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Time-Lag Effect: River Algal Blooms on Multiple Driving Factors

文献类型：期刊论文

作者Liu, Chengjian1,2; Chen, Yan1,2,3; Zou, Lei4; Cheng, Bingfen1,2; Huang, Tonghui1,2
刊名FRONTIERS IN EARTH SCIENCE
出版日期2022-01-24
卷号9页码:12
关键词river algal blooms time-lag effect drive factors river ecosystem Hanjiang River
DOI10.3389/feart.2021.813287
通讯作者Liu, Chengjian(chengjianliu@stumail.nwu.edu.cn)
英文摘要Compared to the eutrophication of lakes and reservoirs, the mechanism of river algal blooms in a flowing water body are more complicated, and often lead to serious consequence in catchment scale. Due to the simultaneous impact of a variety of environmental pressures, the water ecosystem integrity state often shows a response characteristic of accumulation, complexity and time lag, therefore it is difficult to use conventional hydrodynamic and water quality models to scientifically characterize and analyze. The lower Hanjiang River (HR) is an important influence area of the middle route of the South-to-North Water Diversion Project (SNWDP) in China, continuous river blooms issue has become a major national concern. In this study, a time-lag analysis approach was developed to identify the causes of algal blooms formation and the time-lag response law in the lower HR, including principal component analysis (PCA), grey relation analysis (GRA), and Almon Distributed Lag Model. Results found that, the hydrological regime (Delta H) contributes the most to the river bloom, especially due to the flow hindrance of the Yangtze River (YR) and the water project upstream. It is also found that the algal bloom outbreak in the lower HR is not an immediate response to the driving factors. It has a time lag of about 1 period (10 days) in the response with antecedent driving factors. Finally, we discussed the influence and its responding mechanism of Delta H on the growth of phytoplankton. The research can provide early warning for the prevention and control of algal blooms in the large river system.
资助项目National Key R&D Program of China[2021YFC3201003] ; National Natural Science Foundation of China[51879252] ; Fundamental Research Funds for the Central Public-interest Scientific Institution[2021KSKY-04] ; Special Fund for Basic Scientific Research of Central Public Research Institutes[2020YSKY-003] ; Chinese Research Academy of Environmental Sciences
WOS研究方向Geology
语种英语
WOS记录号WOS:000752032600001
出版者FRONTIERS MEDIA SA
源URL[http://119.78.100.138/handle/2HOD01W0/15263]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Liu, Chengjian
作者单位1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing, Peoples R China
2.Chinese Res Inst Environm Sci, State Environm Protect Key Lab Estuarine & Coasta, Beijing, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proces, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Chengjian,Chen, Yan,Zou, Lei,et al. Time-Lag Effect: River Algal Blooms on Multiple Driving Factors[J]. FRONTIERS IN EARTH SCIENCE,2022,9:12.
APA Liu, Chengjian,Chen, Yan,Zou, Lei,Cheng, Bingfen,&Huang, Tonghui.(2022).Time-Lag Effect: River Algal Blooms on Multiple Driving Factors.FRONTIERS IN EARTH SCIENCE,9,12.
MLA Liu, Chengjian,et al."Time-Lag Effect: River Algal Blooms on Multiple Driving Factors".FRONTIERS IN EARTH SCIENCE 9(2022):12.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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