Atmospheric CO(2) forcing on Mediterranean biomes during the past 500 kyrs.

Atmospheric CO(2) forcing on Mediterranean biomes during the past 500 kyrs.
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在过去的500 kyrs中,大气CO(2)强迫地中海生物群落。

DOI:
10.1038/s41467-023-37388-x
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发表时间:
2023-03-25
影响因子:
16.6
通讯作者:
Pross, Joerg
Pross, Joerg
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Koutsodendris, Andreas;Dakos, Vasilis;Fletcher, William J.;Knipping, Maria;Kotthoff, Ulrich;Milner, Alice M.;Mueller, Ulrich C.;Kaboth-Bahr, Stefanie;Kern, Oliver A.;Kolb, Laurin;Vakhrameeva, Polina;Wulf, Sabine;Christanis, Kimon;Schmiedl, Gerhard;Pross, Joerg

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人们日益关切地中海森林在人为气候变化造成的预计近期干旱下的生存问题。在这里,我们根据希腊Tenaghi Philippon钻孔岩芯的连续花粉和(亚)百年尺度分辨率的地球化学记录,确定了过去500万年期间整个气候边界条件下地中海森林的恢复力。使用收敛交叉映射,我们提供了经验证实,全球大气中的二氧化碳(CO2)可能会影响地中海植被通过强迫水分供应。我们的分析记录了两个稳定的植被制度,在过去的四个冰川-间冰期周期实现了广泛的CO2和水分水平,从森林到草原生物群系的突然转变时,发生在降水的阈值被越过。我们的方法强调,在不久的将来,CO2驱动的水分减少可能会承担即将发生的风险,突然植被状况的变化,促使森林损失在地中海地区。来自东南欧的50万年长的植被变化记录表明,当降水量减少到阈值极限以下时,森林的恢复能力就会丧失,并突出表明地中海森林对近期气候变化的脆弱性
There is growing concern on the survival of Mediterranean forests under the projected near-future droughts as a result of anthropogenic climate change. Here we determine the resilience of Mediterranean forests across the entire range of climatic boundary conditions realized during the past 500 kyrs based on continuous pollen and geochemical records of (sub)centennial-scale resolution from drillcores from Tenaghi Philippon, Greece. Using convergent cross-mapping we provide empirical confirmation that global atmospheric carbon dioxide (CO2) may affect Mediterranean vegetation through forcing on moisture availability. Our analysis documents two stable vegetation regimes across the wide range of CO2 and moisture levels realized during the past four glacial-interglacial cycles, with abrupt shifts from forest to steppe biomes occurring when a threshold in precipitation is crossed. Our approach highlights that a CO2-driven moisture decrease in the near future may bear an impending risk for abrupt vegetation regime shifts prompting forest loss in the Mediterranean region. A 500 kyr long record of vegetation change from SE Europe demonstrates that forest resilience is lost when precipitation decreases below a threshold limit, and highlights the vulnerability of Mediterranean forests to near-future climate change
DOI: 10.1038/nature06111
发表时间: 2007-09-13
期刊: NATURE
影响因子: 64.8
作者:
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DOI: 10.1007/bf02245909
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期刊: ARCHIV FUR METEOROLOGIE GEOPHYSIK UND BIOKLIMATOLOGIE SERIE B-KLIMATOLOGIE UMWELTMETEOROLOGIE STRAHLUNGSFORSCHUNG
影响因子: --
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发表时间: 2001-11-01
期刊: ENVIRONMENTAL GEOLOGY
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