黄土高原典型样区-安塞样区30米分辨率植被覆盖度数据集（2005年）

该数据集为2005年黄土高原典型样区-安塞样区30米分辨率植被覆盖度数据集，包含样植被盖度、NDVI、SRTM　３个数据实体。样区设计为1个1:5万标准图幅（经差15′、纬差10′，面积大约410km2），地理坐标，分辨率为1 arc。空间分辨率为30米，数据为栅格格式，数据量10MB，投影为WGS_84。通过对下载的样区遥感影像数据进行预处理，进而计算该区域NDVI值，利用像元二分模型计算植被覆盖度。坐标转换为地理坐标后用精确范围切割成矩形数据块。

This dataset is a 30-meter resolution vegetation coverage dataset for the typical Ansai sample area on the Loess Plateau, developed in 2005. It contains three core data entities: vegetation coverage, NDVI, and SRTM. The sample area is designed as a 1:50000 standard map sheet, with a longitude span of 15 arcminutes, latitude span of 10 arcminutes, and an area of approximately 410 km². It uses a geographic coordinate system with a 1 arc resolution, while the spatial resolution of the dataset is 30 meters. The data is stored in raster format, with a total data volume of 10 MB, and adopts the WGS_84 projection. NDVI values of the region were calculated after preprocessing the downloaded remote sensing image data of the sample area, and vegetation coverage was further estimated using the dimidiate pixel model. After coordinate conversion to the geographic coordinate system, the data was clipped into rectangular data blocks with precise boundaries.