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2025年9月11日，瑞士苏黎世联邦理工学院团队发表于《Science》的全球评估提醒我们：判断森林状况，关键不只是“有多少块、面积多大”，而是这些森林能不能彼此连起来、聚在一起。研究用30 m分辨率的Landsat（美国“陆地卫星计划”）数据，按5~40 km不同尺度重新计算2000—2020年的森林变化。结果显示：如果按“连通性”（CFI）看，全球51%~67% 的森林实际上变得更破碎，热带地区更高，达58%~80%；按“聚集性”（AFI）评估，结论相近。相反，只看传统的结构指标（SFI），只有30%~35% 显示恶化，个别地方甚至会“看起来更完整”，产生误判。

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2025年9月11日，瑞士苏黎世联邦理工学院团队发表于《Science》的全球评估提醒我们：判断森林状况，关键不只是“有多少块、面积多大”，而是这些森林能不能彼此连起来、聚在一起。研究用30 m分辨率的Landsat（美国“陆地卫星计划”）数据，按5~40 km不同尺度重新计算2000—2020年的森林变化。结果显示：如果按“连通性”（CFI）看，全球51%~67% 的森林实际上变得更破碎，热带地区更高，达58%~80%；按“聚集性”（AFI）评估，结论相近。相反，只看传统的结构指标（SFI），只有30%~35% 显示恶化，个别地方甚至会“看起来更完整”，产生误判。

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（图片来源：thenewslens）

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