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题名: A novel flushing strategy for diatom bloom prevention in the lower-middle Hanjiang River
作者: Yang, Qiang1, 2; Xie, Ping1; Shen, Hong1; Xu, Jun1; Wang, Peili1; Zhang, Bin3
通讯作者: Xie, P (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.
关键词: Hanjiang river ; Diatom bloom ; Dam release ; Temperature ; Time lag ; Generalized Additive Model (GAM)
刊名: WATER RESEARCH
发表日期: 2012-05-15
DOI: 10.1016/j.watres.2012.01.051
卷: 46, 期:8, 页:2525-2534
收录类别: SCI
文章类型: Article
部门归属: [Yang, Qiang; Xie, Ping; Shen, Hong; Xu, Jun; Wang, Peili] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Yang, Qiang] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Zhang, Bin] Hubei Acad Environm Sci, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: Hubei Project for Research and Development[2008BCA004]
类目[WOS]: Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology ; Water Resources
摘要: There are many concerns over the environmental consequences of river regulation in China, such as the Three Gorges Project and the South-to-North Water Diversion Project (SNWDP). In this study, however, we attempted to find the positive role of these constructions in solving environmental problems. We explored the possibility for preventing downstream diatom blooms by using the water storage in the Danjiangkou Reservoir. And we developed a flushing strategy accessing the proper flushing time and water quantity to control the diatom growth. First, we set up a Generalized Additive Model (GAM) to analyze the dynamics of the bloom-formation species, Stephanodiscus hantzschii, in response to the environmental variation. The model took into account the time lags between the biovolume and the environmental parameters. The model indicated that, air temperature explained the most variance in biovolume, followed by soluble reactive silicon (SRSi), turbidity, TP, dam release, PAR, pH and total nitrogen (GAM, R-2 = 0.759). Afterwards, we applied the model to a new predictive dataset, in which values were simulated according to the assumed dam release and air temperature. The GAM predicted fewer releases for flushing by using this dataset than the measured data, implying a prospect of saving water when using this strategy. Finally, we drew a contour map to present the operating procedure of this strategy. Our flushing strategy is to regulate the dam release above a critical value dependent on the air temperatures predicted over the following few days. (C) 2012 Elsevier Ltd. All rights reserved.
英文摘要: There are many concerns over the environmental consequences of river regulation in China, such as the Three Gorges Project and the South-to-North Water Diversion Project (SNWDP). In this study, however, we attempted to find the positive role of these constructions in solving environmental problems. We explored the possibility for preventing downstream diatom blooms by using the water storage in the Danjiangkou Reservoir. And we developed a flushing strategy accessing the proper flushing time and water quantity to control the diatom growth. First, we set up a Generalized Additive Model (GAM) to analyze the dynamics of the bloom-formation species, Stephanodiscus hantzschii, in response to the environmental variation. The model took into account the time lags between the biovolume and the environmental parameters. The model indicated that, air temperature explained the most variance in biovolume, followed by soluble reactive silicon (SRSi), turbidity, TP, dam release, PAR, pH and total nitrogen (GAM, R-2 = 0.759). Afterwards, we applied the model to a new predictive dataset, in which values were simulated according to the assumed dam release and air temperature. The GAM predicted fewer releases for flushing by using this dataset than the measured data, implying a prospect of saving water when using this strategy. Finally, we drew a contour map to present the operating procedure of this strategy. Our flushing strategy is to regulate the dam release above a critical value dependent on the air temperatures predicted over the following few days. (C) 2012 Elsevier Ltd. All rights reserved.
关键词[WOS]: STEPHANODISCUS-HANTZSCHII ; MANAGEMENT STRATEGIES ; CYANOBACTERIAL BLOOMS ; DANJIANGKOU RESERVOIR ; FLOW MANAGEMENT ; LIMITED GROWTH ; WATER-QUALITY ; TEMPERATURE ; DAM ; BACILLARIOPHYCEAE
语种: 英语
WOS记录号: WOS:000303035400005
ISSN号: 0043-1354
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16871
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Hubei Acad Environm Sci, Wuhan 430072, Peoples R China

Recommended Citation:
Yang, Qiang; Xie, Ping; Shen, Hong; Xu, Jun; Wang, Peili; Zhang, Bin.A novel flushing strategy for diatom bloom prevention in the lower-middle Hanjiang River,WATER RESEARCH,2012,46(8):2525-2534
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