianchi Lake: A phosphorus sink or source?".PEDOSPHERE 14.4(2004):483-490. |
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