Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications
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 endu...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2016-12-01
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| Series: | Hydrology Research |
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| Online Access: | http://hr.iwaponline.com/content/47/S1/40 |
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| author | Mengfan Li Qi Zhang Yunliang Li Jing Yao Zhiqiang Tan |
| author_facet | Mengfan Li Qi Zhang Yunliang Li Jing Yao Zhiqiang Tan |
| author_sort | Mengfan Li |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-12T04:41:35Z |
| format | Article |
| id | doaj.art-654395db8159407c9fc87f4f05028ef0 |
| institution | Directory Open Access Journal |
| issn | 1998-9563 2224-7955 |
| language | English |
| last_indexed | 2024-12-12T04:41:35Z |
| publishDate | 2016-12-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Hydrology Research |
| spelling | doaj.art-654395db8159407c9fc87f4f05028ef02022-12-22T00:37:48ZengIWA PublishingHydrology Research1998-95632224-79552016-12-0147S1405010.2166/nh.2016.308308Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implicationsMengfan Li0Qi Zhang1Yunliang Li2Jing Yao3Zhiqiang Tan4 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 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 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 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 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 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.http://hr.iwaponline.com/content/47/S1/40dry seasonshydrodynamic modellake arealake area–lake level relationpoyang lake |
| spellingShingle | Mengfan Li Qi Zhang Yunliang Li Jing Yao Zhiqiang Tan Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications Hydrology Research dry seasons hydrodynamic model lake area lake area–lake level relation poyang lake |
| title | Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications |
| title_full | Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications |
| title_fullStr | Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications |
| title_full_unstemmed | Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications |
| title_short | Inter-annual variations of Poyang Lake area during dry seasons: characteristics and implications |
| title_sort | inter annual variations of poyang lake area during dry seasons characteristics and implications |
| topic | dry seasons hydrodynamic model lake area lake area–lake level relation poyang lake |
| url | http://hr.iwaponline.com/content/47/S1/40 |
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