Long-term forest composition and its drivers in taiga forest in NW Russia

Long-term forest composition and its drivers in taiga forest in NW Russia
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俄罗斯西北部针叶林的长期森林组成及其驱动因素

DOI:
10.1007/s00334-015-0542-y
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发表时间:
2015
影响因子:
2.5
通讯作者:
Kuosmanen N
Kuosmanen N
中科院分区:
地球科学3区
文献类型:
--
作者:
Kuosmanen N

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了解北方森林长期动态背后的过程可以提供信息,帮助在不断变化的环境条件下预测未来的北方植被。在这里,我们研究了在俄罗斯西北部的俄罗斯泰加森林的西部边界的全新世林分尺度的植被动态及其驱动因素。利用4个小空心点和2个湖心点的化石花粉和针叶树气孔记录,重建了全新世以来当地的植被动态。变异分区被用来评估潜在驱动因素(温度、森林火灾和生长地湿度)对泰加林长期林分尺度动态的相对重要性。所有主要的树木分类群,包括北方的关键树种--云杉(挪威云杉)和西伯利亚落叶松(西伯利亚落叶松)--自10,000卡前以来一直存在于当地。持续的全新世的存在。在三个小的中空地点发现的西伯利亚表明,该物种在北欧经历了一次快速的冰后迁徙。在所有研究地点都存在但并不占优势,直到它在8,000到7,000卡/年之间的扩张通过白桦、松树和落叶松的抑制而显著地改变了森林结构。结果表明,总体上,研究区全新世森林动态受温度驱动,但在短时间间隔内,局部因素,特别是森林火灾的作用更为突出。不同立地间的比较揭示了局部因子在泰加林林分尺度动态中的重要性。因此,泰加林未来对气候变化的反应将主要受该地点的当地特征的影响。
Understanding the processes behind long-term boreal forest dynamics can provide information that assists in predicting future boreal vegetation under changing environmental conditions. Here, we examine Holocene stand-scale vegetation dynamics and its drivers at the western boundary of the Russian taiga forest in NW Russia. Fossil pollen and conifer stomata records from four small hollow sites and two lake sites are used to reconstruct local vegetation dynamics during the Holocene. Variation partitioning is used to assess the relative importance of the potential drivers (temperature, forest fires and growing site wetness) to the long-term stand-scale dynamics in taiga forest. All the main tree taxa, including the boreal keystone speciesPicea abies(Norway spruce) andLarix sibirica(Siberian larch), have been locally present since 10,000 cal yrbp. The constant Holocene presence ofL. sibiricaat three small hollow sites suggests a fast postglacial immigration of the species in northern Europe.Piceawas present but not dominant at all study sites until its expansion between 8,000 and 7,000 cal yrbpmarkedly changed the forest structure through the suppression ofBetula(birch),Pinus(pine) andLarix. Our results demonstrate that in general, the Holocene forest dynamics in our study region have been driven by temperature, but during short intervals the role of local factors, especially forest fires, has been prominent. The comparison between sites reveals the importance of local factors in stand-scale dynamics in taiga forests. Therefore, the future responses of taiga forest to climate change will be predominantly modulated by the local characteristics at the site.
不列颠群岛的生物植物群:Alnus Mill。
DOI: 10.2307/2257070
发表时间: 1953
期刊: Journal of Ecology
影响因子: 5.5
作者:
D. N. Mcvean
通讯作者: D. N. Mcvean
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DOI: --
发表时间: 2003
期刊:
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DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
Lisa Öberg;L. Kullman
通讯作者: L. Kullman
距今 8000 年,挪威云杉出现在瑞典斯坎德斯山脉:全新世树木分布的新线索
DOI: --
发表时间: 1996
期刊:
影响因子: --
作者:
L. Kullman
通讯作者: L. Kullman