气候变化领域集成服务门户(CCPortal): Lake surface sediment pollen dataset for the alpine meadow vegetation type from the eastern Tibetan Plateau and its potential in past climate reconstructions

CCPortal

DOI	10.5194/essd-13-3525-2021
	Lake surface sediment pollen dataset for the alpine meadow vegetation type from the eastern Tibetan Plateau and its potential in past climate reconstructions
	Cao, Xianyong; Tian, Fang; Li, Kai; Ni, Jian; Yu, Xiaoshan; Liu, Lina; Wang, Nannan
通讯作者	Cao, XY (通讯作者)
发表日期	2021
ISSN	1866-3508
EISSN	1866-3516
起始页码	3525
结束页码	3537
卷号	13 期号:7
英文摘要	A modern pollen dataset with an even distribution of sites is essential for pollen-based past vegetation and climate estimations. As there were geographical gaps in previous datasets covering the central and eastern Tibetan Plateau, lake surface sediment samples (n = 117) were collected from the alpine meadow region on the Tibetan Plateau between elevations of 3720 and 5170 m.a.s.l Pollen identification and counting were based on standard approaches, and modern climate data were interpolated from a robust modern meteorological dataset. A series of numerical analyses revealed that precipitation is the main climatic determinant of pollen spatial distribution: Cyperaceae, Ranunculaceae, Rosaceae, and Salix indicate wet climatic conditions, while Poaceae, Artemisia, and Chenopodiaceae represent drought. Model performance of both weighted-averaging partial least squares (WA-PLS) and the random forest (RF) algorithm suggest that this modern pollen dataset has good predictive power in estimating the past precipitation from pollen spectra from the eastern Tibetan Plateau. In addition, a comprehensive modern pollen dataset can be established by combining our modern pollen dataset with previous datasets, which will be essential for the reconstruction of vegetation and climatic signals for fossil pollen spectra on the Tibetan Plateau. Pollen datasets including both pollen counts and percentages for each sample, together with their site location and climatic data, are available at the National Tibetan Plateau Data Center (TPDC; Cao et al., 2021; https://doi.org/10.11888/Paleoenv.tpdc.271191).
关键词	AREA
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000677473700001
来源期刊	EARTH SYSTEM SCIENCE DATA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260329
推荐引用方式 GB/T 7714	Cao, Xianyong,Tian, Fang,Li, Kai,et al. Lake surface sediment pollen dataset for the alpine meadow vegetation type from the eastern Tibetan Plateau and its potential in past climate reconstructions[J]. 中国科学院青藏高原研究所,2021,13(7).
APA	Cao, Xianyong.,Tian, Fang.,Li, Kai.,Ni, Jian.,Yu, Xiaoshan.,...&Wang, Nannan.(2021).Lake surface sediment pollen dataset for the alpine meadow vegetation type from the eastern Tibetan Plateau and its potential in past climate reconstructions.EARTH SYSTEM SCIENCE DATA,13(7).
MLA	Cao, Xianyong,et al."Lake surface sediment pollen dataset for the alpine meadow vegetation type from the eastern Tibetan Plateau and its potential in past climate reconstructions".EARTH SYSTEM SCIENCE DATA 13.7(2021).