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题名:
Impact of Suspended Inorganic Particles on Phosphorus Cycling in the Yellow River (China)
作者: Pan, Gang1; Krom, Michael D.2,3; Zhang, Meiyi1; Zhang, Xianwei1; Wang, Lijing1; Dai, Lichun1; Yanqing Sheng(盛彦清)4; Mortimer, Robert J. G.2
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN号: 0013-936X
出版日期: 2013-09-03
卷号: 47, 期号:17, 页码:9685-9692
关键词: EQUILIBRIUM ADSORPTION THEORY ; SEDIMENTS ; ESTUARIES ; NITROGEN ; TRANSPORT ; PHOSPHATE ; FORMS ; FLUX ; SEA
学科分类: Engineering, Environmental ; Environmental Sciences
产权排序: [Pan, Gang; Zhang, Meiyi; Zhang, Xianwei; Wang, Lijing; Dai, Lichun] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China; [Krom, Michael D.; Mortimer, Robert J. G.] Univ Leeds, Sch Earth & Environm, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England; [Krom, Michael D.] Univ Haifa, Charney Sch Marine Sci, IL-31905 Haifa, Israel; [Sheng, Yanqing] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
通讯作者: Pan, G (reprint author), Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China. gpan@rcees.ac.cn ; yqsheng@yic.ac.cn
中文摘要: Phosphorus (P) in water and sediment in the Yellow River was measured for 21 stations from the source to the Bohai Sea in 2006-2007. The average total particulate matter (TPM) increased from 40 mg/L (upper reaches) to 520 mg/L (middle reaches) and 950 mg/L in the lower reaches of the river. The average dissolved PO4 concentration (0.43 mu mol/L) was significantly higher than that in 1980's but lower than the world average level despite high nutrient input to the system. Much of the P input was removed by adsorption, which was due to the high TPM rather than the surface activity of the particles since they had low labile Fe and low affinity for P. The sediment was a sink for P in the middle to lower reaches but not in the upper to middle reaches. TPM has been reduced by more than an order of magnitude due to artificial dams operating over recent decades. Modeling revealed that TPM of 0.2-1 g/L was a critical threshold for the Yellow River, below which most of the phosphate input cannot be removed by the particles and may cause eutrophication. These findings are important for river management and land ocean modeling of global biogeochemical P cycling.
英文摘要: Phosphorus (P) in water and sediment in the Yellow River was measured for 21 stations from the source to the Bohai Sea in 2006-2007. The average total particulate matter (TPM) increased from 40 mg/L (upper reaches) to 520 mg/L (middle reaches) and 950 mg/L in the lower reaches of the river. The average dissolved PO4 concentration (0.43 mu mol/L) was significantly higher than that in 1980's but lower than the world average level despite high nutrient input to the system. Much of the P input was removed by adsorption, which was due to the high TPM rather than the surface activity of the particles since they had low labile Fe and low affinity for P. The sediment was a sink for P in the middle to lower reaches but not in the upper to middle reaches. TPM has been reduced by more than an order of magnitude due to artificial dams operating over recent decades. Modeling revealed that TPM of 0.2-1 g/L was a critical threshold for the Yellow River, below which most of the phosphate input cannot be removed by the particles and may cause eutrophication. These findings are important for river management and land ocean modeling of global biogeochemical P cycling.
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
关键词[WOS]: EQUILIBRIUM ADSORPTION THEORY ; SEDIMENTS ; ESTUARIES ; NITROGEN ; TRANSPORT ; PHOSPHATE ; FORMS ; FLUX ; SEA
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000330094700017
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/7054
Appears in Collections:山东省海岸带环境工程技术研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
2.Univ Leeds, Sch Earth & Environm, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England
3.Univ Haifa, Charney Sch Marine Sci, IL-31905 Haifa, Israel
4.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

Recommended Citation:
Pan, Gang,Krom, Michael D.,Zhang, Meiyi,et al. Impact of Suspended Inorganic Particles on Phosphorus Cycling in the Yellow River (China)[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2013,47(17):9685-9692.
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