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

皮格林：火是生态系统功能的重要组成部分。火目前也被世界各地的人们广泛用于将森林变成牧场和农田。火灾的历史作用和火灾在不同生态系统类型中的发生频率对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不断变化的景观中6000年的火灾历史。花粉记录和木炭记录将被结合起来，以检查植物和火之间的相互作用。这将提供现代火灾排放与过去的不同之处的对比。这项研究很重要，因为它把火的作用放在了一个区域的角度。将开发和测试方法，这些方法将允许将单个湖泊的火灾历史扩展到火灾如何结构和影响生态系统的区域视角。

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.