干旱区生态环境知识资源中心(Arid): Temporal and spatial variability in snow cover over the Xinjiang Uygur Autonomous Region, China, from 2001 to 2015

Arid

DOI	10.7717/peerj.8861
	Temporal and spatial variability in snow cover over the Xinjiang Uygur Autonomous Region, China, from 2001 to 2015
	Chen, Wenqian 1,2,3; Ding, Jianli1,2 ; Wang, Jingzhe 1,2,4,5,6; Zhang, Junyong 1,2; Zhang, Zhe 1,2
通讯作者	Ding, Jianli
来源期刊	PEERJ
ISSN	2167-8359
出版年	2020
卷号	8
英文摘要	Xinjiang, China, is a typical arid and semi-arid region of Central Asia that significantly lacks freshwater resources, and the surface runoff in this region is mainly supplied by mountain glacier and snow cover meltwater. Based on the above background and issues of transnational water resources between Xinjiang and Central Asia along the Silk Road Economic Belt, which were highlighted in the major strategy of The Belt and Road'', this study analysed the spatial and temporal variations in snow cover and snow cover days in the Xinjiang region from 2001 to 2015. The study area includes four subregions: Northern Xinjiang, Southern Xinjiang, Eastern Xinjiang and the Ili River Valley. Moderate-resolution Imaging Spectroradiometer (MODIS) 8-day snow cover data were used after removing clouds by combining MOD10A2 and MYD10A2. The results showed that seasonal snow cover occurred from October to April in most regions of Xinjiang and that this snow cover consisted of two processes: snow accumulation and snow ablation. The maximum snow cover occurred in January, whereas the minimum snow cover occurred from July to August. During the seasonal snow cover period, the snowfall rates in Northern Xinjiang and the Ili River Valley were higher, while the other regions had a low snowfall probability. To study the relationship between altitude and snow cover, the normalized snow elevation correlation index (NSACI) was calculated. The NSACI showed a significant correlation between snow cover and elevation in most regions of Xinjiang and was classified into five grades. Snow cover days did not fluctuate obviously from 2001 to 2015, and a decreasing trend was observed in the four subregions except for the Ili River Valley (nonsignificant decreasing trend). We also observed a correlation between snow cover and temperature and found that the correlations between monthly snow cover and monthly temperature in the four subregions were strongly related to the underlying land type and global warming background, which also suggests that the special topography of Xinjiang greatly influences both snow cover and climate change.
英文关键词	Arid regions of Central Asia Xinjiang MOD10A2 Seasonal snow cover NSACI index Temporal and spatial variation
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000524530100005
WOS关键词	MODIS ; PRODUCTS ; MOUNTAINS ; GLACIER ; ALBEDO
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315297
作者单位	1.Xinjiang Univ, Coll Resources & Environm Sci, Higher Educ Inst, Key Lab Smart City & Environm Modelling, Urumqi, Xinjiang, Peoples R China; 2.Xinjiang Univ, Key Lab Oasis Ecol, Urumqi, Xinjiang, Peoples R China; 3.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen, Guangdong, Peoples R China; 4.Shenzhen Univ, Minist Nat Resources, Key Lab Geoenvironm Monitoring Coastal Zone, Shenzhen, Guangdong, Peoples R China; 5.Shenzhen Univ, Guangdong Key Lab Urban Informat, Shenzhen, Guangdong, Peoples R China; 6.Shenzhen Univ, Shenzhen Key Lab Spatial Smart Sensing & Serv, Shenzhen, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Chen, Wenqian,Ding, Jianli,Wang, Jingzhe,et al. Temporal and spatial variability in snow cover over the Xinjiang Uygur Autonomous Region, China, from 2001 to 2015[J]. 新疆大学,2020,8.
APA	Chen, Wenqian,Ding, Jianli,Wang, Jingzhe,Zhang, Junyong,&Zhang, Zhe.(2020).Temporal and spatial variability in snow cover over the Xinjiang Uygur Autonomous Region, China, from 2001 to 2015.PEERJ,8.
MLA	Chen, Wenqian,et al."Temporal and spatial variability in snow cover over the Xinjiang Uygur Autonomous Region, China, from 2001 to 2015".PEERJ 8(2020).