Characteristics of Phosphorus Compounds and Their Effects in Sediments of an Eutrophic Chaohu Lake, China
文献类型：期刊论文
| 作者 | Zhang Wenqiang; Shan Baoqing; Zhang Hong; Tang Wenzhong |
| 刊名 | CLEAN-Soil Air Water
 |
| 出版日期 | 2015-04 |
| 卷号 | 43期号:4页码:544-550 |
| 关键词 | Eutrophication Nutrient sources Organic phosphorus P-31-NMR Water quality |
| 英文摘要 | Surface sediments and sediment cores in a shallow eutrophic lake, Chaohu Lake, were analyzed by P-31-NMR to reveal the phosphorus (P) species and their effects on upper water quality. Total P (TP) in the NaOH-EDTA extracts was dominated by inorganic phosphate (P-i), with higher levels being observed in the heavily eutrophic western lake (79.1 +/- 1.7%) than in the eastern lake (68.1 +/- 2.4%). These findings were opposite to those for organic phosphorus (P-o). P-i (ortho-phosphate and pyrophosphate) and P-o (phosphonates, ortho-phosphate monoesters and phospholipids, DNA) were detected in the NaOH-EDTA extracts of the sediments by P-31-NMR. The majority of P-o consisted of ortho-phosphate monoesters (80.2 +/- 2.7%). For sediment cores, the contents of phospholipids and DNA declined more rapidly than that of ortho-phosphate monoesters and pyrophosphate as sediment depth increased, with these compounds primarily occurring in the top 10 cm of sediment. The positive relationship between P-o in sediment and TP in the water showed that P-o compounds in the sediment would be released to the water. These compounds of P-o will be mineralized to P-i and potentially bioavailable for recycling to surface water, supporting further growth of aquatic organisms and leading to algal blooms. |
| 研究领域[WOS] | Environmental Sciences ; Marine & Freshwater Biology ; Water Resources |
| WOS记录号 | WOS:000353384600010 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32736]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Wenqiang,Shan Baoqing,Zhang Hong,et al. Characteristics of Phosphorus Compounds and Their Effects in Sediments of an Eutrophic Chaohu Lake, China[J]. CLEAN-Soil Air Water,2015,43(4):544-550. |
| APA | Zhang Wenqiang,Shan Baoqing,Zhang Hong,&Tang Wenzhong.(2015).Characteristics of Phosphorus Compounds and Their Effects in Sediments of an Eutrophic Chaohu Lake, China.CLEAN-Soil Air Water,43(4),544-550. |
| MLA | Zhang Wenqiang,et al."Characteristics of Phosphorus Compounds and Their Effects in Sediments of an Eutrophic Chaohu Lake, China".CLEAN-Soil Air Water 43.4(2015):544-550. |
入库方式： OAI收割
来源：生态环境研究中心
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