DOI: 10.5194/cp-12-241-2016
Scopus记录号: 2-s2.0-84958951402
论文题名: Estimates of late middle Eocene pCO2 based on stomatal density of modern and fossil Nageia leaves
作者: Liu X.Y. ; Gao Q. ; Han M. ; Jin J.H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2016
卷: 12, 期: 2 起始页码: 241
结束页码: 253
语种: 英语
Scopus关键词: Coniferophyta
; Nageia
英文摘要: Atmospheric pCO2 concentrations have been estimated for intervals of the Eocene using various models and proxy information. Here we reconstruct late middle Eocene (42.0-38.5 Ma) pCO2 based on the fossil leaves of Nageia maomingensis Jin et Liu collected from the Maoming Basin, Guangdong Province, China. We first determine relationships between atmospheric pCO2 concentrations, stomatal density (SD) and stomatal index (SI) using "modern" leaves of N. motleyi (Parl.) De Laub, the nearest living species to the Eocene fossils. This work indicates that the SD inversely responds to pCO2, while SI has almost no relationship with pCO2. Eocene pCO2 concentrations can be reconstructed based on a regression approach and the stomatal ratio method by using the SD. The first approach gives a pCO2 of 351.9 6.6 ppmv, whereas the one based on stomatal ratio gives a pCO2 of 537.5 ± 56.5 ppmv. Here, we explored the potential of N. maomingensis in pCO2 reconstruction and obtained different results according to different methods, providing a new insight for the reconstruction of paleoclimate and paleoenvironment in conifers. © Author(s) 2016. 资助项目: NSFC, Sun Yat-sen University
; NSFC, Sun Yat-sen University
; SYSY, Sun Yat-sen University
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49065
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Liu X.Y.,Gao Q.,Han M.,et al. Estimates of late middle Eocene pCO2 based on stomatal density of modern and fossil Nageia leaves[J]. Climate of the Past,2016-01-01,12(2)