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Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications

Mengfan Li, Qi Zhang, Yunliang Li, Jing Yao, Zhiqiang Tan
Available Online 30 August 2016, nh2016308; DOI: 10.2166/nh.2016.308
Mengfan Li
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China E-mail: qzhang@niglas.ac.cnUniversity of Chinese Academy of Sciences, No. 19 Yuquan Road, Beijing 100049, China
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Qi Zhang
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China E-mail: qzhang@niglas.ac.cn
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Yunliang Li
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China E-mail: qzhang@niglas.ac.cn
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Jing Yao
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China E-mail: qzhang@niglas.ac.cn
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Zhiqiang Tan
Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China E-mail: qzhang@niglas.ac.cn
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Abstract

Variations in a lake area constitute an important indicator of the modifications of the lake hydrology. This paper explores the inter-annual variations of the Poyang Lake area during the dry seasons occurring within the 1961 to 2010 period and further quantifies the severity of dryness recently endured during the 2000s. A physically based hydrodynamic model of Poyang Lake established the relation between the lake area and lake level. The lake area was calculated using the observed lake water level. Results indicated the average lake area in the dry seasons was 1,015 km2. There was a considerable inter-annual variation of the minimum lake area that varied from 702.8 km2 to 1,259.7 km2. Poyang Lake experienced the most severe dryness in the 2000s, resulting in an average lake area during 2001 to 2010 of 124 km2 less than that of the preceding period. During the dry seasons, the catchment of the river discharge is likely the primary cause of the changes in lake area. This study evaluated the inter-annual variations of the Poyang Lake over a period of 50 years. Our results may provide support for an integrated management of the lake-catchment system, securing the water supply.

  • dry seasons
  • hydrodynamic model
  • lake area
  • lake area–lake level relation
  • Poyang Lake
  • First received 16 April 2016.
  • Accepted in revised form 14 July 2016.
  • © 2016 The Authors

This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).

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Hydrology Research: 49 (2)
  Volume 49,issue 2

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Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications
Mengfan Li, Qi Zhang, Yunliang Li, Jing Yao, Zhiqiang Tan
Hydrology Research Aug 2016, nh2016308; DOI: 10.2166/nh.2016.308
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Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications
Mengfan Li, Qi Zhang, Yunliang Li, Jing Yao, Zhiqiang Tan
Hydrology Research Aug 2016, nh2016308; DOI: 10.2166/nh.2016.308

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Keywords

dry seasons
hydrodynamic model
lake area
lake area–lake level relation
Poyang Lake
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