ZhaoFangMiaoEtAl2005

Référence

Zhao, S., Fang, J., Miao, S., Gu, B., Tao, S., Peng, C., Tang, Z. (2005) The 7-decade degradation of a large freshwater lake in Central Yangtze River, China. Environmental Science and Technology, 39(2):431-436. (Scopus )

Résumé

Freshwater lakes store water for human use and agricultural irrigation and provide habitats for aquatic fauna and flora. However, a number of these lakes have been degraded by human activities at a rapid rate. Here, we used historical land cover information and remotely sensed data to explore a 7-decade (between 1930s and 1998) shrinkage and fragmentation of Dongting Lake, the second largest freshwater lake in China, located in the drainage basin of Central Yangtze River. The water surface area of Dongting Lake decreased by 49.2%, from 4955 km2 in the 1930s to 2518 km2 in 1998, with an average decrease rate of 38.1 km2/yr in the past 7 decades. The lake was also fragmented, as indicated by a decreasing mean patch size from 4.2 km 2 in the 1930s to 1.7 km2 in 1998. The degradation of the lake is largely attributed to a rapidly growing human population in the lake region that led to extensive impoldering. The degradation of the lake has resulted in negative ecological consequences, such as frequent flooding, a decline of biodiversity, and extinction of some endemic species. Our results also suggest that lake restoration projects implemented in this region since the end of the 1990s will help to decrease the lake degradation.

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@ARTICLE { ZhaoFangMiaoEtAl2005,
    AUTHOR = { Zhao, S. and Fang, J. and Miao, S. and Gu, B. and Tao, S. and Peng, C. and Tang, Z. },
    TITLE = { The 7-decade degradation of a large freshwater lake in Central Yangtze River, China },
    JOURNAL = { Environmental Science and Technology },
    YEAR = { 2005 },
    VOLUME = { 39 },
    PAGES = { 431-436 },
    NUMBER = { 2 },
    ABSTRACT = { Freshwater lakes store water for human use and agricultural irrigation and provide habitats for aquatic fauna and flora. However, a number of these lakes have been degraded by human activities at a rapid rate. Here, we used historical land cover information and remotely sensed data to explore a 7-decade (between 1930s and 1998) shrinkage and fragmentation of Dongting Lake, the second largest freshwater lake in China, located in the drainage basin of Central Yangtze River. The water surface area of Dongting Lake decreased by 49.2%, from 4955 km2 in the 1930s to 2518 km2 in 1998, with an average decrease rate of 38.1 km2/yr in the past 7 decades. The lake was also fragmented, as indicated by a decreasing mean patch size from 4.2 km 2 in the 1930s to 1.7 km2 in 1998. The degradation of the lake is largely attributed to a rapidly growing human population in the lake region that led to extensive impoldering. The degradation of the lake has resulted in negative ecological consequences, such as frequent flooding, a decline of biodiversity, and extinction of some endemic species. Our results also suggest that lake restoration projects implemented in this region since the end of the 1990s will help to decrease the lake degradation. },
    COMMENT = { Cited By (since 1996): 13 Export Date: 14 May 2012 Source: Scopus CODEN: ESTHA doi: 10.1021/es0490875 },
    ISSN = { 0013936X (ISSN) },
    KEYWORDS = { Agriculture, Degradation, Ecology, Irrigation, Land use, Project management, Rivers, Freshwater lakes, Human population, Lake degradation, Patch size, Lakes, fresh water, degradation, human activity, lacustrine environment, land use change, surface area, aquatic fauna, aquatic flora, article, biodiversity, China, ecosystem restoration, flooding, irrigation (agriculture), lake, species extinction, Animals, China, Conservation of Natural Resources, Ecology, Environmental Monitoring, Fresh Water, Humans, Natural Disasters, Population Dynamics, Water Pollutants, Water Supply, Agriculture, Degradation, Ecology, Irrigation, Lakes, Land Use, Rivers, Asia, China, Eastern Hemisphere, Eurasia, Far East, World, Yangtze River },
    OWNER = { Luc },
    TIMESTAMP = { 2012.05.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-12344338254&partnerID=40&md5=d4b7e0fb7d88e4c53c09e856cbb7abd3 },
}

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