%0 Journal Article %T 基于银杏(Ginkgo)与水杉(Metasequoia)叶化石气孔指数的新生代大气CO₂浓度记录
Cenozoic CO₂ Concentration History Based on Ginkgo and Metasequoia Stomatal Index %A 王雨晴 %J Climate Change Research Letters %P 774-786 %@ 2168-5703 %D 2023 %I Hans Publishing %R 10.12677/CCRL.2023.124081 %X 大气CO2浓度与地球气候变化有密切的关系，通过重建高精度、高分辨率的古大气CO₂浓度探索大气CO₂浓度与气候变化之间的关系是当今地质学、古生物学等领域研究的热点之一。银杏(Ginkgo)与水杉(Metasequoia)是两类广为人知的孑遗植物，其叶化石的气孔指数是重建新生代古大气CO₂浓度常用的代用指标。但是，不同学者的研究在气孔指数计数方法、古大气CO₂浓度转换等过程中的标准并不统一，导致重建的古大气CO₂浓度误差较大。因此，本研究对前人已发表的银杏和水杉叶化石的研究进行整理，共收集92个银杏和26个水杉叶片化石气孔指数数据，按照统一的方法重建新生代各个时期的大气CO₂浓度，并进一步探讨新生代大气CO₂浓度变化与古温度变化之间的关系。
The variation of atmospheric CO₂ concentration is believed closely related to the present global warming, and paleo-CO₂ reconstruction with high precision and high resolution has become one of the hot topics of geology and paleontology recently. Ginkgo and Metasequoia are two well-known relict taxa, whose leaf fossils are abundant throughout the Cenozoic era, and stomatal index of their leaf fossils is one of the most commonly used paleo-CO₂ proxies. However, different studies have different standards in stomatal index counting methods and paleo-atmospheric CO₂ concentration estimation methods, leading to large inconsistence in their results. In this study, previously published stomatal index data of 92 Ginkgo leaves and 26 Metasequoia leaves were collated, and then the atmospheric CO₂ concentration history of the Cenozoic were reconstructed. The relationship between the Cenozoic atmospheric CO₂ concentration and paleo-temperature was further discussed. %K 气候变化，叶化石，气孔指数，新生代，银杏，水杉
Climate Change %K Fossil Leaf %K Stomata Index %K Cenozoic %K Metasequoia %K Ginkgo %U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=69490