安庆市潜在淹没区不透水面数据集(2005）

安庆市2005年潜在淹没区不透水面数据集。该数据基于安庆水文站警戒水位，利用SRTM DEM数据，在面状数字高程模型上提取安庆市等于及小于警戒水位线的空间范围。同时，结合长江干流水系分布数据，排除小于警戒水位范围内的不连通区域，利用流域范围，得到安庆市潜在淹没区范围。在安庆市潜在淹没范围基础上，利用长江流域土地利用现状遥感监测数据2005年数据，提取安庆市区域属于不透水面的范围。提取土地利用数据中心城镇建设用地、农村居民地与其他建设用地范围作为不透水面。

Impervious Surface Dataset of Potential Flooded Areas in Anqing City (2005). This dataset is developed based on the warning water level of Anqing Hydrological Station. Using SRTM DEM data, the spatial extent within Anqing City where the elevation is equal to or lower than the warning water level is extracted from the areal digital elevation model. Meanwhile, combined with the distribution data of the main stream of the Yangtze River, disconnected regions within the range equal to or lower than the warning water level are excluded, and the potential flooded area extent of Anqing City is determined using the watershed boundary. Based on the obtained potential flooded area extent of Anqing City, the impervious surface extent within Anqing City is extracted by utilizing the 2005 remote sensing monitoring data of land use status in the Yangtze River Basin. Specifically, the areas of urban construction land, rural residential areas and other construction land in the land use dataset are extracted as impervious surfaces.