全球气候变暖正在对欧洲最高峰勃朗峰及其周边地区造成严重影响。阿尼尔·德·米达峰(Aiguille du Midi)的气温数据印证了这一趋势:1994年7月平均气温为1.6°C,而到2026年7月已升至3.3°C,创纪录新高1。伴随气温上升,永久冻土大幅消融导致冰川快速退缩,进而引发连锁反应——预计2026年夏季勃朗峰地区的岩石崩塌将达400次,约为20年前的10倍1。2022年被称为"灾难性年份",当年就发生了近300次岩石崩塌1。
冰川消融的影响已经波及整个阿尔卑斯山脉。意大利伦巴第地区的冰川自1991年以来失去了超过40%的表面积1。香蒙尼副市长斯特凡·博松表示:"从7月中旬开始,我们看到岩石崩塌增加,冰川退缩和融化导致许多区域难以进入或穿越"1。研究员卢多维克·拉瓦内尔进一步解释了这一现象的机制,指出"相当多的岩石面临不稳定的边缘,今天保持稳定仅因冰的存在,冰改变后我们看到今年有大量岩石崩塌"1。
气候变化的影响并非仅限于欧洲高山。尼泊尔8月26日喜马拉雅山洪灾由岩石和冰川垫脚崩塌引发,科学家初步评估认为气候变化起关键作用1,这进一步说明全球高山生态正面临来自气候变暖的严重威胁。
Accelerating glacier melt in the Alps is triggering a dramatic increase in rockfalls across Europe's highest peaks, with scientists linking the phenomenon directly to climate change. At Aiguille du Midi in the Mont Blanc region, average July temperatures have climbed from 1.6°C in 1994 to 3.3°C in 2026, marking a record high.1 The warming has destabilized mountainous terrain once held in place by permafrost, with rockfalls in the Mont Blanc area projected to reach 400 incidents in summer 2026—roughly ten times the frequency recorded two decades earlier.1 A particularly severe year in 2022 saw nearly 300 rockfalls in the region.1
The retreat of glaciers across the Alps underscores the broader scale of the crisis. In Italy's Lombardy region, glaciers have lost more than 40 percent of their surface area since 1991.1 The environmental toll extends beyond Europe; Nepal experienced devastating flooding on August 26 triggered by the collapse of rock and glacier-anchored sections, with scientists determining that climate change played a key role in the disaster.1
Local authorities and researchers are grappling with the accelerating danger. Chamonix deputy mayor Stephane Bosson remarked that "since mid-July we have seen an increase in rockfalls, with glacier retreat and melting making many areas difficult or impossible to access or cross."1 Researcher Ludovic Ravanel emphasized the underlying mechanism, stating that "a considerable amount of rock faces instability at the margin—today they remain stable only because of ice present—once ice changes, we see a large volume of rockfalls as we have witnessed this year."1
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