中国科学院水生生物研究所机构知识库
Advanced  
IHB OpenIR  > 水环境工程研究中心  > 期刊论文
题名: Effects of sediment dredging on internal phosphorus: A comparative field study focused on iron and phosphorus forms in sediments
作者: Jing, Liandong1; Liu, Xingli1; Bai, Song1; Wu, Chenxi2; Ao, Hongyi2; Liu, Jiantong2
关键词: Sediment dredging ; Iron ; Phosphorus forms
刊名: ECOLOGICAL ENGINEERING
发表日期: 2015-09-01
DOI: 10.1016/j.ecoleng.2015.04.099
卷: 82, 页:267-271
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]: Ecology ; Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Engineering
英文摘要: Sediment dredging is a controversial technology for eutrophication control. Its effects on phosphorus (P) cycling are still unclear. In this study, a long term 3 year field investigation was conducted at Dongqian Lake, China, following a sediment dredging project. The amount of iron (Fe) and P forms presented in the sediment from a dredged region (Y region) and a nearby un-dredged region (N region) were monitored and compared. The results showed that soon after the sediment dredging, there were no significant differences in NH4Cl extractable P (NH4Cl-P), NaHCO3/Na2S2O4 extractable P (BD-P) and residual P (Res-P) levels between the Y and N region. However, NaOH extractable reactive P (NaOH-rP) and non-reactive P (NaOH-nrP) were higher, and HCl extractable P (HCl-P) was lower, in the N region than in the Y region. Three years after dredging, considerable reduction in Fe (P < 0.01) was observed in the surface sediment from the N region, contrarily the amount of Fe (P < 0.05) accreted in the newly formed surface sediment from the Y region. Compared with the first year after the sediment dredging, TP increased by 35.2 and 42.3 mg/kg in the sediment of Y and N regions in the third year, respectively. The increased amount of TP in sediments may result from external loadings and existed primarily in two bioavailable forms (BD-P and NaOH-rP) in both the Y region and the N region. This result indicated that it is better to conduct dredging after external P loading has been blocked. In addition, more BD-P and NaOH-rP accumulated in the N region than the Y region. The observed increase in BD-P and NaOH-rP in the N region may result from Fe- and aluminum-adsorbed P from the water column. Our study suggests that Fe cycling in lakes following sediment dredging is an important factor for understanding the environmental effects of sediment dredging. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: LAKE-SEDIMENTS ; WATER-QUALITY ; SHALLOW ; RESTORATION ; EUTROPHICATION ; FRACTIONATION ; SIMULATION ; NITROGEN
语种: 英语
WOS记录号: WOS:000360189100029
ISSN号: 0925-8574
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27152
Appears in Collections:水环境工程研究中心_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Effects of sediment dredging on internal phosphorus:A comparative field study focused on iron and phosphorus forms in sediments.pdf(782KB)----开放获取--View Download

作者单位: 1.Southwest Univ Nationalities, Coll Chem & Environm Protect Engn, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Jing, Liandong]'s Articles
[Liu, Xingli]'s Articles
[Bai, Song]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Jing, Liandong]‘s Articles
[Liu, Xingli]‘s Articles
[Bai, Song]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Effects of sediment dredging on internal phosphorus:A comparative field study focused on iron and phosphorus forms in sediments.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院水生生物研究所 - Feedback
Powered by CSpace