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DOI	10.1016/j.scitotenv.2021.150100
	Spatiotemporal variations of land surface albedo and associated influencing factors on the Tibetan Plateau
	Pang, Guojin; Chen, Deliang; Wang, Xuejia; Lai, Hui-Wen
通讯作者	Chen, DL (通讯作者)，Univ Gothenburg, Dept Earth Sci, Box 460, S-40530 Gothenburg, Sweden. ; Wang, XJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, DonggangWest Rd 320, Lanzhou, Peoples R China.
发表日期	2022
ISSN	0048-9697
EISSN	1879-1026
卷号	804
英文摘要	Land surface albedo plays a crucial role in the land surface energy budget and climate. This paper identified the spatiotemporal variations of surface albedo on the Tibetan Plateau (TP) from 1982 to 2015, and quantified the relationships between the spatial and temporal patterns of the albedo and associated influencing factors (snow cover, vegetation, and soil moisture) on the seasonal and interannual basis using satellite products and reanalysis data. It was determined that the albedo presented a distinct spatial variability, with high values in mountainous areas and low values on the southeastern TP. Spatially, average albedo exhibited a positive correlation with snow cover and negative correlations with vegetation and soil moisture. Average albedo over the whole TP had a clear seasonal cycle with a peak in winter and a minimum value in summer, which is dictated by seasonal changes in snow and vegetation covers. Annual average albedo exhibited a weakly downward trend, which was mainly contributed by a significant decrease in summer, pointing to the important role in vegetation dynamics for temporal change of the albedo. On the regional basis, interannual variation of albedo was more responsive to snow cover over the snow-and vegetation-coexisting area than the snow-covered area, and to changes in Normalized Difference Vegetation Index (NDVI) over the vegetation-covered area than the snow-and vegetation-coexisting area; albedo had a weakly negative correlation with soil moisture over bare soil. Furthermore, our results indicated that snow cover was the dominant factor for albedo change on mountainous areas, and vegetation change predominated the variation of albedo on the eastern, southern, and northwestern TP. Specifically, variations in snow cover contributed more than those of vegetation to the interannual albedo variation over the Three Rivers Headwater Region. These results would be beneficial for better understanding the climate and eco-environment changes over the TP. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
关键词	SNOW-COVER CLIMATE-CHANGE SOIL-MOISTURE MODEL VARIABILITY DEPTH MODIS SIMULATIONS CRYOSPHERE GREENNESS
英文关键词	Surface albedo; Tibetan Plateau; Spatiotemporal variation; Snow cover; NDVI; Soil moisture
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000704409200001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254181
作者单位	[Pang, Guojin] Lanzhou Jiaotong Univ, Fac Geomat, Lanzhou 730070, Peoples R China; [Pang, Guojin; Chen, Deliang; Lai, Hui-Wen] Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, S-40530 Gothenburg, Sweden; [Pang, Guojin] Natl Local Joint Engn Res Ctr Technol & Applicat, Lanzhou 730070, Peoples R China; [Pang, Guojin] Gansu Prov Engn Lab Natl Geog State Monitoring, Lanzhou 730070, Peoples R China; [Wang, Xuejia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Yulong Snow Mt Cryosphere & Sustainable Dev Field, Lanzhou 730000, Peoples R China; [Wang, Xuejia] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730030, Peoples R China
推荐引用方式 GB/T 7714	Pang, Guojin,Chen, Deliang,Wang, Xuejia,et al. Spatiotemporal variations of land surface albedo and associated influencing factors on the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2022,804.
APA	Pang, Guojin,Chen, Deliang,Wang, Xuejia,&Lai, Hui-Wen.(2022).Spatiotemporal variations of land surface albedo and associated influencing factors on the Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,804.
MLA	Pang, Guojin,et al."Spatiotemporal variations of land surface albedo and associated influencing factors on the Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 804(2022).