干旱区研究

Arid Zone Research >

2022 , Vol. 39 >Issue 3: 667 - 675

DOI: https://doi.org/10.13866/j.azr.2022.03.01

Changes of pollen taxa diversity in the arid Central Asia under the Holocene Westerlies Mode: A case study of the Altai Mountains

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  • 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
    2. Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2021-12-06

  Revised date: 2022-01-13

  Online published: 2022-05-30

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Abstract

Modern climate change poses a huge threat to plants in the arid Central Asia. Due to the short instrumental interval, we are unable to better understand the long time-scale relationship between plant diversities and climate change in this region. However, pollen records in the geological archives provide us an opportunity to understand the existence, distribution and diversity of plants in the past. In this study, we selected three pollen sequences from different elevations (Halasazi Peat, Narenxia Peat and Kanas Lake) in the Altai Mountains to investigate the characteristics of plant diversities and their response patterns to Holocene climate change. The results revealed that the changes of pollen taxa diversity in the Altai Mountains showed a unique pattern. As the climate was warming in the early Holocene, the upper forest limits began to migrate upward, leading to an increase in pollen taxa diversity at high elevations. In the middle Holocene, the climate was warm and wet, and the upward and downward migration of the upper and lower forest limits resulted in higher diversities at high and low elevations, but the lower diversities in the taiga-dominated forest belt mainly resulted from a decreasing species evenness. In the late Holocene, the climate became cooler and wetter, and the upper forest limits moved downward, leading to a significant increase in diversities at middle elevations. The largest changes of plant diversities were observed in the forest belt during the Holocene, which means this belt is the most sensitive and vulnerable area for climate response. This study not only helps us understand the response model of mountain vegetation belt to Holocene climate change, and also provides key evidence for exploring the history of mountain vegetation migration in the arid Central Asia.

Key words： Holocene climate; pollen taxa diversity; Altai Mountains; arid zone; Central Asia

Cite this article

ZHANG Dongliang . Changes of pollen taxa diversity in the arid Central Asia under the Holocene Westerlies Mode: A case study of the Altai Mountains[J]. Arid Zone Research, 2022 , 39(3) : 667 -675 . DOI: 10.13866/j.azr.2022.03.01

References

[1] Steffen W, Rockström J, Richardson K, et al. Trajectories of the earth system in the Anthropocene[J]. Proceedings of the National Academy of Sciences, 2018, 115(33): 8252-8259.
[2] Dawson T P, Jackson S T, House J I, et al. Beyond predictions: Biodiversity conservation in a changing climate[J]. Science, 2011, 332(6025): 53-58.
[3] Urban M C, Bocedi G, Hendry A P, et al. Improving the forecast for biodiversity under climate change[J]. Science, 2016, 353(6304): 1-10.
[4] Foden W B, Young B E, Akçakaya H R, et al. Climate change vulnerability assessment of species[J]. Wiley Interdisciplinary Reviews: Climate Change, 2019, 10(1): e551.
[5] Fordham D A, Jackson S T, Brown S C, et al. Using paleo-archives to safeguard biodiversity under climate change[J]. Science, 2020, 369: eabc5654.
[6] Weng C Y, Hooghiemstra H, Duivenvoorden J F. Challenges in estimating past plant diversity from fossil pollen data: Statistical assessment, problems, and possible solutions[J]. Divers Distribution, 2006, 12: 310-318.
[7] Liu H Y, Park Williams A, Allen C D, et al. Rapid warming accelerates tree growth decline in semi-arid forests of Inner Asia[J]. Global Change Biology, 2013, 19: 2500-2510.
[8] Weng C, Hooghiemstra H, Duivenvoorden J F. Response of pollen diversity to the climate-driven altitudinal shift of vegetation in the Colombian Andes[J]. Philosophical Transactions of the Royal Society B: Biological Sciences, 2007, 362(1478): 253-262.
[9] Franco A M, Hill J K, Kitschke C, et al. Impacts of climate warming and habitat loss on extinctions at species’ low-latitude range boundaries[J]. Global Change Biology, 2006, 12: 1545-1553.
[10] Huang J P, Yu H, Guan X D, et al. Accelerated dryland expansion under climate change[J]. Nature Climate Change, 2016, 6: 166-171.
[11] Zhang D L, Feng Z D. Holocene climate variations in the Altai Mountains and the surrounding areas: A synthesis of pollen records[J]. Earth-Science Reviews, 2018, 185: 847-869.
[12] Chen F H, Yu Z, Yang M, et al. Holocene moisture evolution in arid Central Asia and its out-of-phase relationship with Asian monsoon history[J]. Quaternary Science Reviews, 2008, 27: 351-364.
[13] Cheng Y, Liu H, Wang H, et al. Climate-driven Holocene migration of forest-steppe ecotone in the Tien Mountains[J]. Forests, 2020, 11(11): 1139.
[14] 张芸, 孔昭宸, 阎顺, 等. 新疆天山北坡地区中晚全新世古生物多样性特征[J]. 植物生态学报, 2005, 29(5): 836-844.
[14] [ Zhang Yun, Kong Zhaocheng, Yan Shun, et al. Paleo-biodiversity at the northern piedmont of Tianshan Mountains in Xinjiang during the Middle to Late Holocene[J]. Acta Phytoecologica Sinica, 2005, 29(5): 836-844. ]
[15] Zhang D L, Chen X, Li Y M, et al. Holocene moisture variations in the arid Central Asia: New evidence from the southern Altai Mountains of China[J]. Science of the Total Environment, 2020, 735: 139545.
[16] Wang W, Zhang D L. Holocene vegetation evolution and climatic dynamics inferred from an ombrotrophic peat sequence in the southern Altai Mountains within China[J]. Global and Planetary Change, 2019, 172: 10-22.
[17] Zhang D L, Chen X, Li Y M, et al. Holocene vegetation dynamics and associated climate changes in the Altai Mountains of the arid Central Asia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2020, 550: 109744.
[18] Feng Z D, Sun A Z, Abdusalih N, et al. Vegetation changes and associated climatic changes in the southern Altai Mountains within China during the Holocene[J]. Holocene, 2017, 27(5): 683-693.
[19] Huang X Z, Peng W, Rudaya N, et al. Holocene vegetation and climate dynamics in the Altai Mountains and surrounding areas[J]. Geophysical Research Letters, 2018, 45(13): 6628-6636.
[20] Zhang D L, Yang Y P, Ran M, et al. Vegetation dynamics and its response to climate change during the past 2000 years in the Altai Mountains, northwestern China[J]. Frontiers of Earth Science, 2021, doi.10.1007/s11707-021-0906-9
[21] Zhang D L, Lan B, Yang Y P. Comparison of precipitation variations at different time scales in the northern and southern Altai Mountains[J]. Acta Geographica Sinica, 2017, 72(9): 1569-1579.
[22] Blyakharchuk T, Chernova N. Vegetation and climate in the western Sayan Mts according to pollen data from Lugovoe Mire as a background for prehistoric cultural change in southern Middle Siberia[J]. Quaternary Science Reviews, 2013, 75: 22-42.
[23] 袁国映. 阿尔泰山西部地区的垂直自然带[J]. 地理学报, 1986, 41(1): 32-40.
[23] [ Yuan Guoying. The vertical zonation of the western Altay MTS[J]. Acta Geographica Sinica, 1986, 41(1): 32-40. ]
[24] 李泉, 赵艳. 基于孢粉组合定量重建古植物多样性的方法与进展[J]. 第四纪研究, 2018, 38(4): 821-829.
[24] [ Li Quan, Zhao Yan. Quantitative methods and progress of paleofloristic diversity reconstruction based on pollen assemblages[J]. Quaternary Sciences, 2018, 38(4): 821-829. ]
[25] Prentice I, Cramer W, Harrison S, et al. A global Biome model based on plant physiology and dominance, soil properties and climate[J]. Journal of Biogeograph, 1992, 19(2): 117-134.
[26] Prentice I, Guiot J, Huntley B, et al. Reconstructing biomes from palaeoecological data: A general method and its application to European pollen data at 0 and 6 ka[J]. Climate Dynamics, 1996, 12 (3): 185-194.
[27] Walker M J C, Berkelhammer M, Björck S, et al. Formal subdivision of the Holocene series/epoch: A discussion paper by a working group of INTIMATE (integration of ice core, marine and terrestrial records) and the subcommission on Quaternary stratigraphy (international commission on stratigraphy)[J]. Journal of Quaternary Science, 2012, 27: 649-659.
[28] Marcott S, Shakun J, Clark P, et al. A reconstruction of regional and global temperature for the past 11300 years[J]. Science, 2013, 339: 1198-1201.
[29] Zhang D L, Huang X Z, Liu Q, et al. Holocene fire records and their drivers in the westerlies-dominated Central Asia[J]. Science of the Total Environment, 2022, 833: 155153.
[30] Bush M B, Silman M R, Urrego D H. 48000 years of climate and forest change in a plant species diversity hot spot[J]. Science, 2004, 303: 827-829.
[31] Li H, Li Z, Chen Y, et al. Drylands face potential threat of robust drought in the CMIP6 SSPs scenarios[J]. Environmental Research Letters, 2021, 16(11): 114004.
[32] Hammer O, Harper D A, Ryan P D. Palaeontological statistics software package for education and data analysis[J]. Palaeontologia Electronica, 2001, 4(1): 9.
[33] Giesecke T, Wolters S, Jahns S, et al. Exploring Holocene changes in palynological richness in northern Europe-Did postglacial immigration matter?[J]. PLoS One, 2012, 7(12): e51624.
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