Estimates of late Early Cretaceous atmospheric CO2 from Mongolia based on stomatal and isotopic analysis of Pseudotorellia
文献类型：期刊论文
| 作者 | Zhang, Xiaoqing6,7; Royer, Dana L.7; Shi, Gongle6 ; Ichinnorov, Niiden5; Herendeen, Patrick S.4; Crane, Peter R.2,3; Herrera, Fabiany1
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| 刊名 | AMERICAN JOURNAL OF BOTANY
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| 出版日期 | 2024-07-01 |
| 卷号 | 111期号:7页码:11 |
| 关键词 | Albian Aptian fossil leaf cuticle Ginkgoales leaf-gas exchange model paleoclimate paleo-CO2 proxy |
| ISSN号 | 0002-9122 |
| DOI | 10.1002/ajb2.16376 |
| 通讯作者 | Zhang, Xiaoqing(xzhang04@wesleyan.edu) |
| 英文摘要 | Premise: The Aptian-Albian (121.4-100.5 Ma) was a greenhouse period with global temperatures estimated as 10-15 degrees C warmer than pre-industrial conditions, so it is surprising that the most reliable CO2 estimates from this time are <1400 ppm. This low CO2 during a warm period implies a very high Earth-system sensitivity in the range of 6 to 9 degrees C per CO2 doubling between the Aptian-Albian and today. Methods: We applied a well-vetted paleo-CO2 proxy based on leaf gas-exchange principles (Franks model) to two Pseudotorellia species from three stratigraphically similar samples at the Tevshiin Govi lignite mine in central Mongolia (similar to 119.7-100.5 Ma). Results: Our median estimated CO2 concentration from the three respective samples was 2132, 2405, and 2770 ppm. The primary reason for the high estimated CO2 but with relatively large uncertainties is the very low stomatal density in both species, where small variations propagate to large changes in estimated CO2. Indeed, we found that at least 15 leaves are required before the aggregate estimated CO2 approaches that of the full data set. Conclusions: Our three CO2 estimates all exceeded 2000 ppm, translating to an Earth-system sensitivity (similar to 3-5 degrees C/CO2 doubling) that is more in keeping with the current understanding of the long-term climate system. Because of our large sample size, the directly measured inputs did not contribute much to the overall uncertainty in estimated CO2; instead, the inferred inputs were responsible for most of the overall uncertainty and thus should be scrutinized for their value choices. |
| WOS关键词 | SP-NOV ; EVOLUTION ; CUPRESSACEAE ; TEMPERATURE ; SENSITIVITY ; PINACEAE ; CLIMATE ; RECORD ; LEAVES ; EARTH |
| 资助项目 | National Science Foundation of USA[NSF 20-509] ; National Natural Science Foundation of China[NSFC 42202024] ; Natural Science Foundation of Jiangsu Province, China[BK20221160] ; National Geographic Society[EC-96755R-22] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001274859500003 |
| 出版者 | WILEY |
| 资助机构 | National Science Foundation of USA ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province, China ; National Geographic Society |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/44094]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Zhang, Xiaoqing |
| 作者单位 | 1.Field Museum, Negaunee Integrat Res Ctr, Sci & Educ, Chicago, IL 60605 USA 2.Yale Univ, Yale Sch Environm, New Haven, CT 06511 USA 3.Oak Spring Garden Fdn, Upperville, VA 20184 USA 4.Chicago Bot Garden, Chicago, IL 60022 USA 5.Mongolian Acad Sci, Inst Paleontol, Ulaanbaatar 15160, Mongolia 6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 7.Wesleyan Univ, Dept Earth & Environm Sci, 265 Church St, Middletown, CT 06459 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaoqing,Royer, Dana L.,Shi, Gongle,et al. Estimates of late Early Cretaceous atmospheric CO2 from Mongolia based on stomatal and isotopic analysis of Pseudotorellia[J]. AMERICAN JOURNAL OF BOTANY,2024,111(7):11. |
| APA | Zhang, Xiaoqing.,Royer, Dana L..,Shi, Gongle.,Ichinnorov, Niiden.,Herendeen, Patrick S..,...&Herrera, Fabiany.(2024).Estimates of late Early Cretaceous atmospheric CO2 from Mongolia based on stomatal and isotopic analysis of Pseudotorellia.AMERICAN JOURNAL OF BOTANY,111(7),11. |
| MLA | Zhang, Xiaoqing,et al."Estimates of late Early Cretaceous atmospheric CO2 from Mongolia based on stomatal and isotopic analysis of Pseudotorellia".AMERICAN JOURNAL OF BOTANY 111.7(2024):11. |
入库方式： OAI收割
来源：南京地质古生物研究所
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