Knowledge of historical fire regimes informs the restoration of woodland communities. In the Appalachian Plateau of Ohio and Kentucky, USA, little is known about the long-term history of fire in oak–pine communities, which are declining in the region. To address this knowledge gap, two sites with remnant fire-scarred yellow pines, Hatton Ridge in Kentucky and McAtee Run in Ohio, were studied to document aspects of the historical fire regime. Cross-sections from fire-scarred yellow pines were collected. Fire chronologies were constructed and fire intervals were calculated using standard dendrochronological methods. Fires, the great majority of which occurred in the dormant season, were frequent at both sites from circa 1750 at Hatton and 1800 at McAtee, until the suppression period (1930 to present); only one fire was recorded after 1930. Mean fire intervals (MFI) for the entire period were nearly identical, 4.7 and 4.4 years at Hatton and McAtee, respectively. At both sites, MFIs were lowest in the industrial period (1850 to 1930). At Hatton, the MFI was 6.6 years before 1850 and 3.5 years from 1850 to 1930, while at McAtee, the MFI was 8.4 years before 1850 and 2.7 years from 1850 to 1930. At both sites, the occurrence of fire was not more frequent than expected in years associated with a drought. At McAtee, the majority of pine establishment occurred in pulses during two periods, 1770 to 1781 and 1853 to 1867, suggesting stand-scale canopy disturbances; the second pulse was associated with frequent burning. In contrast, large pulses of pine establishment were not found at Hatton. Yellow pines were a component of these communities, which experienced frequent fire for at least 130 to 160 years. After more than 70 years with little or no fire, yellow pines are now a minor component of the overstory and pine regeneration is essentially absent. Although intensive management with partial harvesting and frequent fire would be required to restore oak–pine woodlands on appropriate sites, it would serve to sustain these increasingly uncommon communities.

中文翻译：

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残留的黄色松树在俄亥俄州和美国肯塔基州的阿巴拉契亚高原发生的历史大火

对历史火灾状况的了解有助于林地社区的恢复。在俄亥俄和美国肯塔基州的阿巴拉契亚高原，人们对橡树-松树群落长期的火灾历史知之甚少，而该地区的火灾在不断减少。为了解决这一知识鸿沟，研究了肯塔基州的哈顿·里奇和俄亥俄州的麦克阿蒂·勒恩两个残留有火伤痕迹的黄色松树的地点，以记录历史火情的各个方面。从火红的黄色松树收集横截面。建立火灾年代，并使用标准的年代学方法计算火灾间隔。从休顿的大约1750年和McAtee的1800年左右的两个地点都频繁发生大火，直到休眠期为止（1930年至今）；1930年之后，仅记录了一场大火。整个期间的平均起火间隔（MFI）几乎相同，分别为Hatton和McAtee的4.7年和4.4年。在这两个地点，小额信贷机构在工业时期（1850年至1930年）最低。在哈顿，MFI发生在1850年之前的6.6年，从1850年至1930年发生的3.5年，而在McAtee，MFI发生在1850年之前的8.4年，从1850年到1930年的2.7年。预计在与干旱有关的年份中。在麦卡迪（McAtee），大多数松树的建立都在1770年至1781年和1853年至1867年的两个时期内以脉冲形式发生，这表明了林冠规模的林冠扰动。第二个脉冲与频繁燃烧有关。相反，在哈顿没有发现大片的松树。黄松是这些社区的组成部分，经历了至少130至160年的频繁起火。经过70多年甚至没有或很少生火的故事，现在黄色的松树只是故事情节中的一小部分，基本上没有松树再生。尽管需要进行部分采伐和频繁起火的集约化管理，以在适当的地点恢复橡松林地，但这将有助于维持这些日益罕见的社区。