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冰川要“拍照存档”:60年7000条消失
Nan Fang Du Shi Bao· 2025-05-06 23:10
Core Points - The article discusses the first aerial survey of marine glaciers in Tibet, initiated by the Ministry of Natural Resources and the China Geological Survey, aimed at understanding the development and melting patterns of these glaciers [2][3][4] - The survey is conducted at the Renlongba Glacier, a significant marine glacier in Tibet, which is easily accessible and serves as a valuable resource for ecological research and geological exploration [3][4] - A comprehensive monitoring technology system integrating satellite remote sensing, helicopter aerial surveys, and ground investigations has been established to assess the glacier's extent, thickness, and changes [4][7] - The article highlights the rapid retreat of glaciers in China, with a reported overall reduction of approximately 26% in glacier area from the 1960s to 2020, and a significant acceleration in melting observed in recent years [8][10] - The glaciers in the Asian water tower region have experienced a 20% reduction in ice storage over the past 50 years, with projections indicating further significant losses by the end of the century under various climate scenarios [11][13] Group 1 - The first aerial survey of marine glaciers in Tibet aims to gather foundational data for natural resource management [2][4] - The Renlongba Glacier is chosen for its accessibility and ecological significance, allowing researchers to conduct detailed studies [3][4] - The survey employs a multi-faceted monitoring approach to accurately assess glacier conditions and changes [4][7] Group 2 - China's glaciers have shrunk by about 18% over the past 50 years, with a notable increase in melting rates in the last decade [8][10] - The Asian water tower glaciers are crucial for major rivers in Asia and have seen a 20% decrease in ice storage, with projections of further declines [11][13] - The melting glaciers pose risks of glacial lake outburst floods and other hazards, with significant implications for surrounding ecosystems and communities [14][15]