TECO: The Role of Wildfire in Alaska: Experimental and Regional Approaches to Improved Understanding of Boreal Feedbacks to Climate (FROSTFIRE)

本研究提交给陆地生态与全球变化机构间竞赛（TECO），目的是对北方森林火灾对气候的主要反馈类型进行预测性理解，作为提高对北方森林在地球气候系统中变化作用的理解的基础。我们的目标是了解当前总循环模型（GCM）之外的过程。由于对生物和生态系统反馈对区域和全球动态的作用的认识有限，这些过程反映的“意外”降低了GCM预测气候变化的可靠性。该项目包括在北方森林进行综合、大规模的野外实验，同时研究古生态动力学，以及火灾和气候模型。该项目将综合测量燃烧后的森林动态、土壤过程、微量气体通量以及植被和气候的古生态重建。这项研究将与阿拉斯加的Bonanza Creek LTER项目联合进行。一旦现场实验建立起来，TECO项目启动的现场操作和实验性燃烧处理的长期监测将成为Bonanza Creek LTER计划的一部分。该项目很重要，因为它代表了对北方森林火灾与全球气候动态之间反馈的少数广泛和综合评估之一。

9728963 Chapin The purpose of this research submitted to the Interagency competition on Terrestrial Ecology and Global Change (TECO) is to develop a predictive understanding of the major classes of feedbacks from boreal fire to climate as a basis for improved understanding of the changing role of the boreal forest in the earth's climate system. The goal is to understand processes that remain outside of current general circulation models (GCM's). These processes reflect "surprises" that reduce the reliability of GCM's to predict climate change because of limited understanding of the role of biotic and ecosystem feedbacks to regional and global dynamics. This project involves an integrative, large-scale field experiment in the boreal forest along with studies of paleoecological dynamics, and fire and climate modeling. The project will integrate measurements of forest dynamics following burning, soil processes, trace gas fluxes, and paleoecological reconstruction of vegetation and climate. The research will be conducted in association with the Bonanza Creek LTER program in Alaska. Once the field experiments are established, the long-term monitoring of field manipulation and experimental burning treatments initiated in this TECO project will become part of the Bonanza Creek LTER program. The project is important because it represents one of the few extensive and integrative assessments of the feedbacks between fire in boreal forest and global climate dynamics.