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题名: PHOSPHORUS FRACTIONS, SORPTION CHARACTERISTICS, AND ITS RELEASE IN SEDIMENTS OF A CHINESE EUTROPHIC RIVER (NANFEI RIVER)
作者: Li, Hui1, 2; Sun, Ai-Hua1, 2; Hou, Jie1, 2; Chen, Xi1, 2; Bai, Yun-Qin1, 2; Cao, Xiu-Yun1; Song, Chun-Lei1; Zhou, Yi-Yong1
通讯作者: Zhou, YY (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 Donghu South Rd, Wuhan 430072, Hubei Province, Peoples R China.
关键词: Sediment ; phosphorus fractionation ; phosphorus sorption ; organic matter ; Nanfei River
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2014
卷: 23, 期:5, 页:1222-1231
收录类别: SCI
文章类型: Article
部门归属: [Li, Hui; Sun, Ai-Hua; Hou, Jie; Chen, Xi; Bai, Yun-Qin; Cao, Xiu-Yun; Song, Chun-Lei; Zhou, Yi-Yong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei Province, Peoples R China; [Li, Hui; Sun, Ai-Hua; Hou, Jie; Chen, Xi; Bai, Yun-Qin] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [41230748, 41073066]; Major Science and Technology Program for Water Pollution Control and Treatment [2008ZX07316-004]; State Key Laboratory of Freshwater Ecology and Biotechnology [2011FBZ15]; Sino-Hungary Bilateral ST Cooperation [2008-333-4-7]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Sediment phosphorus release accelerates river eutrophication, whose key components remain unclear. In this paper, fractionation and sorption behaviors of phosphorus and content of organic matter (OM) were measured in sediments of a Chinese eutrophic river (Nanfei River) in different months. Concentrations of Chlorophyll a and total phosphorus were also determined in water column, and they were significantly and positively related with each other. Contents of iron-bound phosphorus (Fe(OOH)similar to P), calcium-bound phosphorus (CaCO3 similar to P), acid-soluble organic P (ASOP), and hot NaOH-extractable organic P (P-alk) ranged from 161.41 to 1195.81 mg kg(-1) (mean 655.23 mg kg-1), 49.34 to 1088.41 mg kg(-1) (mean 378.30 mg kg(-1) 16.13 to 167.41 mg kg(-1) (mean 86.80 mg kg(-1)), and 17.11 to 96.50 mg kg(-1) (mean 60.41 mg kg(-1)), respectively. So the Fe(OOH)similar to P and CaCO3 similar to P accounted for the larger part of sediment phosphorus pool. The results of Path Analysis showed that Fe(OOH)similar to P and P-alk had direct influences on phosphorus status in surface water, while CaCO3 similar to P and ASOP only had direct effect on SRP in interstitial water. Thus, sediment P fractions had different release pathways that were controlled by different factors, such as redox conditions, acidity, and microbial activity. Additionally, the OM gave rise not only to content of different P forms, but also to the sorption capacity, thereby determining sediment function to act as phosphorus source or sink. Moreover, the vertical distribution of P fractions and equilibrium phosphorus concentration was studied, which is of significance for remediation and management of eutrophic rivers.
英文摘要: Sediment phosphorus release accelerates river eutrophication, whose key components remain unclear. In this paper, fractionation and sorption behaviors of phosphorus and content of organic matter (OM) were measured in sediments of a Chinese eutrophic river (Nanfei River) in different months. Concentrations of Chlorophyll a and total phosphorus were also determined in water column, and they were significantly and positively related with each other. Contents of iron-bound phosphorus (Fe(OOH)similar to P), calcium-bound phosphorus (CaCO3 similar to P), acid-soluble organic P (ASOP), and hot NaOH-extractable organic P (P-alk) ranged from 161.41 to 1195.81 mg kg(-1) (mean 655.23 mg kg-1), 49.34 to 1088.41 mg kg(-1) (mean 378.30 mg kg(-1) 16.13 to 167.41 mg kg(-1) (mean 86.80 mg kg(-1)), and 17.11 to 96.50 mg kg(-1) (mean 60.41 mg kg(-1)), respectively. So the Fe(OOH)similar to P and CaCO3 similar to P accounted for the larger part of sediment phosphorus pool. The results of Path Analysis showed that Fe(OOH)similar to P and P-alk had direct influences on phosphorus status in surface water, while CaCO3 similar to P and ASOP only had direct effect on SRP in interstitial water. Thus, sediment P fractions had different release pathways that were controlled by different factors, such as redox conditions, acidity, and microbial activity. Additionally, the OM gave rise not only to content of different P forms, but also to the sorption capacity, thereby determining sediment function to act as phosphorus source or sink. Moreover, the vertical distribution of P fractions and equilibrium phosphorus concentration was studied, which is of significance for remediation and management of eutrophic rivers.
关键词[WOS]: LAKE LAKE TAIHU ; PHOSPHATE SORPTION ; BED SEDIMENTS ; SHALLOW ; WATER ; ADSORPTION ; SPECIATION ; PATTERNS ; CHAOHU ; SOILS
语种: 英语
WOS记录号: WOS:000335879000014
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20069
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei Province, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Li, Hui; Sun, Ai-Hua; Hou, Jie; Chen, Xi; Bai, Yun-Qin; Cao, Xiu-Yun; Song, Chun-Lei; Zhou, Yi-Yong.PHOSPHORUS FRACTIONS, SORPTION CHARACTERISTICS, AND ITS RELEASE IN SEDIMENTS OF A CHINESE EUTROPHIC RIVER (NANFEI RIVER),FRESENIUS ENVIRONMENTAL BULLETIN,2014,23(5):1222-1231
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