干旱区生态环境知识资源中心(Arid): Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the Arid Central Asia

Arid

DOI	10.1016/j.palaeo.2020.109744
	Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the Arid Central Asia
	Zhang, Dongliang; Chen, Xi; Li, Yaoming; Zhang, Shengrui
通讯作者	Zhang, DL
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	550
英文摘要	This study reconstructed the vegetation dynamics and associated climate change of the past similar to 4100 years based on the pollen data from a short peat core (i.e., KLSZ-2) in Kelashazi Peat (48.12 degrees N, 88.37 degrees E, 2422 m a.s.l.) in the Altai Mountains. The reconstructed vegetation and climate were then stacked with those from a longer peat core (i.e., KLSZ-1) to evaluate the vegetation dynamics and associated climate change of the entire Holocene and to examine the delta C-13(cellulose)- and delta O-18(cellulose)-based temperature reconstructions in the same peat. This study shows that vegetation in Kelashazi valley was dominated by alpine meadows before -8200 cal. yr BP, by taiga forests at similar to 8200-similar to 5600 cal. yr BP, and by an expansion of alpine meadows since similar to 5600 cal. yr BP. This study also examined the vegetation dynamics and associated climate in the context of the entire Altai Mountains and the surrounding areas. Our examination suggests that the forest expansion in high elevations was initiated when the temperature reached a threshold level during the early Holocene, and the forest expansion in low elevations (i.e., below the down treeline) was initiated when the moisture reached a threshold level during the middle Holocene or even late Holocene. It is also notable that the forest expansion at low elevations appears to have been longitude-dependent, i.e., time transgressive eastward. A possible mechanism to explain the longitude-dependency is that a gradual shrinking trend of the Siberian High linked to the Holocene increase in winter insolation allowed the domination of the water vapor-enriched Westerlies to gradually encroach eastward.
英文关键词	Peat Pollen Altai Mountains Siberian High Westerlies
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000536187800006
WOS关键词	NORTHERN XINJIANG ; ATMOSPHERIC CIRCULATION ; MOISTURE EVOLUTION ; SURROUNDING AREAS ; WETTING TREND ; LOESS SECTION ; POLLEN DATA ; MONSOON ; RECORD ; LAKE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324568
作者单位	[Zhang, Dongliang; Chen, Xi; Li, Yaoming] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, 818 Beijing South Rd, Urumqi 830011, Peoples R China; [Zhang, Dongliang; Chen, Xi; Li, Yaoming] Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, 818 Beijing South Rd, Urumqi 830011, Peoples R China; [Zhang, Shengrui] Hebei Normal Univ, Coll Resource & Environm Sci, 20 East Rd, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Dongliang,Chen, Xi,Li, Yaoming,et al. Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the Arid Central Asia[J]. 中国科学院新疆生态与地理研究所,2020,550.
APA	Zhang, Dongliang,Chen, Xi,Li, Yaoming,&Zhang, Shengrui.(2020).Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the Arid Central Asia.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,550.
MLA	Zhang, Dongliang,et al."Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the Arid Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 550(2020).