气候变化领域集成服务门户(CCPortal): Soil-surface pollen assemblages and quantitative relationships with vegetation and climate from the Inner Mongolian Plateau and adjacent mountain areas of northern China

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DOI	10.1016/j.palaeo.2020.109600
	Soil-surface pollen assemblages and quantitative relationships with vegetation and climate from the Inner Mongolian Plateau and adjacent mountain areas of northern China
	Liu, Lina; Wang, Wei; Chen, Dongxue; Niu, Zhimei; Wang, Yuan; Cao, Xianyong; Ma, Yuzhen
通讯作者	Wang, W (通讯作者)
发表日期	2020
ISSN	0031-0182
EISSN	1872-616X
卷号	543
英文摘要	We statistically analyzed 396 soil-surface pollen samples from the Inner Mongolian Plateau and its adjacent mountain areas of northern China to gain insights into pollen-vegetation-climate. The results of indicator species analysis, canonical correspondence analysis (CCA) and boosted regression tree (BRT) analysis suggest that: 1) soil-surface pollen assemblages can differentiate between desert, steppe, meadow steppe, cool broadleaved forest, cool conifer forest, and temperate forest, but fail to differentiate between steppe and forest steppe; shrub and temperate forest; and temperate broadleaved forest, temperate mixed conifer-broadleaved forest, and eurythermic conifer forest; 2) pollen taxa, with low percentages but frequent occurrences, strongly indicate presence in the vegetation; 3) mean annual precipitation (MAP) is the most dominant variable influencing soil-surface pollen assemblages and the most promising climate variable for quantitative reconstructions. Weighted averaging partial least squares regression (WA-PLS), modern analogue technique (MAT), and boosted regression trees (BRT) were used to construct a series of pollen-climate calibration sets. WA-PLS and MAT outperform BRT under leave-one-out cross-validation. WA-PLS models are less susceptible to spatial auto-correlation than MAT models, making WA-PLS models generally the best choice. Our soil-surface pollen data will contribute to modern pollen data in eastern Asia.
关键词	ALASHAN PLATEAU HOLOCENE PRECIPITATION CALIBRATION SET PAST VEGETATION SUMMER MONSOON HUMAN IMPACT LAKE RECONSTRUCTIONS SEDIMENTS SELECTION
英文关键词	Indicator species analysis; Ordination; BRT; Calibration sets; WA-PLS
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000518707600010
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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/259903
推荐引用方式 GB/T 7714	Liu, Lina,Wang, Wei,Chen, Dongxue,et al. Soil-surface pollen assemblages and quantitative relationships with vegetation and climate from the Inner Mongolian Plateau and adjacent mountain areas of northern China[J]. 中国科学院青藏高原研究所,2020,543.
APA	Liu, Lina.,Wang, Wei.,Chen, Dongxue.,Niu, Zhimei.,Wang, Yuan.,...&Ma, Yuzhen.(2020).Soil-surface pollen assemblages and quantitative relationships with vegetation and climate from the Inner Mongolian Plateau and adjacent mountain areas of northern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,543.
MLA	Liu, Lina,et al."Soil-surface pollen assemblages and quantitative relationships with vegetation and climate from the Inner Mongolian Plateau and adjacent mountain areas of northern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 543(2020).