气候变化领域集成服务门户(CCPortal): Late Holocene (Meghalayan)palaeoenvironmental evolution inferred from multi-proxy-studies of lacustrine sediments from the Dayan Nuur region of Mongolia

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DOI	10.1016/j.palaeo.2019.05.021
	Late Holocene (Meghalayan)palaeoenvironmental evolution inferred from multi-proxy-studies of lacustrine sediments from the Dayan Nuur region of Mongolia
	Unkelbach J.; Kashima K.; Enters D.; Dulamsuren C.; Punsalpaamuu G.; Behling H.
发表日期	2019
ISSN	0031-0182
起始页码	1
结束页码	14
卷号	530
英文摘要	The ‘Altai Tavan Bogd’ National Park, located between 2000 m and 4000 m a.s.l. in the north-western part of the Mongolian Altai, is a forest-steppe ecosystem in Central Asia which is noticeable because of its extreme continental and high-altitude conditions. Its vegetation is very sensitive to environmental changes and impact by nomadic people. To reconstruct the dynamics of this forest-steppe ecosystem, a broad approach was taken employing multi-proxy analyses including the analysis of pollen, spores, non-pollen palynomorphs, charcoal and diatoms, as well as XRF scanning of a lacustrine sediment core of a small and shallow lake located south of Dayan Nuur. Five radiocarbon dates indicate a record spanning the last 4375 years. Between 4310 and 1040 cal yr BP, the vegetation was characterized by a mixture of alpine meadow and moist true steppe communities as well as forested areas with Larix sibirica, Pinus sibirica and Picea obovata stands. Starting around 2350 cal yr BP, a substantially greater and/or denser forest occurrence can be inferred. A marked forest decline after 1040 cal yr BP and the loss of Pinus sibirica and Picea obovata near the study area proceeded in accordance with a significantly higher abundance of large herbivores and a strong indication of nomadic people in the area as inferred from coprophilous fungi. One period of markedly increased fire activity is found from 640 to 550 cal yr BP. For the latest Holocene period, the records of non-pollen palynomorphs and diatoms suggest a rise of the lake water level. These contrasting trends of forest decline despite higher water availability may reflect the considerable human impact of the nomadic population and their cattle on the ecosystem in the ‘Altai Tavan Bogd’ National Park and Central Asia in general. © 2019 Elsevier B.V.
英文关键词	Climate warming; Forest decline; Forest-steppe dynamics; Mongolian Altai; Palynological analysis; Settlement history
语种	英语
scopus关键词	abundance; anthropogenic effect; cattle; charcoal; climate variation; dicotyledon; forest dynamics; forest-steppe; fungus; Holocene; lacustrine deposit; lake water; meadow; nomadic people; paleoenvironment; palynology; pollen; proxy climate record; sediment core; water availability; Central Asia; Mongolia; Bacillariophyta; Bos; Fungi; Larix sibirica; Picea obovata; Pinus sibirica
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150911
作者单位	Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Goettingen, Untere Karspüle 2, Goettingen, 37073, Germany; Department of Earth and Planetary Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan; Institute of Geography, University of Bremen, GEOPOLAR, Bremen, 28359, Germany; Lower Saxony Institute for Historical Coastal Research, Wilhelmshaven, 26382, Germany; Department of Plant Ecology, Albrecht-von-Haller Institute for Plant Sciences, University of Goettingen, Untere Karspüle 2, Goettingen, 37073, Germany; Applied Vegetation Ecology, University of Freiburg, Tennenbacher Str. 4, Freiburg, 79106, Germany; Department of Biology, Mongolian State University of Education, Baga Toiruu-14, Ulaanbaatar, 210648, Mongolia
推荐引用方式 GB/T 7714	Unkelbach J.,Kashima K.,Enters D.,et al. Late Holocene (Meghalayan)palaeoenvironmental evolution inferred from multi-proxy-studies of lacustrine sediments from the Dayan Nuur region of Mongolia[J],2019,530.
APA	Unkelbach J.,Kashima K.,Enters D.,Dulamsuren C.,Punsalpaamuu G.,&Behling H..(2019).Late Holocene (Meghalayan)palaeoenvironmental evolution inferred from multi-proxy-studies of lacustrine sediments from the Dayan Nuur region of Mongolia.Palaeogeography, Palaeoclimatology, Palaeoecology,530.
MLA	Unkelbach J.,et al."Late Holocene (Meghalayan)palaeoenvironmental evolution inferred from multi-proxy-studies of lacustrine sediments from the Dayan Nuur region of Mongolia".Palaeogeography, Palaeoclimatology, Palaeoecology 530(2019).