Wildfire-Driven Forest Conversion in Western North American Landscapes
Wildfire-Driven Forest Conversion in Western North American Landscapes
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DOI：
10.1093/biosci/biaa061
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发表时间：
2020-08-01
期刊：
影响因子：
10.1
通讯作者：
Rodman, Kyle C.
中科院分区：
文献类型：
--
作者：
Coop, Jonathan D.;Parks, Sean A.;Rodman, Kyle C.
不断变化的干扰机制和气候可以克服森林生态系统的复原力。在严重的火灾之后，森林恢复可能会受到缺乏树种来源、火灾后气候变暖和干燥或短时间再燃烧的影响。恢复能力丧失的一个潜在后果是，火灾前的森林转变为不同的森林类型或非森林植被。转换意味着主要物种、生命形式或功能发生重大、广泛和持久的变化，对生态系统服务产生影响。在本文中，我们综合了越来越多的证据，火驱动的转换和我们的理解，其原因在北美西部。我们评估我们预测转化的能力，并强调重要的不确定性。森林对不断变化的火灾活动和气候的脆弱性不断增加，迫使管理方法发生转变，我们提出了科学家和管理人员共同进行应用研究的关键主题，以支持在火灾前森林可能无法恢复的时代的决策。
Changing disturbance regimes and climate can overcome forest ecosystem resilience. Following high-severity fire, forest recovery may be compromised by lack of tree seed sources, warmer and drier postfire climate, or short-interval reburning. A potential outcome of the loss of resilience is the conversion of the prefire forest to a different forest type or nonforest vegetation. Conversion implies major, extensive, and enduring changes in dominant species, life forms, or functions, with impacts on ecosystem services. In the present article, we synthesize a growing body of evidence of fire-driven conversion and our understanding of its causes across western North America. We assess our capacity to predict conversion and highlight important uncertainties. Increasing forest vulnerability to changing fire activity and climate compels shifts in management approaches, and we propose key themes for applied research coproduced by scientists and managers to support decision-making in an era when the prefire forest may not return.