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Holocene vegetation dynamics and climatic fluctuations from Shuanghaizi Lake in the Hengduan Mountains, southwestern China
Trivedi, Anjali1; Tang, Ye-Na; Qin, Feng3; Farooqui, Anjum1; Wortley, Alexandra H.; Wang, Yu-Fei; Blackmore, Stephen4; Li, Cheng-Sen; Yao, Yi-Feng
AbstractThe Hengduan Mountains of Southwest China are considered the most biologically diverse temperate ecosystem in the world. Here, we present a similar to 10,000-year pollen record from Shuanghaizi Lake, northwestern Yunnan, which we use to reconstruct vegetation dynamics, climatic fluctuations and variability in the Indian Summer Monsoon (ISM). The results suggest that, between 10,000 and 7900 cal. yr BP, vegetation comprised mainly mixed needle- and broad-leaved forest (mostly Abies, Pinus, Quercus, and Salix), indicating a warm and humid climate, corresponding to a strong ISM. From 7900 to 6900 cal. yr BP, the mixed needle- and broad-leaved forest persisted, while an increase in Abies pollen and decrease in pollen of Pinus and Salix implies a reduction in temperature and precipitation, suggesting a slightly weaker ISM than in the preceding phase. Between 6900 and 2400 cal. yr BP, an expansion of Pinus and Quercus in mixed needle- and broad-leaved forest, together with the first occurrence of the aquatic Potamogeton, suggest a warmer and more humid climate, likely due to the strengthening monsoon, consistent with the Holocene climatic optimum. From 2400 to 970 cal. yr BP, the vegetation shifted to needle-leaved forest with sparse patches of broad-leaved forest, concurrent with a weakening ISM through the middle of this period. During the first half of the period covering 970 to 470 cal. yr BP, Abies and Picea increased and we inferred the lowest temperature and precipitation of the whole study, implying the weakest ISM. In the middle of this period, an expansion of broad-leaved trees including Quercus, Alnus, Betula and Castanopsis plus diverse herbaceous plants suggests that the climate developed towards warmer and more humid conditions, in agreement with a gradual intensification of the ISM. After 470 cal. yr BP, the vegetation became dominated by needle-leaved forest and most broad-leaved elements became intermittent. Although the climate was generally cool and dry in this period, temperature and precipitation gradually increased compared with the previous stage, indicating a slight intensification of the ISM. These findings provide a more detailed understanding of Holocene vegetation dynamics, climatic change, and the evolution of the palaeomonsoon in the Hengduan Mountains biodiversity hotspot, southwestern China.
KeywordAlpine lake Biodiversity Indian summer monsoon Palaeoecology Pollen record Yunnan
Subject AreaGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
Indexed BySCI
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS IDWOS:000591245000044
Publication PlaceAMSTERDAM
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [42077416] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB26000000] ; National Key R&D Program of China [2017YFC0803803] ; Open Research Foundation of State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences [LSEB2020-1, 2020-4] ; 2016 CAS President's International Fellowship Initiative [2016VBC063] ; 2013 CAS-TWAS Visiting Scholarship ; China Scholarship CouncilChina Scholarship Council [201204910043] ; Scottish Government's Rural and Environmental Science and Analytical Services Division
Corresponding Author Emailqinfeng@igsnrr.ac.cn ; ADavey@rbge.org.uk ; wangyf@ibcas.ac.cn ; SBlackmore@rbge.org.uk ; lics@ibcas.ac.cn ; yaoyf@ibcas.ac.cn
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
2.Birbal Sahni Inst Palaeosci, 53 Univ Rd, Lucknow P 226007, Uttar Pradesh, India
3.Sichuan Univ, Sch Hist & Culture Tourism, Chengdu 610064, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A,Dawn Rd, Beijing 100101, Peoples R China
5.Royal Bot Garden Edinburgh, 20a Inverleith Row, Edinburgh E113 SLR, Midlothian, Scotland
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Trivedi, Anjali,Tang, Ye-Na,Qin, Feng,et al. Holocene vegetation dynamics and climatic fluctuations from Shuanghaizi Lake in the Hengduan Mountains, southwestern China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,560.
APA Trivedi, Anjali.,Tang, Ye-Na.,Qin, Feng.,Farooqui, Anjum.,Wortley, Alexandra H..,...&Yao, Yi-Feng.(2020).Holocene vegetation dynamics and climatic fluctuations from Shuanghaizi Lake in the Hengduan Mountains, southwestern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,560.
MLA Trivedi, Anjali,et al."Holocene vegetation dynamics and climatic fluctuations from Shuanghaizi Lake in the Hengduan Mountains, southwestern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 560(2020).
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