中国50米分辨率湖泊沉积物量数据集（1950s-2010s）

本数据集包含了中国东部、北方共11个省份119个湖泊沉积物的淤积量数据（1950年代以来），数据为栅格数据图层，其栅格value值代表湖泊底泥厚度。数据格式为tif，地理坐标系WGS_1984，投影为通用横轴墨卡托投影（Universal Transverse Mercator,UTM）,中国境内UTM投影带号为43-53，空间分辨率50米，数据量111MB。数据集共119幅栅格图像，主要通过地形图对比、仪器测量和样品采集分析数据构建。

This dataset contains sediment accumulation data of 119 lakes from 11 provinces in eastern and northern China (since the 1950s). The data are provided as raster layers, where the pixel value represents the thickness of lake bottom sediment. The data format is TIFF, with the geographic coordinate system WGS_1984 and the projection of Universal Transverse Mercator (UTM). The UTM zone numbers within China range from 43 to 53, with a spatial resolution of 50 meters, and the total data volume is 111 MB. The dataset comprises 119 raster images, which were primarily constructed through topographic map comparison, instrumental measurements, and analysis of sample collection data.