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Two-Decade Reconstruction of Algal Blooms in China’s Lake Taihu
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
Ecosystem Dynamics and Global Ecology (EDGE) Laboratory, School of Forestry and Wildlife Sciences, Auburn University, Auburn, Al, 36849, USA.
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
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2009 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 43, no 10, p. 3522-3528Article in journal (Refereed) Published
Abstract [en]

The algal blooming in the inland lakes has become a critically important issue for its impacts not only on local natural and social environments, but also on global human community. However, the occurrences of blooming on larger spatial scale and longer time scale have rarely been studied. As the third largest freshwater lake in China, Lake Taihu has drawn increasing attention from both public and scientific communities concerning its degradation. Using available satellite images, we reconstructed the spatial and temporal patterns of algal blooms in Lake Taihu through the past two decades. The blooming characteristics over the past two decades were examined with the dynamic of initial blooming date being highlighted. The initial blooming dates were gradually becoming later and later from 1987 to 1997. Since 1998, however, the initial blooming date came earlier and earlier year by year, with approximately 11.42 days advancement per year. From 1987 to 2007, the annual duration of algal blooms lengthened year by year, in line with the substantial increases in the occurrences of algal blooms in spring and summer months. The algal blooms usually occur in northern bays and spread to center and south parts of Lake Taihu. The increases in previous winter’s mean daily minimum temperature partially contributed to the earlier blooming onset. However, human activities, expressed as total gross domestic product (GDP) and population, outweighed the climatic contribution on the initial blooming date and blooming duration. This study may provide insights for the policy makers who try to curb the algal blooming and improve the water quality of inland freshwater lakes.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2009. Vol. 43, no 10, p. 3522-3528
National Category
Ecology
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URN: urn:nbn:se:ltu:diva-90677DOI: 10.1021/es8031852ISI: 000266046700022PubMedID: 19544849Scopus ID: 2-s2.0-66249091589OAI: oai:DiVA.org:ltu-90677DiVA, id: diva2:1658939
Note

Funder: Chinese Academy of Sciences (grant no. 07YJ011001); the National Natural Science Foundation of China (grant nos. 40801137, 40871168); National Key Technology R&D program (grant no. 2007BAC26B01); the Knowledge Innovation Program of the Chinese Academy of Sciences (grant no. CXNIGLAS200807); NASA Interdisciplinary Science Program (gran tno. NNG04GM39C); NASA Land Use and Land Cover Change Program (grant no. NNX08AL73G)

Available from: 2022-05-18 Created: 2022-05-18 Last updated: 2022-05-18Bibliographically approved

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Hao, Jingyan

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