鄱阳湖和洞庭湖2000-2012年水域面积分布数据集

该数据集为应用MODIS遥感影像提取的鄱阳湖和洞庭湖水面的空间分布数据，时间范围为2000-2012年。数据为栅格格式的Tiff文件，UTM投影，分辨率为250m，单波段二值数据，无量纲，数值为（0,1），1代表水域，0代表非水域。受到云的影响，每年所含湖泊水域面积分布数据的日期和数量均不同，一般在每年30幅左右。文件名称为：区域 + 要素 + 时间（YYYYDDD），其中，区域代码有PY和DT两种，PY表示鄱阳湖，DT表示洞庭湖，要素用Inundation表示，“YYYYDDD”表示YYYY年第DDD天，如DT_Inundation_2001007.tif，代表2001年第7天（1月7日）洞庭湖的水面分布数据。该数据集中，鄱阳湖共457景，洞庭湖共360景，所有数据均可用ArcGIS软件直接读取。This dataset comprises spatial distribution data of water bodies in Poyang Lake and Dongting Lake, extracted via MODIS remote sensing imagery, covering the period from 2000 to 2012. The data are stored as raster TIFF files in UTM projection, with a spatial resolution of 250 meters. Each file is a single-band, dimensionless binary dataset with pixel values limited to 0 and 1, where 1 represents water bodies and 0 represents non-water areas. Affected by cloud cover, the acquisition dates and total number of valid lake water distribution datasets vary each year, typically amounting to around 30 scenes per year. The file naming convention follows the format: [Region] + [Feature] + [Time (YYYYDDD)]. There are two region codes: PY for Poyang Lake and DT for Dongting Lake. The feature is denoted by "Inundation", and "YYYYDDD" indicates the DDD-th day of the YYYY year. For example, DT_Inundation_2001007.tif corresponds to the water distribution data of Dongting Lake on January 7, the 7th day of 2001. In total, this dataset contains 457 scenes for Poyang Lake and 360 scenes for Dongting Lake. All data can be directly read using ArcGIS software.