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| 底泥疏浚对磷形态和磷释放的影响 | |
| 引用本文： | ZHONG Ji-Cheng,YOU Ben-Sheng,FAN Cheng-Xin,LI Bao,ZHANG Lu,DING Shi-Ming. 底泥疏浚对磷形态和磷释放的影响[J]. 土壤圈, 2008, 18(1): 34-44 |
| 作者姓名： | ZHONG Ji-Cheng YOU Ben-Sheng FAN Cheng-Xin LI Bao ZHANG Lu DING Shi-Ming |
| 作者单位： | ZHONG Ji-Cheng（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Graduate School of the Chinese Academy of Sciences,Beijing 100039,China） ;YOU Ben-Sheng（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Graduate School of the Chinese Academy of Sciences,Beijing 100039,China） ;FAN Cheng-Xin（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China） ;LI Bao（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Graduate School of the Chinese Academy of Sciences,Beijing 100039,China） ;ZHANG Lu（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China） ;DING Shi-Ming（State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China） ; |
| 基金项目： | 中国科学院知识创新工程项目，国家自然科学基金，National High Technology Research and Development Program(863 Program) of China |
| 摘 要： | A laboratory experiment was carried out through a six-month incubation of undredged （control） and dredged cores to study the effect of sediment dredging on phosphorus （P） release from the sediment in the Taihu Lake. During the experiment, dredging the upper 30 cm layer could efficiently reduce the interstitial PO4^3-P concentration and different P forms in the sediment. The P fluxes of the undredged and dredged cores ranged from -5.1 to 3047.6 and -60.7 to 14.4μg·m^-2·d^-1, respectively. The fluxes of the dredged cores were generally lower than those of the control. Differences in the fluxes between the dredged and undredged cores were statistically significant （P 〈 0.05） from March to June 2006. The sediment P in the dredged cores had a lower release potential than that in the control. Dredging can be considered as a useful measure for rehabilitating the aquatic ecosystem after the external P loading in the Talhu Lake catchment was efficiently reduced. |
| 关 键 词： | 太湖 沉淀物 磷酸 化学元素 |
| 收稿时间： | 2007-05-09 |
| 修稿时间： | 2007-09-19 |
Influence of sediment dredging on chemical forms and release of phosphorus |
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| ZHONG Ji-Cheng,YOU Ben-Sheng,FAN Cheng-Xin,LI Bao,ZHANG Lu and DING Shi-Ming. Influence of sediment dredging on chemical forms and release of phosphorus[J]. Pedosphere, 2008, 18(1): 34-44 | |
| Authors: | ZHONG Ji-Cheng YOU Ben-Sheng FAN Cheng-Xin LI Bao ZHANG Lu DING Shi-Ming |
| Affiliation: | State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn;Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn;Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn;State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn;Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn;State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnoloyy, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: jczhong@niglas.ac.cn |
| Abstract: | A laboratory experiment was carried out through a six-month incubation of undredged(control)and dredged cores to study the effect of sediment dredging on phosphorus(P)release from the sediment in the Taihu Lake.During the experiment,dredging the upper 30 cm layer could efficiently reduce the interstitial PO3/4- P concentration and different P the fluxes between the dredged and undredged cores were statistically significant(P ＜ 0.05)from March to June 2006.The sediment P in the dredged cores had a lower release potential than that in the control.Dredging can be considered as a useful measure for rehabilitating the aquatic ecosystem after the external P loading in the Taihu Lake catchment was efficiently reduced. |
| Keywords: | phosphorus forms phosphorous release sediment dredging Taihu Lake |
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