祁连山地区冰川边界产品（1980-2015）

本数据为祁连山地区1980-2015年冰川分布产品。采用经典波段比值法和人工修正的方法提取。原始基础数据为1978-2018年祁连山全境的Landsat系列影像。参考数据为谷歌影像和天地图影像。产品以shp文件格式存储，包含坐标系、冰川ID、冰川面积等属性。产品分为8期，时间分辨率为5年，空间分辨率为30米，边界精度在30米（一个像元）左右。该数据直观地反映了祁连山冰川在近35年内的分布变化，可用于冰川物质平衡变化定量估计、冰川变化对流域径流量影响定量估计等研究。

This dataset is a glacier distribution product for the Qilian Mountains region spanning 1980 to 2015. Glacier distribution was extracted using the classic band ratio method combined with manual correction. The original foundational data are Landsat series images covering the entire Qilian Mountains from 1978 to 2018, while the reference datasets include Google satellite imagery and Tianditu imagery. The product is stored in SHP file format, containing attributes such as coordinate system, glacier ID, and glacier area. It is divided into 8 temporal phases, with a temporal resolution of 5 years, a spatial resolution of 30 meters, and a boundary accuracy of approximately 30 meters (equivalent to one pixel). This dataset intuitively reflects the distribution changes of glaciers in the Qilian Mountains over the past 35 years, and can be applied to research including quantitative estimation of glacier mass balance variations and the quantitative assessment of the impact of glacier changes on basin runoff.