气候变化领域集成服务门户(CCPortal): Reconstruction of atmospheric CO 2 concentration during the late Changhsingian based on fossil conifers from the Dalong Formation in South China

CCPortal

DOI	10.1016/j.palaeo.2018.09.006
	Reconstruction of atmospheric CO 2 concentration during the late Changhsingian based on fossil conifers from the Dalong Formation in South China
	Li H.; Yu J.; McElwain J.C.; Yiotis C.; Chen Z.-Q.
发表日期	2019
ISSN	0031-0182
起始页码	37
结束页码	48
卷号	519
英文摘要	A single species of fossil conifer with well-preserved cuticles from multiple layers of the Dalong Formation in two sections in Duanshan Town, Guizhou Province, Southwest China has been used to reconstruct palaeo-atmospheric pCO 2 . The age of these layers can be dated back to the late Changhsingian (latest Permian), corresponding to the Clarkina changxingensis and Clarkina yini conodont Zones. Two calibration approaches were employed in this study. Using the stomatal ratio method, the pCO 2 curves of the two sections showed matching trends, with levels decreasing in the middle of the profiles, and similar ranges at ca. 340–510 ppm and ca. 300–440 ppm. Similar values (ca. 360–520 ppm), yet with wider error ranges, were obtained when the mechanistic model proposed by Franks et al. in 2014 was applied to one of the sections. Our values are lower than the mean pCO 2 values from coeval palaeosols, but partly overlap with them when error ranges are taken into consideration, thus more independent studies are needed to evaluate the discrepancies between the two proxy methods. The low atmospheric CO 2 concentrations in this study suggest a cool climate rather than extensive glaciation for the brief period of late Changhsingian, which is supported by the oxygen isotope record of conodont apatite and a major restructuring of Late Permian flora and fauna. © 2018 Elsevier B.V.
英文关键词	Carbon dioxide; Climatic change; Cuticle; Latest Permian; Mechanistic gas exchange model; Stomatal proxy
语种	英语
scopus关键词	carbon dioxide; climate change; coniferous tree; fossil record; glaciation; model; paleoenvironment; paleosol; Permian; reconstruction; China; Clarkina; Clarkina changxingensis; Coniferophyta
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151039
作者单位	School of Earth Science, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; School of Natural Sciences, Department of Botany, Trinity College Dublin, Dublin 2, Ireland; School of Biology and Environmental Science, Earth Institute, University College Dublin, Belfield, Dublin, Ireland
推荐引用方式 GB/T 7714	Li H.,Yu J.,McElwain J.C.,et al. Reconstruction of atmospheric CO 2 concentration during the late Changhsingian based on fossil conifers from the Dalong Formation in South China[J],2019,519.
APA	Li H.,Yu J.,McElwain J.C.,Yiotis C.,&Chen Z.-Q..(2019).Reconstruction of atmospheric CO 2 concentration during the late Changhsingian based on fossil conifers from the Dalong Formation in South China.Palaeogeography, Palaeoclimatology, Palaeoecology,519.
MLA	Li H.,et al."Reconstruction of atmospheric CO 2 concentration during the late Changhsingian based on fossil conifers from the Dalong Formation in South China".Palaeogeography, Palaeoclimatology, Palaeoecology 519(2019).