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Extinction risk from climate change

机译:气候变化带来的灭绝风险

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Climate change over the past ~30 years has produced numerous shifts in the distributions and abundances of species and has been implicated in one species-level extinction. Using projections of species' distributions for future climate scenarios, we assess extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface. Exploring three approaches in which the estimated probability of extinction shows a power-law relationship with geographical range size, we predict, on the basis of mid-range climate-warming scenarios for 2050, that 15-37% of species in our sample of regions and taxa will be 'committed to extinction'. When the average of the three methods and two dispersal scenarios is taken, minimal climate-warming scenarios produce lower projections of species committed to extinction (~18%) than mid-range (~24%) and maximum-change (~35%) scenarios. These estimates show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.
机译:在过去〜30年中,气候变化导致物种分布和丰富度发生了许多变化,并与一种物种灭绝有关。利用未来气候情景中物种分布的预测,我们评估了覆盖约20%地球陆地表面的样本区域的灭绝风险。探索三种估计的灭绝概率与地理范围大小呈幂律关系的方法,根据2050年的中期气候变暖情景,我们预测区域样本中物种的15-37%而且分类单元将“灭绝”。当采用三种方法和两种扩散情景的平均值时,最小的气候变暖情景产生的灭绝物种预测值(〜18%)低于中程物种(〜24%)和最大变化量(〜35%)。场景。这些估算表明,迅速实施减少温室气体排放的技术和固碳战略的重要性。

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