仅事实
斯瓦尔巴极地熊在海冰快速减少中依然繁荣
Summary
一项最新研究显示，尽管海冰显著减少，挪威斯瓦尔巴地区的北极熊体况有所改善，表明其对环境变化具有适应能力。
挪威斯瓦尔巴群岛的北极熊在过去二十年中体况有所改善，尽管该地区经历了北极最快的海冰减少之一。发表在《科学报告》上的一项研究分析了1992年至2019年间捕获的770只成年北极熊的数据，显示其体况指数在2000年后有所上升，并自此保持稳定。
研究人员认为，北极熊的韧性可能归因于多个因素，包括更有效地捕猎集中分布的海豹种群，适应捕食胡须海豹、驯鹿、鸟类和鲸鱼尸体等替代猎物，以及在短暂的觅食期内积累必要的脂肪储备的能力。
巴伦支海的北极熊种群估计约有3000只，自1973年以来已被禁止猎捕。尽管该地区北极熊的健康状况与其他地区下降的种群形成对比，科学家们仍警告称，这种稳定可能是暂时的，因为持续的气候变化正不断减少海冰栖息地。
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A study published in *Scientific Reports* analyzed data from 770 adult bears captured between 1992 and 2019, revealing that their body condition index increased after 2000 and has since stabilized.
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Researchers suggest that the bears' resilience may be due to several factors, including more efficient hunting of concentrated seal populations, adaptation to alternative prey such as bearded seals, reindeer, birds, and whale carcasses, and the ability to build essential fat reserves during a short feeding period.
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The Barents Sea polar bear population, estimated at around 3,000 individuals, has been protected from hunting since 1973.
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