Vegetation dynamics and its response to climate change during the past 2000 years in the Altai Mountains,northwestern China

Dongliang ZHANG; Yunpeng YANG; Min RAN; Bo LAN; Hongyan ZHAO; Qi LIU

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Vegetation dynamics and its response to climate change during the past 2000 years in the Altai Mountains,northwestern China

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Over the past 2000 years,a high-resolution pollen record from the Yushenkule Peat(46°45′-46°57′N,90°46′-90°61′E,2374 m a.s.l.)in the south-eastern Altai Mountains of northwestern China has been used to explore the changes in vegetation and climate.The regional vegetation has been dominated by alpine meadows revealed from pollen diagrams over the past 2000 years.The pollen-based climate was warm and wet during the Roman Warm Period(0-520 AD),cold and wet during the Dark Age Cold Period(520-900 AD),warm and wet during the Medieval Warm Period(900-1300 AD),and cold and dry during the Little Ice Age(1300-1850 AD).Combined with other pollen data from the Altai Mountains,we found that the percentage of arboreal pollen showed a reduced trend along the NW-SE gradient with decreasing moisture and increasing climatic continentality of the Altai Mountains over the past 2000 years;this is consistent with modern distributions of taiga forests.We also found that the taiga(Pinus forest)have spread slightly,while the steppe(Artemisia,Poaceae and Chenopodiaceae)have recovered significantly in the Altai Mountains over the past 2000 years.In addition,the relatively warm-wet climate may promote high grassland productivity and southward expansion of steppe,which favors the formation of Mongol political and military power.

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《地球科学前沿：英文版》 |2022年第2期|513-522|共10页
作者
Dongliang ZHANG; Yunpeng YANG; Min RAN; Bo LAN; Hongyan ZHAO; Qi LIU;
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作者单位

State Key Laboratory of Desert and Oasis Ecology;

Xinjiang Institute of Ecology and Geography;

Chinese Academy of Sciences;

Urumqi 830011;

China;

Research Center for Ecology and Environment of Central Asia;

Chinese Academy of Sciences;

Urumqi 830011;

China;

University of Chinese Academy of Sciences;

Beijing 100049;

China;

State Key Laboratory of Loess and Quaternary Geology;

Institute of Earth Environment;

Chinese Academy of Sciences;

Xi’an 710061;

China;

College of Environment and Planning;

Henan University;

Kaifeng 475004;

China;

Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Ministry of Education);

Henan University;

Kaifeng 475004;

China;

School of Environmental and Chemical Engineering;

Chongqing Three Gorges University;

Chongqing 404000;

China;

School of Earth Science;

Northeast Normal University;

Changchun 130024;

China;

College of Resource and Environmental Sciences;

Xinjiang University;

Urumqi 830046;

China;

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原文格式 PDF
正文语种 chi
中图分类植物学;
关键词
pollen analysis; vegetation dynamics; past 2000 years; Altai mountains; northwestern China;

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Vegetation dynamics and its response to climate change during the past 2000 years in the Altai Mountains,northwestern China

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