The Role of Fire in Prehistoric Times of Rapid Climate Change

火灾在气候快速变化的史前时期的作用

• 批准号: 9107272
• 负责人: James Clark
• 金额: $ 10.33万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-15 至 1992-09-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9107272&HistoricalAwards=false
• 关键词: Role; Fire; Prehistoric; Times; Rapid

Climate influences vegetation through its effects on fire regimes. In order to understand how future climate changes will alter global vegetation patterns, we must understand the role of fire during times of rapid climate and vegetation change. In this study, Dr. Clark will be determining the frequency of fires at these times of rapid climate and vegetation change. He will be coring lake sediments that contain fossil charcoal produced by these fires. Annual laminations in the sediments allow the investigator to determine in the age of this charcoal and to reconstruct the frequency of fires at these times. These reconstructed fire regimes will be compared with vegetation and climate changes known from fossil pollen and other data. These patterns will then be mapped across eastern North America to establish the spatial and temporal patterns of fire occurrence that prevailed when the climate was changing rapidly. These results will help us to interpret the potential role of fire as climate changes in the near future.

气候通过对火的影响影响植被 政权。 为了了解未来的气候变化 改变全球植被模式，我们必须了解 在气候和植被迅速变化的时期发生火灾。 在 在这项研究中，克拉克博士将确定火灾的频率， 在气候和植被迅速变化的时期。 他将 对湖泊沉积物进行取样， 这些火。 沉积物中每年的叠层 调查人员确定这种木炭的年龄， 重建这些时间段的火灾频率 这些 重建的火灾状况将与植被进行比较， 从化石花粉和其他数据中了解气候变化。 这些 然后将绘制整个北美东部的模式， 建立火灾发生的空间和时间模式 在气候迅速变化的时候盛行。 这些 结果将帮助我们解释火的潜在作用， 气候变化在不久的将来。