干旱区生态环境知识资源中心(Arid): Progress, problems and prospects of palynology in reconstructing environmental change in inland arid areas of Asia

Arid

DOI	10.3724/SP.J.1226.2021.20049
	Progress, problems and prospects of palynology in reconstructing environmental change in inland arid areas of Asia
	Zhao, YongTao; Miao, YunFa; Lei, Yan; Cao, XianYong; Xiang, MingXing
通讯作者	Miao, YF (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China. ; Miao, YF (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2021
卷号	13 期号:4 页码:271-291
英文摘要	Studying the climatic and environmental changes on different time scales in inland arid regions of Asia can greatly improve our understanding of climatic influences for the Qinghai-Tibet Plateau in the context of global change. Pollen, as a remnant of seed plants, is sensitive to environmental factors including precipitation, temperature and altitude, and is a classic proxy in environmental reconstruction. In the last two decades, great progress in the application of palynology to inland areas of Asia has highlighted the role of palynology in paleoclimatic and paleoenvironmental research. The main progress is as follows. (1) On the tectonic time scale of the late Cenozoic, the palaeoclimatological sequence has been established on the basis of pollen percentage, concentration and taxon. Pollen data have revealed a continuous enhancement of drought in the inland arid region of Asia, in contrast to evidence acquired based on other proxies. (2) In the late Quaternary, an increase in herbaceous plants further supports the intensification of drought associated with global cooling. In more detail, the palynological record shows a glacial-interglacial pattern consistent with changes in global ice volume. (3) The Holocene pollen record has been established at a high resolution and across a wide range of inland areas. In general, it presents an arid grassland environment in the early Holocene, followed by the development of woody plants in the mid- to late-Holocene climate optimum. This pattern is related to moisture changes in areas dominated by the westerlies. There are also significant regional differences in the pattern and amplitude of vegetation response to the Holocene environment. (4) Modern pollen studies based on vegetation surveys, meteorological data and statistics show that topsoil palynology can better reflect regional vegetation types (e. g., grassland, meadow, desert). Drier climates yield higher pollen contents of drought-tolerant plants such as Chenopodioideae, Ephedra, and Nitriaria, while contents of Artemisia and Poaceae are greater under humid climates. Besides these achievements, problems remain in palynological research: for example, pollen extraction, identification, interpretation, and quantitative reconstruction. In the future, we encourage strengthened interdisciplinary cooperation to improve experimental methods and innovation. Firstly, we should strengthen palynological classification and improve the skill of identification; secondly, laboratory experiments are needed to better constrain pollen transport dynamics in water and air; thirdly, more rigorous mathematical principles will improve the reliability of reconstructions and deepen the knowledge of plant geography; and finally, new areas and methods in palynology should be explored, for example DNA, UV-B and isotopic analysis. It is expected that palynology will continue to develop, and we hope it will continue to play an important role in the study of past climatic and environmental changes.
英文关键词	Palynology inland arid areas Late Cenozoic Quaternary Holocene modern environmental processes
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000686566700001
WOS关键词	WESTERN QAIDAM BASIN ; MODERN POLLEN ASSEMBLAGES ; HOLOCENE MOISTURE EVOLUTION ; CHINESE LOESS PLATEAU ; NORTH-CENTRAL CHINA ; RED CLAY SEQUENCE ; TIBETAN PLATEAU ; SURFACE POLLEN ; CLIMATE-CHANGE ; TIANSHAN MOUNTAINS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364640
作者单位	[Zhao, YongTao; Miao, YunFa; Lei, Yan; Xiang, MingXing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China; [Miao, YunFa; Lei, Yan; Cao, XianYong; Xiang, MingXing] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Cao, XianYong] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhao, YongTao,Miao, YunFa,Lei, Yan,et al. Progress, problems and prospects of palynology in reconstructing environmental change in inland arid areas of Asia[J]. 中国科学院青藏高原研究所,2021,13(4):271-291.
APA	Zhao, YongTao,Miao, YunFa,Lei, Yan,Cao, XianYong,&Xiang, MingXing.(2021).Progress, problems and prospects of palynology in reconstructing environmental change in inland arid areas of Asia.SCIENCES IN COLD AND ARID REGIONS,13(4),271-291.
MLA	Zhao, YongTao,et al."Progress, problems and prospects of palynology in reconstructing environmental change in inland arid areas of Asia".SCIENCES IN COLD AND ARID REGIONS 13.4(2021):271-291.