宜昌市潜在淹没区不透水面数据集(2000）

宜昌市2000年潜在淹没区不透水面数据集。该数据基于宜昌水文站警戒水位，利用SRTM DEM数据，在面状数字高程模型上提取宜昌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，得到宜昌市潜在淹没区范围。在宜昌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2000年数据，提取宜昌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 Yichang City in 2000. This dataset is developed based on the warning water level of Yichang Hydrological Station, using SRTM DEM data to extract the spatial extent of areas in Yichang City equal to or lower than the warning water level from the planar digital elevation model. Meanwhile, combined with the distribution data of the Yangtze River main stem water system, disconnected areas within the range equal to or lower than the warning water level are excluded, and the basin scope is used to obtain the potential flooded area extent of Yichang City. Based on the potential flooded area extent of Yichang City, the impervious surface area within Yichang City is extracted using the 2000 remote sensing monitoring data of current land use status in the Yangtze River Basin. The areas of urban construction land, rural residential areas and other construction land in the land use data are extracted as impervious surfaces.