九江市潜在淹没区不透水面数据集(2010）

九江市2010年潜在淹没区不透水面数据集。该数据基于九江水文站警戒水位，利用SRTM DEM数据，在面状数字高程模型上提取九江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，得到九江市潜在淹没区范围。在九江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2010年数据，提取九江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 Jiujiang City (2010). This dataset is developed based on the warning water level of Jiujiang Hydrological Station. Firstly, SRTM DEM data is used to extract the spatial extent of areas in Jiujiang City equal to or lower than the warning water level from the planar digital elevation model. Then, combined with the distribution data of the Yangtze River main stem water system, disconnected regions within the area below the warning water level are excluded, and the potential flooded area extent of Jiujiang City is obtained using the watershed boundary. Based on the potential flooded area extent of Jiujiang City, the impervious surface area within the administrative region of Jiujiang City is extracted using the 2010 remote sensing monitoring data of current land use in the Yangtze River Basin. Specifically, the areas of urban construction land, rural residential areas and other construction lands in the land use dataset are taken as impervious surfaces.