4.4 Article

Response of forest productivity to changes in growth and fire regime due to climate change

期刊

CANADIAN JOURNAL OF FOREST RESEARCH
卷 53, 期 9, 页码 663-676

出版社

CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjfr-2022-0207

关键词

boreal forests; climate change; productivity; growth; fire regime

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Climate change in the boreal forest has complex impacts on tree growth and fire activity. This study assesses the combined impact of these changes on timber supply in Quebec, Canada. The study projects climate-induced impacts on growth and fire activity at different time periods and highlights the importance of considering fire in forest management planning in the context of climate change.
Climate change is having complex impacts on the boreal forest, modulating both tree growth limiting factors and fire regime. However, these aspects are usually projected independently when estimating climate change effect on the boreal forest. Using a combination of three different methods, our goal is to assess the combined impact of changes in growth and fire regime due to climate change on the timber supply at the transitions from closed to open boreal coniferous forests in Quebec, Canada. To identify the areas that are likely to be the most sensitive to climate change, we projected climate-induced impacts on growth and fire activity at three different time periods: 2011-2040 RCP 8.5 for low growth change and minimum fire activity, 2071-2100 RCP 4.5 for moderate growth change and medium fire activity, and 2071-2100 RCP 8.5 for high growth change and maximum fire activity. Our study shows the importance of incorporating fire in strategic forest management planning especially in a context of climate change. Under the most extreme scenarios, the negative impact of fire activity on productive area and total volume mostly offsets the positive effects of climate change via improved tree growth.

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