气候变化领域集成服务门户(CCPortal): No evidence of human disturbance to vegetation in the Zoige Region (north-eastern Tibetan Plateau) in the last millennium until recent decades

CCPortal

DOI	10.1016/j.palaeo.2022.110843
	No evidence of human disturbance to vegetation in the Zoige Region (north-eastern Tibetan Plateau) in the last millennium until recent decades
	Zhang, Yanrong; Li, Yunqing; Liu, Lina; Wang, Nannan; Cao, Xianyong
通讯作者	Cao, XY (通讯作者)
发表日期	2022
ISSN	0031-0182
EISSN	1872-616X
卷号	589
英文摘要	A high-resolution record (-5-20 years per sample) of pollen, charcoal, total organic carbon (TOC), and total nitrogen (TN) was analysed from a core obtained from a small lake (Xing Co) on the northeastern Tibetan Plateau. Findings shed light on vegetation change and its driving forces over the last-1440 years and the impact of recent human activities. Between ca. 580 and 1300 CE, vegetation was alpine meadow, dominated by Cyperaceae with low percentages of Poaceae and Artemisia. Pollen spectra indicate that vegetation shifted to dry alpine steppe dominated by Poaceae and Artemisia between 1300 and 1470 CE, possibly as a response to reduced precipitation and cooler temperatures linked to the transition from the Medieval Warm Period (MWP) to the Little Ice Age (LIA). A further significant increase of Poaceae from 1770 to 1910 CE indicates consolidation of the alpine steppe. However, after 1910 CE, pollen spectra are characterized by decreasing Poaceae abundance and increasing abundances of Artemisia, Cyperaceae, Ranunculaceae, Thalictrum, and Polygonaceae, with high pollen richness and evenness. These recent vegetation changes are probably caused, at least in part, by enhanced human impacts. Furthermore, our analysis also shows an significant increase in percentages of Pediastrum and Potamogeton together with a sharp increase in TN after ca. 1990 CE, suggesting eutrophication of the lake water. Therefore, our record suggests that human activities did not have any significant impact on the composition of the vegetation until recent decades at Xing Co.
关键词	CLIMATE-CHANGE HOLOCENE VEGETATION QAIDAM BASIN LAKE-SEDIMENTS POLLEN RECORD MONSOON PRECIPITATION DEGRADATION DYNAMICS CARBON
英文关键词	Vegetation composition; Anthropogenic eutrophication; PCA; Human disturbance; Xing Co
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:000789221000003
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/260618
推荐引用方式 GB/T 7714	Zhang, Yanrong,Li, Yunqing,Liu, Lina,et al. No evidence of human disturbance to vegetation in the Zoige Region (north-eastern Tibetan Plateau) in the last millennium until recent decades[J]. 中国科学院青藏高原研究所,2022,589.
APA	Zhang, Yanrong,Li, Yunqing,Liu, Lina,Wang, Nannan,&Cao, Xianyong.(2022).No evidence of human disturbance to vegetation in the Zoige Region (north-eastern Tibetan Plateau) in the last millennium until recent decades.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,589.
MLA	Zhang, Yanrong,et al."No evidence of human disturbance to vegetation in the Zoige Region (north-eastern Tibetan Plateau) in the last millennium until recent decades".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 589(2022).