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

Climate change is expected to increase fire activity, which has the potential accelerate climate-induced shifts in species composition and distribution boreal-temperate ecotone. Wildfire can kill resident trees, thus provide establishment opportunities for migrating tree species. However, role of size its interactions with varied life-history attributes driving not understood. Future regimes could be characterized by many small fires or a few large fires. Large create regulate distinct burn patterns, may influence tree-species responses post-fire successional trajectories. Here we investigated effects future fire-regime variability on ecotone northeastern China under climate using coupled forest dynamic model (LANDIS PRO) ecosystem process (LINKAGES). We simulated LANDIS PRO module. designed two scenarios (frequent, infrequent, fires) represent different terms size. Results showed fire-catalyzed, transitions from boreal pioneer temperate communities. Frequent, resulted 13% 23% higher increases respectively, relative Therefore, were faster following frequent, than The results help policymakers managers determine tradeoffs among strategies mitigate adapt altered regimes.