Zhao, Y;
Tzedakis, PC;
Li, Q;
Qin, F;
Cui, Q;
Liang, C;
Birks, HJB;
... Guo, Z; + view all
(2020)
Evolution of vegetation and climate variability on the Tibetan Plateau over the past 1.74 million years.
Science Advances
, 6
(19)
, Article eaay6193. 10.1126/sciadv.aay6193.
Preview |
Text
eaay6193.full.pdf - Published Version Download (4MB) | Preview |
Abstract
The Tibetan Plateau exerts a major influence on Asian climate, but its long-term environmental history remains largely unknown. We present a detailed record of vegetation and climate changes over the past 1.74 million years in a lake sediment core from the Zoige Basin, eastern Tibetan Plateau. Results show three intervals with different orbital- and millennial-scale features superimposed on a stepwise long-term cooling trend. The interval of 1.74–1.54 million years ago is characterized by an insolation-dominated mode with strong ~20,000-year cyclicity and quasi-absent millennial-scale signal. The interval of 1.54–0.62 million years ago represents a transitional insolation-ice mode marked by ~20,000- and ~40,000-year cycles, with superimposed millennial-scale oscillations. The past 620,000 years are characterized by an ice-driven mode with 100,000-year cyclicity and less frequent millennial-scale variability. A pronounced transition occurred 620,000 years ago, as glacial cycles intensified. These new findings reveal how the interaction of low-latitude insolation and high-latitude ice-volume forcing shaped the evolution of the Tibetan Plateau climate.
| Type: | Article |
|---|---|
| Title: | Evolution of vegetation and climate variability on the Tibetan Plateau over the past 1.74 million years |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1126/sciadv.aay6193 |
| Publisher version: | https://doi.org/10.1126/sciadv.aay6193 |
| Language: | English |
| Additional information: | This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/), which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10097220 |
Archive Staff Only
 |
View Item |
