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Analysis of the Effect of Climate Warming on Paludification Processes: Will Soil Conditions Limit the Adaptation of Northern Boreal Forests to Climate Change? A Synthesis

机译：气候变暖对羽毛过程的影响分析：土壤条件将限制北方北部北方北方北方北方森林对气候变化的影响吗？合成

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Northern boreal forests are characterized by accumulation of accumulation of peat (e.g., known as paludification). The functioning of northern boreal forest species and their capacity to adapt to environmental changes appear to depend on soil conditions. Climate warming is expected to have particularly pronounced effects on paludified boreal ecosystems and can alter current forest species composition and adaptation by changing soil conditions such as moisture, temperature regimes, and soil respiration. In this paper, we review and synthesize results from various reported studies (i.e., 88 research articles cited hereafter) to assess the effects of climatic warming on soil conditions of paludified forests in North America. Predictions that global warming may increase the decomposition rate must be considered in combination with its impact on soil moisture, which appears to be a limiting factor. Local adaptation or acclimation to current climatic conditions is occurring in boreal forests, which is likely to be important for continued ecosystem stability in the context of climate change. The most commonly cited response of boreal forest species to global warming is a northward migration that tracks the climate and soil conditions (e.g., temperature and moisture) to which they are adapted. Yet, some constraints may influence this kind of adaptation, such as water availability, changes in fire regimes, decomposer adaptations, and the dynamic of peat accumulation. In this paper, as a study case, we examined an example of potential effects of climatic warming on future paludification changes in the eastern lowland region of Canada through three different combined hypothetical scenarios based on temperature and precipitation (e.g., unchanged, increase, or decrease). An increase scenario in precipitation will likely favor peat accumulation in boreal forest stands prone to paludification and facilitate forested peatland expansion into upland forest, while decreased or unchanged precipitation combined with an increase in temperature will probably favor succession of forested peatlands to upland boreal forests. Each of the three scenarios were discussed in this study, and consequent silvicultural treatment options were suggested for each scenario to cope with anticipated soil and species changes in the boreal forests. We concluded that, despite the fact boreal soils will not constrain adaptation of boreal forests, some consequences of climatic warming may reduce the ability of certain species to respond to natural disturbances such as pest and disease outbreaks, and extreme weather events.
机译：北方北方森林的特征是泥炭积累的积累（例如，称为卑鄙）。北方北方森林物种的运作及其适应环境变化的能力似乎取决于土壤条件。预计气候变暖将对对血糖生态系统产生特别明显的影响，并且可以通过改变水分，温度制度和土壤呼吸等土壤条件来改变当前的森林物种组成和适应。在本文中，我们审查和综合各种报告的研究（即88个研究文章，以后引用），以评估气候变暖对北美孢子化森林土壤条件的影响。全球变暖可能增加分解率的预测必须与其对土壤水分的影响相结合，这似乎是一个限制因素。北方森林中发生局部适应或对当前气候条件的适应，这对气候变化的背景下持续的生态系统稳定性可能是重要的。最常见的北方森林物种对全球变暖的反应是北方迁移，追踪它们的气候和土壤条件（例如，温度和水分）。然而，一些约束可能影响这种适应，例如水可用性，消防制度的变化，分解器适应以及泥炭累积的动态。在本文中，作为一项学习案例，我们研究了加拿大东部低地地区东部低地地区未来的气候变化的潜在影响的例子，通过三种不同的基于温度和降水（例如，不变，增加或减少）。沉淀的增加的情况可能有利于北方森林中的泥炭积累易于繁荣，促进森林泥土扩张进入山地森林，同时降低或不变的降水量随着温度的增加而相结合，可能有利于森林泥土到高地北方森林的继承。在本研究中讨论了这三种情况中的每一个，因此对每个场景建议应对预期的土壤和物种在北方林的变化的情况下提出了造林治疗方案。我们得出结论，尽管北方土壤不会限制北方森林的适应，气候变暖的一些后果可能会降低某些物种对害虫和疾病爆发等自然紊乱的能力，以及极端天气事件。

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