Comparison images showing the Halong Glacier in Amne Machin Mountain, Qinghai, in 1981, 2005 and 2018.
The glacier is situated within Sanjiangyuan nature reserve, at the headwaters of the Yellow River.
Halong glacier is 1200 meters shorter than it was just 30 years ago. Between 1987 and 2006, the glacier retreated 32,000 m2 per year, and between 2006-2017, the rate of retreat nearly doubled, to 72,000 m2 per year. In 2017 the total area measured 19.73 k2. 

青海阿尼玛卿哈龙冰川对比图
受气候变化全球升温的影响，自20世纪90年代以来中国冰川呈现出全面、加速退缩的趋势。未来几十年，占中国冰川总数80%以上的面积小于1平方公里的小冰川将面临消失风险，中国冰川数量将急剧减少。
2018年夏季，绿色和平“中国冰川与气候变化影响项目”与甘肃省科学院地质自然灾害防治研究所合作，前往中国西部的几条冰川进行实地调研，考察发现气候变化影响下中国西部冰川加速消融趋势明显。冰川消融将进一步加剧的下游的水资源危机，短期内冰川灾害将频频发生…中国冰川已面临失稳危机！