Tree-ring evidence of the impacts of climate change and agricultural cultivation on vegetation coverage in the upper reaches of the Weihe River, northwest China

doi:10.1016/j.scitotenv.2019.136160

	Tree-ring evidence of the impacts of climate change and agricultural cultivation on vegetation coverage in the upper reaches of the Weihe River, northwest China
	Sun, Changfeng 1; Liu, Yu 1,3,4,5; Song, Huiming 1,3; Li, Qiang 1,3; Cai, Qiufang 1,3; Wang, Lu 1; Fang, Congxi 1; Liu, Ruoshi 2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-03-10
卷号	707 页码:8
关键词	Tree ring Vegetation coverage Climate change Agricultural cultivation Northwest China
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.136160
通讯作者	Sun, Changfeng(suncf@ieecas.cn) ; Liu, Yu(liuyu@loess.llqg.ac.cn)
英文摘要	Comprehending the characteristics and causes of vegetation coverage in history is of practical significance for studying ecological and environmental changes. As a typical region of the semi-arid and semi-humid climatic zone in northwest China, the upper reaches of the Weihe River have relatively fragile ecological environment. Based on tree-ring width chronologies, the vegetation coverage represented by the normalized difference vegetation index was reconstructed from 1630 to 2006 using a regression model. There were 64 years with high vegetation coverage and 56 years with low vegetation coverage over the past 377 years. At low frequencies, the coverage was relatively higher in the 1650s and from the 1880s to 1890s, while the coverage was lower in the 1720s and from the 1760s to 1770s. While precipitation and temperature had positive and negative influences on the changes of vegetation coverage, respectively, during the past several centuries, the agricultural cultivation played an important role on coverage changes. Along with the land reclamation expansion in history, the forest cover gradually declined, and vegetation coverage decreased. The vegetation coverage was lower when there were more arable lands reclaimed from woodlands. Regardless of the land reclamation policy during the historical period or the current conversion project of cropland to forest, they affected the vegetation coverage by influencing cover ranges of woodland and farmland. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	CAS Light of West China Program ; National Natural Science Foundation of China[41902189] ; National Natural Science Foundation of China[41630531] ; CAS Research Program[QYZDJ-SSW-DQC021] ; Natural Science Basic Research Plan in Shaanxi Province of China[2019JQ-932] ; State Key Laboratory of Loess and Quaternary Geology (SKLLQG)
WOS关键词	LOESS PLATEAU ; SEASONAL DYNAMICS ; NDVI ; RECONSTRUCTION ; PRODUCTIVITY ; GRASSLAND ; MOUNTAIN ; GROWTH ; INDEX ; CHRONOLOGIES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000507925700144
资助机构	CAS Light of West China Program ; National Natural Science Foundation of China ; CAS Research Program ; Natural Science Basic Research Plan in Shaanxi Province of China ; State Key Laboratory of Loess and Quaternary Geology (SKLLQG)
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12815]
专题	地球环境研究所_现代环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Sun, Changfeng; Liu, Yu
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Beijing Normal Univ, JCGCS, Beijing 100875, Peoples R China 5.Beijing Normal Univ, IRCESF, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Sun, Changfeng,Liu, Yu,Song, Huiming,et al. Tree-ring evidence of the impacts of climate change and agricultural cultivation on vegetation coverage in the upper reaches of the Weihe River, northwest China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,707:8.
APA	Sun, Changfeng.,Liu, Yu.,Song, Huiming.,Li, Qiang.,Cai, Qiufang.,...&Liu, Ruoshi.(2020).Tree-ring evidence of the impacts of climate change and agricultural cultivation on vegetation coverage in the upper reaches of the Weihe River, northwest China.SCIENCE OF THE TOTAL ENVIRONMENT,707,8.
MLA	Sun, Changfeng,et al."Tree-ring evidence of the impacts of climate change and agricultural cultivation on vegetation coverage in the upper reaches of the Weihe River, northwest China".SCIENCE OF THE TOTAL ENVIRONMENT 707(2020):8.