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

Abstract

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.

Keywords

pollen analysis / vegetation dynamics / past 2000 years / Altai mountains / northwestern China

References

[1] An C B, Wang W, Duan F T, Huang W, Chen F H (2017). Environmental changes and cultural exchange between East and West along the Silk Road in arid Central Asia. Acta Geogr Sin, 5: 875–891 (in Chinese)

[2] Alekseev A Y, Bokovenko N A, Boltrik Y, Chugunov K A, Cook G, Dergachev V A, Kovalyukh N, Possnert G, van der Plicht J, Scott E M, Sementsov A, Skripkin V, Vasiliev S, Zaitseva G (2001). A Chronology of the Scythian antiquities of Eurasia based on new archaeological and ¹⁴C data. Radiocarbon, 43(2B): 1085–1107

[3] Birks H J B, Gordon A D (1985). Numerical Methods in Quaternary Analysis. London: Academic Press

[4] Blaauw M (2010) Methods and code for ‘classical’ age-modelling of radiocarbon sequences. Quat. Geochro. 5 (5): 512–518

[5] Blyakharchuk T A, Wright H E, Borodavko P S, van der Knaap W O, Ammann B (2004). Late glacial and Holocene vegetation changes on the Ulagan high-mountains plateau, Altai Mountains, southern Siberia. Palaeogeogr Palaeoclimatol Palaeoecol, 209(1-4): 259–279

[6] Blyakharchuk T A, Wright H E, Borodavko P S, van der Knaap W O, Ammann B (2008). The role of pingos in the development of the Dzhangyskol lake-pingo complex, central Altai Mountains, southern Siberia. Palaeogeogr Palaeoclimatol Palaeoecol, 257(4): 404–420

[7] Blyakharchuk T A, Wright H E, Borodavko P S, van der Knaap W O, Ammann B (2007). Late glacial and Holocene vegetational history of the Altai Mountains (southwestern Tuva Republic, Siberia). Palaeogeogr Palaeoclimatol Palaeoecol, 245(3-4): 518–534

[8] Blyakharchuk T A, Chernova N A (2013). 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. Quat Sci Rev, 75: 22–42

[9] Blyakharchuk T, Eirikh A, Mitrofanova E, Li H C, Kang S C (2017). High resolution palaeoecological records for climatic and environmental changes during the last 1350 years from Manzherok Lake, western foothills of the Altai Mountains, Russia. Quat Int, 447: 59–74

[10] Borisov O (1957). The Climate of Soviet Union (translated by Sui TK). Beijing: Science Press (in Chinese)

[11] Borisova O K, Novenko E Y, Zelikson E M, Kremenetstki K V (2011). Late glacial and Holocene vegetational and climatic changes in the southern taiga zone of West Siberia according to pollen records from Zhukovskoye peat mire. Quat Int, 237(1–2): 65–73

[12] Büntgen U, Myglan V S, Ljungqvist F C, McCormick M, Di Cosmo N, Sigl M, Jungclaus J, Wagner S, Krusic P J, Esper J, Kaplan O J, de Vaan M A C, Luterbacher J, Wacker L, Tegel W, Kirdyanov A V (2016). Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD. Nat Geosci, 9(3): 231–236

[13] Feng Z D, Sun A Z, Abdusalih N, Ran M, Kurban A, Lan B, Zhang D L, Yang Y P (2017). Vegetation changes and associated climatic changes in the southern Altai Mountains within China during the Holocene. Holocene, 27(5): 683–693

[14] Golden P B (1990). The Peoples of the South Russian Steppes. Cambridge: Cambridge University Press

[15] Han D X, Gao C Y, Liu H X, Yu X F, Li Y H, Cong J X, Wang G P (2020). Vegetation dynamics and its response to climate change during the past 2000 years along the Amur River Basin, Northeast China. Ecol Indic, 117: 106577

[16] Huang X Z, Chen C Z, Jia W N, An C B, Zhou A F, Zhang J W, Jin M, Xia D S, Chen F H, Grimm E C (2015). Vegetation and climate history reconstructed from an alpine lake in central Tienshan Mountains since 8.5 ka BP. Palaeogeogr Palaeoclimatol Palaeoecol, 432: 36–48

[17] Huang X Z, Peng W, Rudaya N, Grimm E C, Chen X M, Cao X Y, Zhang J, Pan X D, Liu S S, Chen C Z, Chen F H (2018). Holocene vegetation and climate dynamics in the Altai Mountains and surrounding areas. Geophys Res Lett, 45(13): 6628–6636

[18] Huntington E (1907). Lop-Nor. A Chinese Lake. Part I. The Unexplored Salt Desert of Lop. Bull Am Geogr Soc, 39(2): 65–77

[19] Jenkins G (1974). A note on climatic cycles and the rise of Chinggis Khan. Central Asiatic Journal, 18(4): 217–226

[20] Li Y, Zhang D, Andreeva M, Li Y, Fan L, Tang M (2020). Temporal-spatial variability of modern climate in the Altai Mountains during 1970-2015. PLoS One, 15(3): e0230196

[21] Luo C X, Zheng Z, Tarasov P, Nakagawa T, Pan A D, Xu Q H, Lu H Y, Huang K Y (2010). A potential of pollen-based climate reconstruction using a modern pollen-climate dataset from arid northern and western China. Rev Palaeobot Palynol, 160(3–4): 111–125

[22] Milkov F N, Gvozdezky N A (1996). Natural Geography of the Soviet Union—A Brief Introduction to the Caucasus of the Soviet Union. Beijing: Commercial Press

[23] PAGES 2k Consortium (2019). Consistent multidecadal variability in global temperature reconstructions and simulations over the Common Era. Nature Geosci, 12: 643–649

[24] Pederson N, Hessl A E, Baatarbileg N, Anchukaitis K J, Di Cosmo N (2014). Pluvials, droughts, the Mongol Empire, and modern Mongolia. Proc Natl Acad Sci USA, 111(12): 4375–4379

[25] Putnam A E, Putnam D E, Andreu-Hayles L, Cook E R, Palmer J G, Clark E H, Wang C, Chen F, Denton G H, Boyle D P, Bassett S D, Birkel S D, Martin-Fernandez J, Hajdas I, Southon J, Garner C B, Cheng H, Broecker W S (2016). Little Ice Age wetting of interior Asian deserts and the rise of the Mongol Empire. Quat Sci Rev, 131: 33–50

[26] Rudaya N, Tarasov P, Dorofeyuk N, Solovieva N, Kalugin I, Andreev A, Daryin A, Diekmann B, Riedel F, Tserendash N, Wagnere M (2009). Holocene environments and climate in the Mongolian Altai reconstructed from the Hoton-Nur pollen and diatom records, a step towards better understanding climate dynamics in Central Asia. Quat Sci Rev, 28(5–6): 540–554

[27] Rudaya N, Nazarova L, Novenko E, Andreev A, Kalugin I, Daryin A, Babich V, Li H C, Shilov P (2016). Quantitative reconstructions of mid- to late holocene climate and vegetation in the north-eastern altai mountains recorded in lake teletskoye. Global Planet Change, 141: 12–24

[28] Steinhilber F, Beer J, Fröhlich C (2009). Total solar irradiance during the Holocene. Geophys Res Lett, 36(19): L19704

[29] TerBraak C J F, Smilauer P (2003). CANOCO Reference Manual and CanoDraw for Windows User’s Guide: Software for Canonical Community Ordination (Version 4.5). Ithaca: Microcomputer Power

[30] Tian F, Herzschuh U, Dallmeyer A, Xu Q, Mischke S, Biskaborn B K (2013). Environmental variability in the monsoon–westerlies transition zone during the last 1200 years: lake sediment analyses from central Mongolia and supra-regional synthesis. Quat Sci Rev, 73: 31–47

[31] Tian F, Herzschuh U, Mischke S, Schlütz F (2014). What drives the recent intensified vegetation degradation in Mongolia-climate change or human activity? Holocene, 24(10): 1206–1215

[32] Wang F, Qia N F, Zhang Y L, Yang H Q (1995). Pollen Flora of China. Beijing: Science Press

[33] Wang W, Zhang D L (2019). Holocene vegetation evolution and climatic dynamics inferred from an ombrotrophic peat sequence in the southern Altai Mountains within China. Global Planet Change, 179: 10–22

[34] Willis K S, Beilman D, Booth R K, Amesbury M, Holmquist J, MacDonald G (2015). Peatland paleohydrology in southern West Siberian Lowlands: comparison of multiple testate amoeba transfer functions, sites, and Sphagnum δ¹³C values. Holocene, 25(9): 1425–1436

[35] Xu H, Zhou K E, Lan J, Zhang G, Zhou X (2019). Arid Central Asia saw mid-Holocene drought. Geology, 47(3): 255–258

[36] Yang Y P, Zhang D L, Lan B, Abdusalih N, Feng Z D (2019a). Peat δ¹³C_celluose-signified moisture variations over the past ~2200 years in the southern Altai Mountains, northwestern China. J Asian Earth Sci, 174: 59–67

[37] Yang Y P, Zhang D L, Sun A, Wang W, Lan B, Feng Z D (2019b). Pollen-based reconstructions of vegetation and climate changes during the late Holocene in the southern Altai Mountains. Holocene, 29(9): 1450–1458

[38] Yu S H, Zheng Z, Kershaw P, Skrypnikova M, Huang K Y (2017). A late Holocene record of vegetation and fire from the Amur Basin, far-eastern Russia. Quat Int, 432: 79–92

[39] Zhang D, Yang Y, Lan B (2018). Climate variability in the northern and southern Altai Mountains during the past 50 years. Sci Rep, 8(1): 3238

[40] Zhang D L, Chen X, Li Y M, Zhang S R (2020a). Holocene vegetation dynamics of the Altai Mountains in the Arid Central Asia. Palaeogeogr Palaeoclimatol Palaeoecol, 550: 109744

[41] Zhang D, Chen X, Li Y, Ran M, Yang Y, Zhang S, Feng Z (2020b). Holocene moisture variations in the Arid Central Asia: new evidence from the southern Altai Mountains of China. Sci Total Environ, 735: 139545

[42] Zhang D L, Chen X, Li Y M, Wang W, Sun A Z, Yang Y P, Ran M, Feng Z D (2020c). Response of vegetation to Holocene evolution of westerlies in the Asian Central Arid Zone. Quat Sci Rev, 229: 106138

[43] Zhang Y, Ma X H, Liu X T, Tong C, Yang P (2018b). Preliminary study on morphology, development process and peat accumulation rate of palsas during the Altai Mountains, northern Xinjiang Uygur Autonomous Region, northwest China. Quat Sci, 38(5): 1221–1232 (in Chinese)

[44] Zheng Z, Huang K Y, Xu Q H, Lu H Y, Cheddadi R, Luo Y L, Beaudouin C, Luo C X, Zheng Y W, Li C H, Wei J H, Du C B (2008). Comparison of climatic threshold of geographical distribution between dominant plants and surface pollen in China. Sci China Earth Sci, 51(8): 1107–1120

[45] Zhou X, Yu J, Spengler R N, Shen H, Zhao K, Ge J, Bao Y, Liu J, Yang Q, Chen G, Weiming Jia P, Li X (2020). 5200-year-old cereal grains from the eastern Altai Mountains redate the trans-Eurasian crop exchange. Nat Plants, 6(2): 78–87

Acknowledgments

This research was financially supported by Western Young Scholar Program-B of Chinese Academy of Sciences (No. 2018-XBQNXZ-B-020), National Natural Science Foundation of China (Grant Nos. 41771234 and 41803024) and Open Fund of State Key Laboratory of Loess and Quaternary Geology (No. SKLLQG2011).

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