Collaborative: Prehistoric Biomass Burning at Local to Regional Scales in Eastern North America

PI-GRIMM：火是生态系统功能的重要组成部分。火目前也被全世界人口广泛用于将森林转化为牧场和农田。火灾的历史作用和火灾在不同生态系统类型中的频率对于评估当今的管理决策非常重要。这个项目着眼于北美北部森林和草原6,000年来不断变化的火灾历史。花粉记录和木炭记录将结合起来，研究植被和火灾之间的相互作用。这将提供一个比较，如何从现代火灾的现代排放量与过去的不同。 这项研究很重要，因为它把火的作用放在一个区域的角度。将开发和测试方法，使火灾历史从个别湖泊扩展到火灾结构和影响生态系统的区域视图。

PI-GRIMM: Fire is an important component of the functioning of ecosystems. Fire also is currently being used extensively by human populations worldwide in the conversion of forest to pasture and agricultural land. The historic role of fire and the frequency of fire in different ecosystem types is important in assessing present-day management decisions. This project looks at 6,000 years of fire history in changing landscapes of the boreal forests and grasslands of North America. Pollen records and charcoal records will be combined to examine interplay between vegetation and fire. This will provide a comparison of how modern emissions from modern fires differ from those of the past. This research is important because it places the role of fire in a regional perspective. Methods are to be developed and tested which will allow fire history from individual lakes to be extended to a regional view of how fire structures and affects ecosystems.