Large fires or small fires, will they differ in affecting shifts in species composition and distributions under climate change?

•Fire catalyzes climate-induced shifts in species composition and distribution.•Frequent small fires exert stronger effects on the shifts than infrequent large fires.•The results provide scientific basis for forest policymakers to understand tradeoffs among fire management strategies. Climate change...

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Vydáno v:Forest ecology and management Ročník 510; s. 120131
Hlavní autoři: Xu, Wenru, He, Hong S., Huang, Chao, Duan, Shengwu, Hawbaker, Todd J., Henne, Paul D., Liang, Yu, Zhu, Zhiliang
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 15.04.2022
Témata:
administrative management
Boreal-temperate ecotone
Climate change
climatic factors
dynamic models
ecosystems
ecotones
fire regime
Fire size
life history
Species composition and distribution
species diversity
temperate forests
trees
wildfires
Fire size
Climate change
Boreal-temperate ecotone
Species composition and distribution
ISSN:0378-1127, 1872-7042
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Shrnutí:•Fire catalyzes climate-induced shifts in species composition and distribution.•Frequent small fires exert stronger effects on the shifts than infrequent large fires.•The results provide scientific basis for forest policymakers to understand tradeoffs among fire management strategies. Climate change is expected to increase fire activity, which has the potential to accelerate climate-induced shifts in species composition and distribution in the boreal-temperate ecotone. Wildfire can kill resident trees, and thus provide establishment opportunities for migrating tree species. However, the role of fire size and its interactions with tree species with varied life-history attributes in driving climate-induced shifts is not understood. Future fire regimes could be characterized by many small fires or a few large fires. Large and small fires create and regulate distinct burn patterns, which may influence tree-species responses and post-fire successional trajectories. Here we investigated the effects of future fire-regime variability on the boreal-temperate ecotone of northeastern China under climate change using a coupled forest dynamic model (LANDIS PRO) and ecosystem process model (LINKAGES). We simulated fire regimes using the LANDIS PRO fire module. We designed two fire scenarios (frequent, small fires and infrequent, large fires) to represent different fire regimes in terms of fire size. Results showed fire-catalyzed, climate-induced transitions from boreal to pioneer and temperate forest communities. Frequent, small fires resulted in 13% and 23% higher increases in pioneer and temperate species respectively, relative to infrequent, large fires. Therefore, species composition shifts were faster following frequent, small fires than infrequent, large fires. The results can help policymakers and forest managers determine tradeoffs among strategies to mitigate or adapt to climate change under altered fire regimes.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0378-1127
1872-7042
DOI:10.1016/j.foreco.2022.120131