Ecosystem Processes Show Uniform Sensitivity to Winter Soil Temperature Change Across a Gradient from Central to Cold Marginal Stands of a Major Temperate Forest Tree
Ecosystem Processes Show Uniform Sensitivity to Winter Soil Temperature Change Across a Gradient from Central to Cold Marginal Stands of a Major Temperate Forest Tree
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生态系统过程对主要温带林树从中央林分到冷边缘林分的冬季土壤温度变化表现出一致的敏感性
DOI：
10.1007/s10021-021-00600-4
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Kreyling J.
中科院分区：
文献类型：
--
作者：
Weigel R;Henry H.A.L;Beil I;Gebauer G. Jurasinski G;Klisz M;van der Maaten E;Muffler L;Kreyling J.
在北方温带地区，由于积雪覆盖减少导致隔热能力下降，土壤霜冻事件的强度和频率可能会增加，以应对气候变暖。在温带落叶林，土壤霜冻严重程度的增加会阻碍树木生长，增加细根、土壤动物和微生物的死亡率，从而改变碳和养分循环。然而，从单点研究来看，还不清楚这些响应的灵敏度如何沿着沿着大陆梯度从降雪量低的地区到降雪量高的地区变化。我们进行了梯度设计的积雪和土壤温度操纵实验，在一系列的低地山毛榉林网站，以评估特定网站的敏感性树木生长和土壤冷却的地球化学循环。即使是轻度和不连续的土壤霜冻也会影响树木的生长、发芽、凋落物分解和15 N的滞留。然而，敏感性的反应（治疗效果大小每度的升温或降温）是不相关的冬季气候和积雪条件。我们的研究结果支持，它可能是有效的规模这些响应模拟冬季气候变化从本地研究到区域尺度。然而，这种升级需要考虑到这样一个事实，即历史上降雪量高的寒冷地区可能会经历越来越恶劣的土壤霜冻条件，而在历史上降雪量低的温暖地区，土壤霜冻可能会减少。因此，尽管统一的生物敏感性的反应，可能有相反的方向冬季气候变化对温带森林沿着大陆温度梯度的影响，由于冬季土壤温度的不同趋势。
The magnitude and frequency of soil frost events might increase in northern temperate regions in response to climate warming due to reduced insulation caused by declining snow cover. In temperate deciduous forests, increased soil frost severity can hamper tree growth and increase the mortality of fine roots, soil fauna and microorganisms, thus altering carbon and nutrient cycling. From single-site studies, however, it is unclear how the sensitivities of these responses change along continental gradients from regions with low to high snowfall. We conducted a gradient design snow cover and soil temperature manipulation experiment across a range of lowland beech forest sites to assess the site-specific sensitivity of tree growth and biogeochemical cycling to soil cooling. Even mild and inconsistent soil frost affected tree increment, germination, litter decomposition and the retention of added15N. However, the sensitivity of response (treatment effect size per degree of warming or cooling) was not related to prevailing winter climate and snow cover conditions. Our results support that it may be valid to scale these responses to simulated winter climate change up from local studies to regional scales. This upscaling, however, needs to account for the fact that cold regions with historically high snowfall may experience increasingly harsh soil frost conditions, whereas in warmer regions with historically low snowfall, soil frost may diminish. Thus, despite the uniform biotic sensitivity of response, there may be opposing directions of winter climate change effects on temperate forests along continental temperature gradients due to different trends of winter soil temperature.
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影响因子：
5.2
作者：
Shuting Yang;J. Christensen
通讯作者：
Shuting Yang;J. Christensen
影响因子：
8.8
作者：
Kreyling, Juergen;Schweiger, Andreas H.;Larsen, Klaus Steenberg
通讯作者：
Larsen, Klaus Steenberg
影响因子：
1.1
作者：
Kreyling, Juergen;Henry, Hugh A. L.
通讯作者：
Henry, Hugh A. L.
人工土壤霜对挪威云杉形成层活性和木质部形成的影响
DOI：
--
发表时间：
2012
期刊：
Trees
影响因子：
--
作者：
T. Jyske;M. Manner;H. Mäkinen;P. Nöjd;Heli Peltola;T. Repo
通讯作者：
T. Repo
影响因子：
4
作者：
A. Reinmann;P. Templer
通讯作者：
A. Reinmann;P. Templer