TY  - JOUR
A1  - Cao, Xianyong
A1  - Herzschuh, Ulrike
A1  - Ni, Jian
A1  - Zhao, Yan
A1  - Böhmer, Thomas
T1  - Spatial and temporal distributions of major tree taxa in eastern continental Asia during the last 22,000 years
T2  - The Holocene : an interdisciplinary journal focusing on recent environmental change
N2  - This study investigates the spatial and temporal distributions of 14 key arboreal taxa and their driving forces during the last 22,000 calendar years before ad 1950 (kyr BP) using a taxonomically harmonized and temporally standardized fossil pollen dataset with a 500-year resolution from the eastern part of continental Asia. Logistic regression was used to estimate pollen abundance thresholds for vegetation occurrence (presence or dominance), based on modern pollen data and present ranges of 14 taxa in China. Our investigation reveals marked changes in spatial and temporal distributions of the major arboreal taxa. The thermophilous (Castanea, Castanopsis, Cyclobalanopsis, Fagus, Pterocarya) and eurythermal (Juglans, Quercus, Tilia, Ulmus) broadleaved tree taxa were restricted to the current tropical or subtropical areas of China during the Last Glacial Maximum (LGM) and spread northward since c. 14.5kyr BP. Betula and conifer taxa (Abies, Picea, Pinus), in contrast, retained a wider distribution during the LGM and showed no distinct expansion direction during the Late Glacial. Since the late mid-Holocene, the abundance but not the spatial extent of most trees decreased. The changes in spatial and temporal distributions for the 14 taxa are a reflection of climate changes, in particular monsoonal moisture, and, in the late Holocene, human impact. The post-LGM expansion patterns in eastern continental China seem to be different from those reported for Europe and North America, for example, the westward spread for eurythermal broadleaved taxa.
KW  - China
KW  - Holocene
KW  - Last Glacial Maximum
KW  - pollen mapping
KW  - vegetation expansion
Y1  - 2015
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/39422
SN  - 0959-6836
SN  - 1477-0911
VL  - 25
IS  - 1
SP  - 79
EP  - 91
PB  - Sage Publ.
CY  - London
ER  -