Evolutionary History of Atmospheric CO2 during the Late Cenozoic from Fossilized Metasequoia Needles

被引：22

作者：

Wang, Yuqing ^{[1
,2
]}

Momohara, Arata ^{[4
]}

Wang, Li ^{[1
,5
]}

Lebreton-Anberree, Julie ^{[1
,2
]}

Zhou, Zhekun ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650204, Peoples R China

[4] Chiba Univ, Grad Sch Hort, Chiba 2718510, Japan

[5] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Cent Lab, Mengla 666303, Peoples R China

来源：

PLOS ONE | 2015年 / 10卷 / 07期

基金：

中国国家自然科学基金;

关键词：

STOMATAL FREQUENCY; MIDDLE EOCENE; REVISED MODEL; ICE VOLUME; SW CHINA; CLIMATE; CARBON; PLIOCENE; ISOTOPE; GINKGO;

D O I：

10.1371/journal.pone.0130941

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The change in ancient atmospheric CO2 concentrations provides important clues for understanding the relationship between the atmospheric CO2 concentration and global temperature. However, the lack of CO2 evolution curves estimated from a single terrestrial proxy prevents the understanding of climatic and environmental impacts due to variations in data. Thus, based on the stomatal index of fossilized Metasequoia needles, we reconstructed a history of atmospheric CO2 concentrations from middle Miocene to late Early Pleistocene when the climate changed dramatically. According to this research, atmospheric CO2 concentration was stabile around 330-350 ppmv in the middle and late Miocene, then it decreased to 278-284 ppmv during the Late Pliocene and to 277-279 ppmv during the Early Pleistocene, which was almost the same range as in preindustrial time. According to former research, this is a time when global temperature decreased sharply. Our results also indicated that from middle Miocene to Pleistocene, global CO2 level decreased by more than 50 ppmv, which may suggest that CO2 decrease and temperature decrease are coupled.

引用

页数：15