干旱区生态环境知识资源中心(Arid): Vegetation and climate history of Anggertu Lake in the Tengger Desert over the last millennium

Arid

	Vegetation and climate history of Anggertu Lake in the Tengger Desert over the last millennium
	Duan Futao; An Chengbang; Zhao Yongtao; Wang Wei; Cao Zhihong; Zhou Aifeng
来源期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
出版年	2018
卷号	36 期号:6 页码:2166-2180
英文摘要	Reconstructing climate change of the last millennium is important to understand the current relationship between human-social activities and natural environmental changes. Pollen assemblages, losson- ignition (LOI org at 550°C), and grain size data collected from sediment core AGE15A from the center of Anggertu lake (eastern Tengger Desert, Inner Mongolia) were used to reconstruct the regional vegetation and climate history of the last millennium. Desert or steppe desert, dominated by Artemisia and Amaranthaceae, expanded around this region during the period of 988-1437 AD indicating a generally dry climate condition with two short humid periods (1003-1082 AD and 1388-1437 AD). These two wet periods were characterized by relatively high vegetation cover and bioproductivity, as reflected by high pollen concentrations and LOI org values. Increases in steppe and meadow vegetation communities (Poaceae, Cyperaceae) and vegetation cover during 1437-2015 AD suggest a wetting trend, which was also deduced from a gradual trend towards fine grains and higher lake biological productivity as reflected by LOI org values. An unstable lacustrine environment was identified via frequent fluctuations in pollen concentration and grain size after 1842 AD. This study also recorded a relatively dry Medieval Warm Period (MWP, 1082-1388 AD) and a wet Little Ice Age (LIA, 1437-1842 AD). Increased Amaranthaceae and high abundance of Poaceae may be related to overgrazing and agricultural activities that took place during those time periods. The evolution of vegetation in the lake region was influenced by climate change and human activities. These results could provide more fundamental support for studies of the environmental evolution of the Tengger Desert.
英文关键词	Anggertu Lake Tengger Desert lacustrine record vegetation climate changes the last millennium
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6397635
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336050
作者单位	Duan Futao, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.; An Chengbang, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.; Zhao Yongtao, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.; Wang Wei, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.; Cao Zhihong, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.; Zhou Aifeng, College of Earth Environmental Sciences, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Duan Futao,An Chengbang,Zhao Yongtao,et al. Vegetation and climate history of Anggertu Lake in the Tengger Desert over the last millennium[J],2018,36(6):2166-2180.
APA	Duan Futao,An Chengbang,Zhao Yongtao,Wang Wei,Cao Zhihong,&Zhou Aifeng.(2018).Vegetation and climate history of Anggertu Lake in the Tengger Desert over the last millennium.Journal of Oceanology and Limnology,36(6),2166-2180.
MLA	Duan Futao,et al."Vegetation and climate history of Anggertu Lake in the Tengger Desert over the last millennium".Journal of Oceanology and Limnology 36.6(2018):2166-2180.