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[1]TIAN Biqing,WU Changxue,MU Xingmin,et al.Analysis on the Characteristics and Driving Factors of Water Area Change in Poyang Lake During Flood Season Under Long Time Series[J].Research of Soil and Water Conservation,2021,28(04):212-217.

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Analysis on the Characteristics and Driving Factors of Water Area Change in Poyang Lake During Flood Season Under Long Time Series

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 04 Page number: 212-217 Column: Public date: 2021-08-10

Title:: Analysis on the Characteristics and Driving Factors of Water Area Change in Poyang Lake During Flood Season Under Long Time Series

Author(s):: TIAN Biqing¹, WU Changxue¹, MU Xingmin^1,2, GAO Peng^1,2, ZHAO Guangju^1,2, YIN Diansheng³; (1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, CAS&MWR, Yangling, Shaanxi 712100, China; 3.Zhongshui Huaihe Planning and Design Research Co., Ltd., Hefei 230601, China)

Keywords:: water bodies of Poyang Lake during flood season; Landsat; runoff; land use

CLC:: TP79;P343.3

DOI:: -

Abstract:: As the largest freshwater lake in China, Poyang Lake's water area change and its driving factors have attracted attention from all sectors of society. In order to explore the influencing factors on water area change in Poyang Lake during flood season, the remote sensing image data of Poyang Lake Basin during flood season from 1977 to 2017, the measured monthly flow in flood season from six control hydrological stations in the same period and the land use data in the basin from 1980 to 2015 were analyzed. Mann-Kendall trend and mutation test and mutation test methods were used to analyze the characteristics of water body area, runoff and land use structure change in the Poyang Lake Basin during flood season. The results showed that: the water area of Poyang Lake in flood season showed a decreasing trend, and the abrupt change occurred in 2005; the net runoff of the lake increased significantly year by year in flood season, and the mutation year was 1990; in the 1990s, the area of land used for industrial construction in urban and rural areas increased greatly, while the area of unused land decreased greatly, leading to the increase of water consumption in the basin; the increase of net runoff from the lake in flood season was one of the main reasons for the decreasing trend of lake area in flood season. The implementation of ecological projects such as returning farmland to lake in the basin is beneficial to alleviate the decreasing trend of lake water area in flood season. Human activities such as water conservancy projects in the upper reaches of the Yangtze River and urbanization development in the basin are the main driving factors for the decrease of water area of Poyang Lake in flood season.

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Last Update: 2021-08-20