北极狐、白鼬的一身白毛非常美丽,但这些白毛并不是为了好看,而是为了融入环境、躲避敌人的攻击。然而,近年来由于气候变暖,冰雪覆盖期缩短,本应和冰雪融为一体的白毛反而在无雪的暖冬变得格外显眼,更容易被捕食者发觉,白毛动物数量也因此急剧下降。科学家警告说,未来白毛动物可能会彻底消失。
White-furred animals are in danger of dying out because climate change is causing a fall in snow cover, leaving them exposed and vulnerable, a new study suggests.
一项新研究指出,白毛动物正面临灭绝的危险,因为气候变化导致冰雪覆盖范围减少,从而让白毛动物难以藏身、易受攻击。
Scientists in Poland have been following the worrying case of the white-coated weasel, which sheds its tawny covering in the winter for a milky coat allowing it to blend effortlessly into its icy environment.
波兰的科学家们一直在跟踪调查白鼬这种令人担忧的状况。白鼬在冬天会褪去黄褐色的皮毛,长出雪白皮毛,以便轻松地融入冰雪环境中。
But researchers have discovered that between 1997 and 2007 the number of days with permanent snow cover in Białowieża Forest, Poland, halved, from 80 to 40.
但是研究人员发现,1997年至2007年间,波兰比亚沃维耶扎原始森林被长期冰雪覆盖的时间从80天缩短到了40天。
【气候变化惹的祸:白毛动物恐将灭绝】相关文章:
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