Natural and anthropogenic influences on the spatiotemporal change of degraded meadows in southern Qinghai Province, West China: 1976-2015

doi:10.1016/j.apgeog.2018.06.011

NWIPB OpenIR

	Natural and anthropogenic influences on the spatiotemporal change of degraded meadows in southern Qinghai Province, West China: 1976-2015
	Li, Xilai 1,3,4; Gao, Jay 2; Zhang, Jing 3; Sun, Haiqun 3
	2018-08-01
发表期刊	APPLIED GEOGRAPHY
ISSN	0143-6228
卷号	97 页码:176-183
文章类型	Article
摘要	It is important to study the spatial variation of degraded meadows as it can shed light on the influence of natural settings on grassland degradation. Although attention has been paid to the spatiality of grassland degradation in the literature, nobody has assessed the impact of natural environment on meadow degradation quantitatively in relation to human impact. This study aims to overcome this deficiency by assessing the spatial variation of natural and anthropogenic variables influencing degradation of meadows in southern Qinghai Province of West China. After degraded meadows at six sites were mapped from satellite images, their changes over 1976-2015 were detected in ArcGIS. The obtained results indicate degraded meadows increased from 747.73 km(2) in 1976 to 900.01 km(2) (20.36%) by 2015. Spatially, there is a high variability among the six sites, with one site (Dari) contributing more than half of the total change alone. Annual temperature averaged over the preceding three years is the most crucial to change in degraded meadows (R-2 > 70%). However, the exact proportion of explanation varies widely from zero to 92% across the six sites, with most R-2 values falling between 33 and 51%. Such a large variability stems from the differential climate settings. Overall, climate influences on meadow degradation are much stronger than those of anthropogenic activity, namely, overgrazing defined as the discrepancy between the stocking rate and the meadows' theoretical carrying capacity. The latter played a noticeable role in meadow degradation only during certain temporal periods.
关键词	Degraded Meadows Natural And Anthropogenic Influences Change Detection Spatiotemporal Analysis Remote Sensing Qinghai Province
WOS标题词	Social Sciences
DOI	10.1016/j.apgeog.2018.06.011
关键词[WOS]	TIBETAN PLATEAU ; CLIMATE-CHANGE ; GRASSLAND ; DEGRADATION ; ECOSYSTEM ; IMPACT
收录类别	SSCI
语种	英语
项目资助者	National Key R & D Program of China(2017YFC0504803 ; Qinghai Science and Technology Department(2015-SF-117 ; Qinghai innovation platform construction project(2017-ZJ-Y20) ; National Natural Science Foundation of China(31560668) ; International Science & Technology Cooperation Program of China(2015DFG31870) ; 2016YFC0501903) ; 2017-HZ-802)
WOS研究方向	Geography
WOS类目	Geography
WOS记录号	WOS:000440770900016
出版者	ELSEVIER SCI LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/13765
专题	中国科学院西北高原生物研究所
通讯作者	Gao, Jay
作者单位	1.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China 2.Univ Auckland, Sch Environm, New Zealand Private Bag 92019, Auckland, New Zealand 3.Qinghai Univ, Coll Agr & Anim Husb, Xining 810016, Qinghai, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Area Qinghai Prov, Xining 81008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Li, Xilai,Gao, Jay,Zhang, Jing,et al. Natural and anthropogenic influences on the spatiotemporal change of degraded meadows in southern Qinghai Province, West China: 1976-2015[J]. APPLIED GEOGRAPHY,2018,97:176-183.
APA	Li, Xilai,Gao, Jay,Zhang, Jing,&Sun, Haiqun.(2018).Natural and anthropogenic influences on the spatiotemporal change of degraded meadows in southern Qinghai Province, West China: 1976-2015.APPLIED GEOGRAPHY,97,176-183.
MLA	Li, Xilai,et al."Natural and anthropogenic influences on the spatiotemporal change of degraded meadows in southern Qinghai Province, West China: 1976-2015".APPLIED GEOGRAPHY 97(2018):176-183.