我国在北极冰区首次实现载人深潜

Core Viewpoint - The successful return of the "Xuelong 2" icebreaker marks a significant advancement in China's deep-sea exploration capabilities, particularly in the Arctic region, highlighting the country's commitment to scientific research in extreme environments [1] Group 1: Arctic Scientific Expedition - The 15th Arctic scientific expedition organized by the Ministry of Natural Resources involved four vessels: "Xuelong 2," "Jidi," "Shenhai 1," and "Tansuo 3," making it the largest Arctic scientific investigation conducted by China [1] - The expedition facilitated the successful deep dive of the "Jiaolong" manned submersible in the Arctic ice zone, representing China's first manned deep-sea dive in this region [1] Group 2: Research Findings - Preliminary research indicates significant variations in benthic organism density, biodiversity, and individual size across spatial ranges of tens to hundreds of kilometers in certain Arctic sea areas [1] - These findings provide strong support for understanding the spatial distribution patterns of polar deep-sea benthic organisms and assessing the impact of climate change on deep-sea ecosystems [1]