Applied Paleoecology: Vegetation History, Soil Carbon Accumulation and Climatic Interactions of the Peatlands on the North Slope, Alaska

Am-9416858 Eisner，Wendy R.俄亥俄州立大学标题：应用古生态学：阿拉斯加北坡泥炭地的植被历史、土壤碳积累和气候相互作用该奖项支持ARSS/PALE计划下的研究。将分析选定的北坡泥炭地的各种古生态指标，以恢复植被历史和冻土带植被与碳积累速率的关系。岩芯和表面样品将从目前正在ARCS方案倡议范围内进行调查的地点采集。地表样本将被用来校准植被类型、土壤温度、融化深度和水分的生物指标。将分析花粉、孢子、真菌、藻类和大型化石，作为过去生态系统的替代数据。植被重建将被比作改变岩心中的碳积累速度，为生态学家和土壤学家提供一个非常长期的监测设备，在这个复杂的环境中的景观动态。北极冻土带作为世界碳的主要储存库，扮演着重要的角色。北方泥炭可能仍在积累土壤碳，也可能实际上正在失去它。这个问题对全球变化情景具有重要影响。

Abstract ATM-9416858 Eisner, Wendy R. Ohio State University Title: Applied Paleoecology: Vegetation History, soil carbon accumulation and climatic interactions of the Peatlands on the North Slope, Alaska This award supports research under the ARCSS/PALE Program . A wide range of paleoecological indicators from selected North Slope peatlands will be analyzed in order to reconstruct vegetation history and the relationship of tundra vegetation to carbon accumulation rates. Cores and surface samples will be taken from sites currently under investigation within the ARCSS Program initiatives. Surface samples will be used to calibrate biotic indicators with vegetation type, soil temperature, thaw depth, and moisture. Pollen, spores, fungi, algae, and macrofossils will be analyzed as proxy data for the past ecosystem. Vegetation reconstruction will be compared to changing carbon accumulation rates in the cores, offering ecologists and soil scientists a very long-term monitoring device of landscape dynamics in this complex environment. The arctic tundra plays a significant role as a major repository of the world's carbon. Northern peat may still be accumulating soil carbon or may actually be losing it. This question has important consequences for global change scenarios.