Articles | Volume 16, issue 6 
            
                
                    
            
            
            https://doi.org/10.5194/cp-16-2255-2020
                    © Author(s) 2020. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-16-2255-2020
                    © Author(s) 2020. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
Aridification signatures from fossil pollen indicate a drying climate in east-central Tibet during the late Eocene
Qin Yuan
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            University of Chinese Academy of Sciences, Beijing, China
                                        
                                    
                                            Department of Palaeobiology, Swedish Museum of Natural History, Stockholm, Sweden
                                        
                                    Natasha Barbolini
CORRESPONDING AUTHOR
                                            
                                    
                                            Department of Ecology, Environment and Plant Sciences and Bolin Centre for Climate Research,  Stockholm University, Stockholm, Sweden
                                        
                                    
                                            Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics,  University of Amsterdam, Amsterdam, the Netherlands
                                        
                                    Catarina Rydin
                                            Department of Ecology, Environment and Plant Sciences and Bolin Centre for Climate Research,  Stockholm University, Stockholm, Sweden
                                        
                                    
                                            The Bergius Foundation, The Royal Swedish Academy of Sciences, Stockholm, Sweden
                                        
                                    Dong-Lin Gao
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Hai-Cheng Wei
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Qi-Shun Fan
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Zhan-Jie Qin
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Yong-Sheng Du
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Jun-Jie Shan
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            University of Chinese Academy of Sciences, Beijing, China
                                        
                                    Fa-Shou Shan
                                            Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    
                                            Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes,  Chinese Academy of Sciences, Xining, China
                                        
                                    Vivi Vajda
                                            Department of Palaeobiology, Swedish Museum of Natural History, Stockholm, Sweden
                                        
                                    Data sets
Supplementary dataset: Aridification signatures from middle–late Eocene pollen indicate widespread drying across the Tibetan Plateau after 40 Ma Qin Yuan and Natasha Barbolini https://doi.org/10.17632/xvp68wsd2p.4
Short summary
            Fossil pollen and spores reveal that a strongly seasonal steppe–desert ecosystem existed in the Nangqian Basin, east-central Tibet during the late Eocene (41.2–37.8 Ma). Vegetation was characterized by drought-tolerant shrubs, diverse ferns, and broad-leaved forests. The climate warmed temporarily, then rapidly aridified thereafter due to westward regression of the proto-Paratethys Sea from Eurasia. Sea retreat was a main driver of widespread long-term Asian aridification during the late Eocene.
            Fossil pollen and spores reveal that a strongly seasonal steppe–desert ecosystem existed in the...