干旱区生态环境知识资源中心(Arid): Surface soil phytolith assemblages across an altitudinal transect in the Qilian Mountains of Northwestern China, and their implications for palaeoecologic analysis in arid alpine regions

Arid

DOI	10.1016/j.palaeo.2024.112374
	Surface soil phytolith assemblages across an altitudinal transect in the Qilian Mountains of Northwestern China, and their implications for palaeoecologic analysis in arid alpine regions
	Li, Xiang; Dong, Shipei; Li, Zhuolun; Peng, Xue; Shen, Yingyibing; Jin, Qihang; Yu, Xinhui; Zhang, Dezhong
通讯作者	Dong, SP ; Li, ZL
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2024
卷号	650
英文摘要	Reconstructing changes in altitudinal vegetation belts is crucial for comprehending vegetation response to past environmental changes in arid alpine regions, however, proxy data are limited. In this study, we report 51 surface soil phytolith samples from various vegetation types across an altitudinal transect in the arid alpine region of the Qilian Mountains, to elucidate the relationships between vegetation types and phytolith assemblages. Our results show that phytolith morphotypes in surface soil samples could be categorized into 16 classes, with Gobbet, CRENATE, RONDEL, ELONGATE entire, and ACUTE BULBOSUS being the predominant classes. The characteristics of surface soil phytolith assemblages vary across an altitudinal transect, reflecting differences in local vegetation. Discriminant analysis identifies Cubic, ELONGATE ENTIRE, CRENATE, Gobbet, and RONDEL as discriminant variables that correlated with five vegetation types (desert vegetation, mountain steppe vegetation, mountain coniferous forest vegetation, subalpine shrub meadow vegetation, and alpine meadow vegetation). We establish five discriminant functions based on the relationships between vegetation types and phytolith assemblages, demonstrating a high accuracy of our method for distinguishing between different vegetation types. These discriminant functions are applicable for distinguishing between diverse vegetation types in the mountains of arid inland regions of Asia. They are also effective in identifying coniferous forest vegetation in mid-latitude mountains. Therefore, these discriminant functions hold significant potential for reconstructing changes in altitudinal vegetation belts in mountainous regions and determining the vegetative types recorded by terminal lakes in arid regions. Our study introduces a new perspective on palaeoecologic analysis in arid alpine regions, advancing our understanding of ecosystem dynamics in response to environmental fluctuations.
英文关键词	Phytolith Altitudinal vegetation belts Vegetation types Proxy Arid alpine region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001271478100001
WOS关键词	PAST ENVIRONMENTAL-CONDITIONS ; ASIAN MONSOON MARGIN ; MORPHOLOGICAL-CHARACTERISTICS ; QUANTITATIVE INDICATORS ; CLIMATIC CHANGES ; TIBETAN PLATEAU ; NORTHERN SLOPE ; LAKE EVOLUTION ; RIVER-BASIN ; VEGETATION
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/2XILL650/405031
推荐引用方式 GB/T 7714	Li, Xiang,Dong, Shipei,Li, Zhuolun,et al. Surface soil phytolith assemblages across an altitudinal transect in the Qilian Mountains of Northwestern China, and their implications for palaeoecologic analysis in arid alpine regions[J],2024,650.
APA	Li, Xiang.,Dong, Shipei.,Li, Zhuolun.,Peng, Xue.,Shen, Yingyibing.,...&Zhang, Dezhong.(2024).Surface soil phytolith assemblages across an altitudinal transect in the Qilian Mountains of Northwestern China, and their implications for palaeoecologic analysis in arid alpine regions.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,650.
MLA	Li, Xiang,et al."Surface soil phytolith assemblages across an altitudinal transect in the Qilian Mountains of Northwestern China, and their implications for palaeoecologic analysis in arid alpine regions".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 650(2024).