Early Vegetal Succession Following Large Northern Rocky Mountain Wildfires
Early Vegetal Succession Following Large Northern Rocky Mountain Wildfires
复制标题
北部落基山野火后的早期植物演替
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Peter F. STICKNEyl
中科院分区：
文献类型：
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作者：
J. Lyon;Peter F. STICKNEyl
简介~LDFIRE是一种在北方落基山脉森林中自然反复出现的现象。最早的探险历史记载中提到了被大火烧毁的地区，本世纪的大规模森林大火也有记载。1800年之前的文字记录是粗略的，但地面上的木炭、燃烧过的树桩和树木横截面上的火痕提供了证据，证明森林火灾的历史早于北方落基山脉最古老的植被。因此，人们普遍认为，这些森林是在反复发生火灾的情况下发展起来的。尽管有这种进化的概念，但对火的生态意义的认识是相对较新的，尚未得到很好的定义。许多文献把火看作是一个稳定系统的外部扰动。这意味着，森林演替成为生态系统恢复力或从外界干扰中恢复的能力的证据，预测模型倾向于假设经典的演替概念，即早期的演替系列植物修改网站，以自己的排斥，从而允许建立系间和顶极物种。我们的数据表明，这是一个贫穷的概念模型森林演替在北方落基山脉。
INTRODUCTION ~LDFIRE is a naturally recurring phenomenon in the forests of the Northern Rockies. Historical accounts of earliest explorations contain references to areas denuded by fire, and the massive forest fires of this century have been documented. Written records before 1800 are sketchy, but charcoal in the ground, burned stumps, and fire scars in tree cross sections provide evidence of a forest-fire history predating the oldest living vegetation in the Northern Rockies. Thus, it is generally accepted that these forests have evolved in the presence of repeated fires. Despite this evolutionary concept, recognition of the ecological significance of fire is relatively recent and not yet well defined. Much of the literature treats fire as the external disturbance of an otherwise stable system. By implication, forest succession becomes evidence of ecosystem resilience or ability to recover from outside disturbance, and predictive models tend to assume the classic concept of succession in which early seral plants modify the site to their own exclusion and thereby permit establishment of interseral and climax species. Our data suggest that this is a poor conceptual model for forest succession in the Northern Rockies.