Around a decade ago, experts feared that a new planetary wipeout of species was looming.
专家们在大约十年前就预料到新一阶段的全球性生物大灭绝即将到来。
Today, most agree that it is underway - but the new study suggests that the die-out is already ratcheting up a gear.
现在多数专家都一致认为生物灭绝已经开始,但是新的研究表明,生物灭绝已经加快了速度。
It provides much-needed data about the threat to wildlife, mapping the dwindling ranges and populations of 27,600 species. For 177 mammals, researchers combed through data covering the period 1900 to 2017.
研究中提供了威胁野生物种的重要数据,绘制出了27600种生物种类和数量下降的分布图。其中,研究人员专门针对177种哺乳动梳理出了1900年至2017年间的数据。
The mammal species that were monitored have lost at least a third of their original habitat, the researchers found.
研究人员发现,他们所观测的这些哺乳动物已经失去了至少三分之一的原始栖息地。
Forty percent of them - including rhinos, orangutans, gorillas and many big cats - are surviving on 20 percent or less of the land they once roamed.
包括犀牛、猩猩、大猩猩以及大型猫科动物等在内的40%的哺乳动物,现在的活动区域仅为它们原有栖息地的20%或者更小。
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