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- W2348072093 abstract "In this study,the time series of area changes of Poyang Lake during the period of 2000- 2011 are monitored based on Terra / MODIS 16-Day L3 global vegetation indices product( MOD13Q1) with 250m in pixel size,and on the spectral differences of water,vegetation and others in red and near infrared band. The results show:( 1) Suitable thresholds are selected for different seasons to discriminate the NDVI value of water body from vegetation and land. Validations of lake area derived from Landsat ETM+and lake level from gauge station are compared with the lake area from MODIS data,which indicates the methods used in this study perform well,with a correlation coefficient of 0. 95 and 0. 91,respectively;( 2) The seasonal variations are obvious for Poyang Lake area. The dry season is usually from October to March of the next year and wet season from April to September.The maximum water area is three times larger than the minimum area( ranging from 800 to 3200 km2.( 3) The interannual changes of Poyang Lake are mainly affected by climate factors. To a certain degree,the Three Gorges Reservoir could bring about the decease of Poyang Lake area in the dry season." @default.
- W2348072093 created "2016-06-24" @default.
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- W2348072093 date "2013-01-01" @default.
- W2348072093 modified "2023-09-28" @default.
- W2348072093 title "Monitoring Area Changes of Poyang Lake by MODIS Data( 2000-2011)" @default.
- W2348072093 hasPublicationYear "2013" @default.
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