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学科主题: Environmental Sciences
题名: EXPERIMENTS ON AQUATIC ECOSYSTEM REGIME SHIFT IN ENCLOSURES NEAR LAKE DIANCHI, CHINA
作者: Wang, Yingcai1, 2; Wang, Zhen1, 2; Chang, Fengyi1, 2; Li, Yanhui1, 2; Su, Yanping1, 2; Lu, Lanlan1, 2; Shen, Yinwu1; Li, Genbao1; Li, Dunhai1; Liu, Yongding1
通讯作者: Liu, YD, Chinese Acad Sci, Inst Hydrobiol, 7 S E Lake Rd, Wuhan 430072, Peoples R China
关键词: regime shift ; alternative stable states ; eutrophication
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2009
卷: 18, 期:3, 页:294-303
收录类别: SCI
文章类型: Article
部门归属: [Wang, Yingcai; Wang, Zhen; Chang, Fengyi; Li, Yanhui; Su, Yanping; Lu, Lanlan; Shen, Yinwu; Li, Genbao; Li, Dunhai; Liu, Yongding] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Wang, Yingcai; Wang, Zhen; Chang, Fengyi; Li, Yanhui; Su, Yanping; Lu, Lanlan] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Chinese Academy of Sciences [kzcx2-yw-426]; 973 project [2008CB418002]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: To discover how a lake converts from a turbid state to clean state, and what drives this process, we constructed controlled enclosure ecosystems and used the ecological remediation method to force ecosystems to convert from the turbid state to the clean state. Our results show that the driving forces include temperature., macrophyte, silver carp and mussel, which form a combined force to drive the controlled ecosystem to switch. There is a threshold existing in treated enclosure ecosystem during the conversion from turbid to clean state. When TP <0.09 mg.L-1, Chl-a <0.036 mg.L-1, transparency >62 cm, TN <2.15 mg.L-1, CODMn <13.7 mg.L-1, tubidity <10, and the number of algal cells <10(6) cells.L-1, the treated ecosystem changes sharply from turbid to clean state. The conversion process can be divided into three phases: turbid state, clean-turbid transitional state as well as clean state, and described with the power function Y = a*X-b (where Y is water parameter, X is time, a and b are constants), which indicates that the shift in the enclosure ecosystem from turbid to clean state is discontinuous.
英文摘要: To discover how a lake converts from a turbid state to clean state, and what drives this process, we constructed controlled enclosure ecosystems and used the ecological remediation method to force ecosystems to convert from the turbid state to the clean state. Our results show that the driving forces include temperature., macrophyte, silver carp and mussel, which form a combined force to drive the controlled ecosystem to switch. There is a threshold existing in treated enclosure ecosystem during the conversion from turbid to clean state. When TP <0.09 mg.L(-1), Chl-a <0.036 mg.L(-1), transparency >62 cm, TN <2.15 mg.L(-1), COD(Mn) <13.7 mg.L(-1), tubidity <10, and the number of algal cells <10(6) cells.L(-1), the treated ecosystem changes sharply from turbid to clean state. The conversion process can be divided into three phases: turbid state, clean-turbid transitional state as well as clean state, and described with the power function Y = a*X(b) (where Y is water parameter, X is time, a and b are constants), which indicates that the shift in the enclosure ecosystem from turbid to clean state is discontinuous.
关键词[WOS]: SHALLOW LAKES ; CLEAR WATER ; RESTORATION ; PHOSPHORUS ; NUTRIENT ; EUTROPHICATION ; PHYTOPLANKTON ; MECHANISMS ; VEGETATION ; SEDIMENT
语种: 英语
WOS记录号: WOS:000264461800009
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7814
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Wang, Yingcai; Wang, Zhen; Chang, Fengyi; Li, Yanhui; Su, Yanping; Lu, Lanlan; Shen, Yinwu; Li, Genbao; Li, Dunhai; Liu, Yongding.EXPERIMENTS ON AQUATIC ECOSYSTEM REGIME SHIFT IN ENCLOSURES NEAR LAKE DIANCHI, CHINA,FRESENIUS ENVIRONMENTAL BULLETIN,2009,18(3):294-303
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