Spatiotemporal patterns of northern lake formation since the Last Glacial Maximum
Spatiotemporal patterns of northern lake formation since the Last Glacial Maximum
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DOI：
10.1016/j.quascirev.2020.106773
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发表时间：
2021-02
影响因子：
4
通讯作者：
L. Brosius;K. W. Anthony;C. Treat;J. Lenz;Miriam C. Jones;M. Bret-Harte;G. Grosse
中科院分区：
文献类型：
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作者：
L. Brosius;K. W. Anthony;C. Treat;J. Lenz;Miriam C. Jones;M. Bret-Harte;G. Grosse
北方中高纬度地区拥有地球上数量最多、面积最大的湖泊。这些地区的湖泊起源多种多样，但在很大程度上与冰川、永久冻土和泥炭地的历史有关。1207北方湖泊的起始记录的合成提供了一个模拟的快速水位变化响应气候变暖，其随后的衰减的物理和生物反馈机制。我们的汇编揭示了北方湖泊形成的两个高峰，分别是13,200年和10,400年前，都是在北大西洋气温迅速上升之后。将我们的研究结果在现有的古环境记录的背景下，我们认为，太阳辐射驱动的气候变化（温度和水平衡），导致冰川消融和永久冻土融化可能导致高利率的北方湖泊形成在最后一个冰消期。然而，进一步的景观发展和稳定大大降低了湖泊形成的速度，从10,000年前开始。这表明，温度本身可能无法控制未来的湖泊发展;相反，多种因素必须协调一致，使景观能够与湖泊面积的增加相对应。我们认为，陆地表面强烈地倾向于增加湖泊的形成是高度条件化的冰川作用。因此，本世纪的变暖不太可能像上一次冰消期那样迅速或广泛地形成湖泊。
The northern mid- to high-latitudes have the highest total number and area of lakes on Earth. Lake origins in these regions are diverse, but to a large extent coupled to glacial, permafrost, and peatland histories. The synthesis of 1207 northern lake initiation records presented here provides an analog for rapid landscape-level change in response to climate warming, and its subsequent attenuation by physical and biological feedback mechanisms. Our compilation reveals two peaks in northern lake formation, 13,200 and 10,400 years ago, both following rapid increases in North Atlantic air temperature. Placing our findings within the context of existing paleoenvironmental records, we suggest that solar insolation-driven changes in climate (temperature and water balance) that led to deglaciation and permafrost thaw likely contributed to high rates of northern lake formation during the last Deglacial period. However, further landscape development and stabilization dramatically reduced rates of lake formation beginning ∼10,000 years ago. This suggests that temperature alone may not control future lake development; rather, multiple factors must align to enable a landscape to respond with an increase in lake area. We propose that land surfaces strongly geared toward increased lake formation were highly conditioned by glaciation. Thus, it is unlikely that warming this century will cause lake formation as rapid or as widespread as that during the last Deglacial period.