TY  - JOUR
A1  - Tian, Fang
A1  - Cao, Xianyong
A1  - Dallmeyer, Anne
A1  - Lohmann, Gerrit
A1  - Zhang, Xu
A1  - Ni, Jian
A1  - Andreev, Andrei
A1  - Anderson, Patricia M.
A1  - Lozhkin, Anatoly V.
A1  - Bezrukova, Elena
A1  - Rudaya, Natalia
A1  - Xu, Qinghai
A1  - Herzschuh, Ulrike
T1  - Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka BP
JF  - Vegetation History and Archaeobotany
N2  - Recent global warming is pronounced in high-latitude regions (e.g. northern Asia), and will cause the vegetation to change. Future vegetation trends (e.g. the "arctic greening") will feed back into atmospheric circulation and the global climate system. Understanding the nature and causes of past vegetation changes is important for predicting the composition and distribution of future vegetation communities. Fossil pollen records from 468 sites in northern and eastern Asia were biomised at selected times between 40 cal ka bp and today. Biomes were also simulated using a climate-driven biome model and results from the two approaches compared in order to help understand the mechanisms behind the observed vegetation changes. The consistent biome results inferred by both approaches reveal that long-term and broad-scale vegetation patterns reflect global- to hemispheric-scale climate changes. Forest biomes increase around the beginning of the late deglaciation, become more widespread during the early and middle Holocene, and decrease in the late Holocene in fringe areas of the Asian Summer Monsoon. At the southern and southwestern margins of the taiga, forest increases in the early Holocene and shows notable species succession, which may have been caused by winter warming at ca. 7 cal ka bp. At the northeastern taiga margin (central Yakutia and northeastern Siberia), shrub expansion during the last deglaciation appears to prevent the permafrost from thawing and hinders the northward expansion of evergreen needle-leaved species until ca. 7 cal ka bp. The vegetation-climate disequilibrium during the early Holocene in the taiga-tundra transition zone suggests that projected climate warming will not cause a northward expansion of evergreen needle-leaved species.
KW  - Siberia
KW  - China
KW  - Northern Asia
KW  - Model-data comparison
KW  - Pollen
KW  - Permafrost
KW  - Vegetation-climate disequilibrium
Y1  - 2018
U6  - https://doi.org/10.1007/s00334-017-0653-8
SN  - 0939-6314
SN  - 1617-6278
VL  - 27
IS  - 2
SP  - 365
EP  - 379
PB  - Springer
CY  - New York
ER  - 
TY  - JOUR
A1  - Li, Huashu
A1  - Liu, Xingqi
A1  - Herzschuh, Ulrike
A1  - Cao, Xianyong
A1  - Yu, Zhitong
A1  - Wang, Yong
T1  - Vegetation and climate changes since the middle MIS 3 inferred from a Wulagai Lake pollen record, Inner Mongolia, Northeastern China
JF  - Review of palaeobotany and palynology : an international journal
N2  - The climate conditions during Marine Isotope Stage (MIS) 3 were similar to present-day conditions, but whether humidity then exceeded present levels is debated, and the driving mechanisms of palaeoclimate evolution since MIS 3 remain unclear. Here, we use pollen data from Wulagai Lake, Inner Mongolia, to reconstruct vegetation and climate changes since the middle MIS 3. The steppe biome is reconstructed as the first dominant biome and the desert biome as the second, and the results show that the vegetation was steppe over the last 43,800 years. Poaceae, Artemisia, Caryophyllaceae and Humulus were abundant from middle to late MIS 3, indicating humid climate conditions. As drought-tolerant species such as Hippophae, Nitraria and Chenopodiaceae spread during MIS 2, the climate became arid. The Holocene is characterized by the dominance of steppe with mixed coniferous-broadleaved forests in the Greater Hinggan Range, and the desert biome retains high affinity scores, indicating that the climate was semi-arid. The climate from middle to late MIS 3 was wetter than in the Holocene; this shift was related to changes in the Northern Hemisphere's solar insolation and ice volume. The humid conditions during MIS 3 were attributed to strong ice–albedo feedback, which led to evaporation that was less than the precipitation. The enhanced evaporation caused by increased solar insolation and decreased ice volume might have exceeded the precipitation during the Holocene and resulted in low effective humidity in the Wulagai Lake basin.
KW  - Pollen
KW  - Biome
KW  - Ice volume
KW  - Solar insolation
Y1  - 2018
U6  - https://doi.org/10.1016/j.revpalbo.2018.12.006
SN  - 0034-6667
SN  - 1879-0615
VL  - 262
SP  - 44
EP  - 51
PB  - Elsevier
CY  - Amsterdam
ER  -