DOI: 10.1016/j.quascirev.2019.106138
论文题名: Response of vegetation to Holocene evolution of westerlies in the Asian Central Arid Zone
作者: Zhang D. ; Chen X. ; Li Y. ; Wang W. ; Sun A. ; Yang Y. ; Ran M. ; Feng Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2020
卷: 229 语种: 英语
英文关键词: Asian Central Arid Zones
; Holocene climate
; Pollen
; Vegetation sensitivity
; Westerlies
Scopus关键词: Arid regions
; Expansion
; Forestry
; Global warming
; Stream flow
; Arid zones
; Holocene climate
; Increasing sensitivities
; Northern Hemispheres
; Pollen
; Precipitation change
; Vegetation dynamics
; Westerlies
; Vegetation
; arid region
; cooling
; desert
; global warming
; Holocene
; palynology
; permafrost
; proxy climate record
; steppe
; vegetation cover
; vegetation dynamics
; westerly
; Central Department
; Amaranthaceae
; Artemisia
; Betula
; Picea
; Pinus sibirica
; Pinus sylvestris
英文摘要: Based on 50 pollen sequences inferred from the westerlies-influenced Asian Central Arid Zone, we reconstructed the Holocene vegetation dynamics of four forest types indicated by Picea, Betula, Pinus sibirica and Pinus sylvestris as well as steppe type by Artemisia and desert type by Chenopodiaceae. The sensitivities of these vegetation types to Holocene temperature and precipitation changes were analyzed according to four grouping: temperature, precipitation, latitude and elevation of sites. The results revealed that there was a clear delay of forest expansions in the early Holocene along the S-N gradient, most likely influenced by the existed permafrost extent in the Northern Hemisphere. The increasing precipitation driven by the westerlies in the early Holocene would have first reached the threshold for forest expansion in high-elevation sub-region, but was significantly delay for low-elevation sub-region. Steppe expanded in low-elevation and highland sub-regions in the cooling and wetting late-Holocene. Holocene vegetation dynamics differed across vegetation types with Pinus sibirica and Pinus sylvestris that were very sensitive to westerlies-associated precipitation changes, while Picea and Artemisia were more sensitive to temperature changes. A decreasing sensitivity of forests was found with different types following an evident increase in precipitation and an increasing sensitivity for steppe was observed following a gradual reduction of temperature in the late Holocene. Our research offers new insights into the mechanisms of individualistic responses of plant types and the different responses of vegetation to the Holocene westerlies evolution in the Asian Central Arid Zone and improves our ability to predict the vegetation dynamics (particularly forest) in the Asian Central Arid Zone under global warming conditions. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159618
Appears in Collections: 气候变化与战略
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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, 818 Beijing South Road, Urumqi, 830011, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, 818 Beijing South Road, Urumqi, 830011, China; School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China; College of Environment and Planning, Henan University, Jinming Street, Kaifeng, 475004, China
Recommended Citation:
Zhang D.,Chen X.,Li Y.,et al. Response of vegetation to Holocene evolution of westerlies in the Asian Central Arid Zone[J]. Quaternary Science Reviews,2020-01-01,229