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Article

Spatiotemporal Dynamics of Water Body Changes and Their Influencing Factors in the Seasonal Lakes of the Poyang Lake Region

by 1,†, 1,†, 1, 2,* and 3,*
1
Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
2
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
3
Natural Resources Development Center of Jiangxi Province, Nanchang 330025, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Jean-Luc Probst, Richard C. Smardon and Jianzhong Lu
Water 2021, 13(11), 1539; https://doi.org/10.3390/w13111539
Received: 29 March 2021 / Revised: 27 May 2021 / Accepted: 28 May 2021 / Published: 30 May 2021
(This article belongs to the Special Issue Water and the Ecosphere in the Anthropocene)
Poyang Lake is the largest freshwater lake in China, an internationally important wetland and the largest migratory bird habitat in Asia. There are numerous seasonal lakes in the Poyang Lake region, and these lakes create a complex and diverse wetland landscape and serve as the main activity area for migratory birds. Seasonal lakes have significant effects on hydrological and ecological processes and are highly susceptible to various changes, but research on seasonal lakes is relatively limited. Based on long-term remote sensing images, this study analyzed the spatiotemporal variation characteristics of seasonal lakes and their influencing factors and ecological effects. The conclusions were as follows: the average water area of seasonal lakes showed a unimodal change during the year, reaching a maximum in July and a minimum in January. The interannual water area fluctuated greatly, and the overall water area showed a small downward trend. In terms of spatial variation, the seasonal lakes were connected with the main lake in the wet season and separated from the main lake in the dry season. Among the natural factors, the influences of temperature, evaporation, and rainfall on the water area of the seasonal lakes were successively reduced. In addition, the incoming water from the Yangtze River had an important influence. Among the human factors, the traditional fishing method “enclosing sublakes in autumn” had the greatest impact on the water area in a specific period, followed by the indirect impact of the Three Gorges Project. View Full-Text
Keywords: seasonal lakes; NDWI; long time series; temporal and spatial changes; ecological impact seasonal lakes; NDWI; long time series; temporal and spatial changes; ecological impact
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MDPI and ACS Style

Liu, H.; Yuan, H.; Wang, S.; Zheng, L.; Liao, M. Spatiotemporal Dynamics of Water Body Changes and Their Influencing Factors in the Seasonal Lakes of the Poyang Lake Region. Water 2021, 13, 1539. https://doi.org/10.3390/w13111539

AMA Style

Liu H, Yuan H, Wang S, Zheng L, Liao M. Spatiotemporal Dynamics of Water Body Changes and Their Influencing Factors in the Seasonal Lakes of the Poyang Lake Region. Water. 2021; 13(11):1539. https://doi.org/10.3390/w13111539

Chicago/Turabian Style

Liu, Hai, Hongmeng Yuan, Shimian Wang, Liang Zheng, and Ming Liao. 2021. "Spatiotemporal Dynamics of Water Body Changes and Their Influencing Factors in the Seasonal Lakes of the Poyang Lake Region" Water 13, no. 11: 1539. https://doi.org/10.3390/w13111539

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