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DOI10.1016/j.agrformet.2024.109899
Boreal forest tree growth and sap flow after a low-severity wildfire
发表日期2024
ISSN0168-1923
EISSN1873-2240
起始页码347
卷号347
英文摘要Boreal forests are exposed to larger and more frequent fires due to climate change, with significant consequences for their carbon and water balances. Low-severity fires (trees charred but surviving) are the most common fire regime in the Eurasian boreal forest, but we still lack understanding on how they impact tree functioning. This study focused on the dynamics of tree transpiration and stem growth of Pinus sylvestris in central Sweden after a large wildfire in 2018. We compared a stand impacted by low-severity fire (LM) with an unburnt stand (UM), over three years following the fire (2020-2022). We found that transpiration was on average lower and more variable within the stand at LM compared to UM. LM also had consistently lower stem growth compared to UM, resulting in larger accumulated growth for the unburnt site in the second to fourth year after the fire. Our results highlight the complex effects of low-severity fire on tree water cycling, with both direct (damage to tree xylem and roots) and indirect fire impacts (due to loss of understory vegetation and changes in soil properties). Trees affected by low-severity fire also exhibited reduced resilience to water shortages. Considering the expected increase in frequency of droughts and forest fires at higher northern latitudes, such indirect fire impacts may put additional pressure on the boreal forest.
英文关键词2018 Drought; Eurasia; Forest fire; Nordic pine forest; Tree increment growth; Tree transpiration
语种英语
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号WOS:001175088700001
来源期刊AGRICULTURAL AND FOREST METEOROLOGY
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/298821
作者单位University of Helsinki; Poznan University of Life Sciences; Lund University; Swansea University; Lund University; Lund University
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GB/T 7714
. Boreal forest tree growth and sap flow after a low-severity wildfire[J],2024,347.
APA (2024).Boreal forest tree growth and sap flow after a low-severity wildfire.AGRICULTURAL AND FOREST METEOROLOGY,347.
MLA "Boreal forest tree growth and sap flow after a low-severity wildfire".AGRICULTURAL AND FOREST METEOROLOGY 347(2024).
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