干旱区生态环境知识资源中心(Arid): Modern pollen-vegetation coverage relationships and its application for Holocene vegetation reconstructions in the central Tianshan Mountains

Arid

DOI	10.1016/j.palaeo.2023.111963
	Modern pollen-vegetation coverage relationships and its application for Holocene vegetation reconstructions in the central Tianshan Mountains
	Li, Xueyin; Sun, Aizhi; Yang, Yunpeng; Zhang, Dongliang; Wu, Shuangshuang
通讯作者	Sun, AZ
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2024
卷号	635
英文摘要	The Tianshan Mountains are the largest mountain system in Central Asia and comprise islands of humidity within a widespread arid zone. In this study, we improve knowledge of the quantitative relationship between pollen and vegetation coverage in the region, to quantitatively reconstruct Holocene vegetation coverage. Specifically, we statistically analyzed 1058 modern pollen samples from the central Tianshan Mountains and neighbouring regions, utilizing redundancy analysis (RDA), and boosted regression trees (BRT), stepwise regression (Stepwise), the modern analogy technique (MAT), weighted average partial least squares (WA-PLS) and local weighted average (LWWA) methods, to construct a series of modern calibration sets between pollen and fractional vegetation cover (FVC). The results show that (1) FVC and modern pollen assemblages display a strong correlation (correlation coefficient of 0.66) and (2) BRT outperforms Stepwise, MAT, WA-PLS and LWWA under leave-one-out cross-validation, bootstrap, and spatial autocorrelation tests, making the BRT model the best choice. Applied to Holocene datasets, we infer that from 11.4 to 4.6 cal kyr BP, FVC changes were mainly influenced by natural climate changes. However, after 4.6 cal kyr BP, FVC changes were influenced by a combination of natural climate changes (with humidity playing a dominant role) and the intensity of human activities.
英文关键词	Central Tianshan Mountains Pollen FVC Quantitative reconstruction model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001138641400001
WOS关键词	ARID CENTRAL-ASIA ; EASTERN CONTINENTAL ASIA ; CLIMATE CHANGES ; SURFACE POLLEN ; HUMAN IMPACT ; QUANTITATIVE RECONSTRUCTIONS ; ENVIRONMENTAL EVOLUTION ; ALASHAN PLATEAU ; NORTHERN SLOPE ; XINJIANG
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405025
推荐引用方式 GB/T 7714	Li, Xueyin,Sun, Aizhi,Yang, Yunpeng,et al. Modern pollen-vegetation coverage relationships and its application for Holocene vegetation reconstructions in the central Tianshan Mountains[J],2024,635.
APA	Li, Xueyin,Sun, Aizhi,Yang, Yunpeng,Zhang, Dongliang,&Wu, Shuangshuang.(2024).Modern pollen-vegetation coverage relationships and its application for Holocene vegetation reconstructions in the central Tianshan Mountains.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,635.
MLA	Li, Xueyin,et al."Modern pollen-vegetation coverage relationships and its application for Holocene vegetation reconstructions in the central Tianshan Mountains".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 635(2024).