美国西部君主蝴蝶数量猛跌至2 000以下,由于生境损失、气候变化和杀虫剂,濒临灭绝。 Western U.S. monarch butterfly numbers plummet to under 2,000, threatening extinction due to habitat loss, climate change, and pesticides.

美国西部的王冠蝴蝶数量急剧下降,最近的数字显示,它们间歇地点的蝴蝶数量比过去几十年的数万只少了2 000只。 Monarch butterfly populations in the western U.S. have declined sharply, with recent counts showing fewer than 2,000 butterflies in their overwintering sites—down from tens of thousands in past decades. 科学家将这种下降归因于生境丧失、气候变化和杀虫剂的使用,并警告说这些物种在没有紧急养护努力的情况下面临灭绝。 Scientists attribute the drop to habitat loss, climate change, and pesticide use, warning that the species faces extinction without urgent conservation efforts. 衰退标志着更广泛的生态危难,并突出表明需要加强环境保护。 The decline signals broader ecological distress and underscores the need for stronger environmental protections.