Effects of post-fire conditions on soil respiration in boreal forests with special reference to Northeast China forests |
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Authors: | Laiye Qu Keming Ma Xiaoniu Xu Lihua Wang and Kaichiro Sasa |
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Institution: | (1) State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China;(2) College of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China;(3) College of Life and Environmental Science, Wenzhou University, Wenzhou, 325027, China;(4) Hokkaido University Forests, FSC, Sapporo 060-0809, Japan |
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Abstract: | Forest fires frequently occur in boreal forests, and their effects on forest ecosystems are often significant in terms of
carbon flux related to climate changes. Soil respiration is the second largest carbon flux in boreal forests and the change
in soil respiration is not negligible. Environmental factors controlling the soil respiration, for example, soil temperature,
are altered by such fires. The abnormal increase in soil temperature has an important negative effect on soil microbes by
reducing their activities or even by killing them directly with strong heat. On the other hand, although vegetation is directly
disturbed by fires, the indirect changes in soil respiration are followed by changes in root activities and soil microbes.
However, there is very limited information on soil respiration in the forests of Northeast China. This review, by combining
what is known about fire influence on soil respiration in boreal forests from previous studies of post-fire effects on soil
conditions, soil microbes, and forest regeneration, presents possible scenarios of the impact of anticipated post-fire changes
in forest soil respiration in Northeast China. |
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Keywords: | boreal forests Northeast China forest fires forest regeneration soil microbes soil respiration |
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