Wildfires and global change
Wildfires and global change
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DOI：
10.1002/fee.2359
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发表时间：
2021-06-03
影响因子：
10.3
通讯作者：
Keeley, Jon E.
中科院分区：
文献类型：
--
作者：
Pausas, Juli G.;Keeley, Jon E.
没有单一的因素会产生野火;相反，当火灾阈值（点火，燃料和干旱）被跨越时，它们就会发生。异常天气事件可能会降低这些阈值，从而增加野火的可能性和蔓延。气候变化增加了跨越其中一些阈值的频率，延长了火灾季节的持续时间，并增加了干旱年份的频率。然而，与气候相关的因素并不能解释全球火灾状况变化的所有复杂性，因为点火模式（如人类行为）和燃料结构（如土地使用变化、灭火、干旱引起的枯死、碎片化）的改变是极其重要的。当超过阈值时，火灾的规模将在很大程度上取决于火灾天气的持续时间和景观中具有连续燃料的可用区域的范围。
No single factor produces wildfires; rather, they occur when fire thresholds (ignitions, fuels, and drought) are crossed. Anomalous weather events may lower these thresholds and thereby enhance the likelihood and spread of wildfires. Climate change increases the frequency with which some of these thresholds are crossed, extending the duration of the fire season and increasing the frequency of dry years. However, climate-related factors do not explain all of the complexity of global fire-regime changes, as altered ignition patterns (eg human behavior) and fuel structures (eg land-use changes, fire suppression, drought-induced dieback, fragmentation) are extremely important. When the thresholds are crossed, the size of a fire will largely depend on the duration of the fire weather and the extent of the available area with continuous fuels in the landscape.