Sukachev Institute of Forests, Federal Research Center, Russian Academy of Science, Siberian Branch, Academgorodok 50/28, Krasnoyarsk, Russia, 660036.
Siberian Federal University, Svobodny str.79, Krasnoyarsk, Russia, 660041.
Ambio. 2021 Nov;50(11):1953-1974. doi: 10.1007/s13280-020-01490-x. Epub 2021 Jan 29.
The majority of area burned by wildfire are located in Siberia. Mainly low-intensity surface fires occur in larch forests, whereas in evergreen forests both surface and crown fires are observed. Warming has led to an increase in the frequency and area of wildfires that have reached the Arctic Ocean shore. However, wildfires are the most important factor in taiga dynamics; larch and Scots pine have evolved under conditions of periodic forest fires, thereby gaining a competitive advantage over non-fire adapted species; in the permafrost zone, periodic fires are a prerequisite for the dominance of larch. Wildfires support ecosystem health, biodiversity, and conservation; periodic wildfires decrease the danger of catastrophic wildfires. With an amplified rate of increase in fires, it is necessary to focus fire suppression on areas of high social, natural, and economic value, while allowing a greater number of wildfires to burn in the vast Siberian forest landscapes.
绝大多数野火发生的区域位于西伯利亚。主要发生在落叶松林的低强度地表火,而在常绿林中则会同时观察到地表火和树冠火。气候变暖导致野火的发生频率和面积增加,已经蔓延到了北冰洋海岸。然而,野火是泰加林动态的最重要因素;落叶松和欧洲赤松在周期性森林火灾的条件下进化,从而获得了相对于非火灾适应物种的竞争优势;在永久冻土带,周期性火灾是落叶松占主导地位的前提条件。野火支持着生态系统健康、生物多样性和保护;周期性野火降低了灾难性野火的危险。随着火灾增长率的增加,有必要将火灾抑制的重点放在具有高社会、自然和经济价值的地区,同时允许在广阔的西伯利亚森林景观中发生更多的野火。