气候变化领域集成服务门户(CCPortal): Fire history of the unique high-elevation Snowmastodon (Ziegler Reservoir) site during MIS 6–4; with comparisons of TII to TI in the southern Colorado Rockies

CCPortal

DOI	10.1016/j.quascirev.2020.106213
	Fire history of the unique high-elevation Snowmastodon (Ziegler Reservoir) site during MIS 6–4; with comparisons of TII to TI in the southern Colorado Rockies
	Anderson R.S.; Jiménez-Moreno G.; Belanger M.; Briles C.
发表日期	2020
ISSN	0277-3791
卷号	232
英文摘要	Paleoecological records detailing fire and vegetation histories during previous interglacials are extremely rare. We present a unique, high-resolution, 10-m long record of fire from a high elevation conifer-dominated site – the Snowmastodon (Ziegler Reservoir) site – in the southern Rocky Mountains, USA, for the period spanning MIS 6 to MIS 4. The charcoal particle influx (CHAR) over the entire Snowmastodon record documents that fire was a significant process on this high elevation landscape during MIS 5e-MIS 5a, just as it is today, but during a period without human influence. Both vegetation and precession cycles influence fire occurrence, with warm stages (MIS 5e, 5c, 5a) exhibiting higher CHAR than cool stages (MIS 6, 5d, 5b, 4). CHAR abruptly increases at the MIS 6-MIS 5e boundary, contemporaneously with a rapid increase in arboreal pollen. A strong positive correlation during MIS 5e between CHAR and Pinus pollen strongly suggests control of charcoal production and deposition through burning of Pinus forests within the region. Subsequently, elevated CHAR is correlated to abundant Abies concolor in MIS 5c, and Picea in MIS 5a, while minimal CHAR occurs during MIS 5b when local vegetation was sagebrush steppe. Comparison of the Termination II (TII) Snowmastodon record with Termination I (TI) from several nearby published sites shows mostly similar patterns of developing forest preceding increased burning, with a lag of several hundred years. This may signify the development of a new fire regime tied specifically to the new vegetation type, as climate warmed and fine fuels accumulated in a forested community. © 2020
英文关键词	Fire history; Glacial terminations; Interglacial; North America; Paleogeography; Precession cycles; Snowmastodon; Vegetation dynamics; Ziegler reservoir
语种	英语
scopus关键词	Charcoal; Forestry; Vegetation; Fire history; Glacial terminations; Interglacial; North America; Paleogeography; Precession cycles; Snowmastodon; Vegetation dynamics; Fires; comparative study; fire history; glacial history; historical record; interglacial; marine isotope stage; paleoecology; paleogeography; pollen; vegetation history; Colorado; Rocky Mountains; United States; Abies concolor; Artemisia tridentata; Coniferophyta; Picea
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151562
作者单位	School of Earth and Sustainability, Laboratory of Paleoecology, Northern Arizona University, FlagstaffAZ 86011, United States; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Fuente Nueva s/n, Granada, 18002, Spain; Department of Geography and Environmental Sciences, University of Colorado, Denver, Denver, CO 80217, United States
推荐引用方式 GB/T 7714	Anderson R.S.,Jiménez-Moreno G.,Belanger M.,等. Fire history of the unique high-elevation Snowmastodon (Ziegler Reservoir) site during MIS 6–4; with comparisons of TII to TI in the southern Colorado Rockies[J],2020,232.
APA	Anderson R.S.,Jiménez-Moreno G.,Belanger M.,&Briles C..(2020).Fire history of the unique high-elevation Snowmastodon (Ziegler Reservoir) site during MIS 6–4; with comparisons of TII to TI in the southern Colorado Rockies.Quaternary Science Reviews,232.
MLA	Anderson R.S.,et al."Fire history of the unique high-elevation Snowmastodon (Ziegler Reservoir) site during MIS 6–4; with comparisons of TII to TI in the southern Colorado Rockies".Quaternary Science Reviews 232(2020).