气候变化领域集成服务门户(CCPortal): Spatiotemporal Variations in Snow Cover and Hydrological Effects in the Upstream Region of the Shule River Catchment, Northwestern China

CCPortal

DOI	10.3390/rs13163212
	Spatiotemporal Variations in Snow Cover and Hydrological Effects in the Upstream Region of the Shule River Catchment, Northwestern China
	Jiang, Youyan; Du, Wentao; Chen, Jizu; Sun, Wenxuan
通讯作者	Du, WT (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Qilian Shan Stn Glaciol & Ecoenvironm, Lanzhou 730000, Peoples R China.
发表日期	2021
EISSN	2072-4292
卷号	13 期号:16
英文摘要	Precipitation and snow/ice melt water are the primary water sources in inland river basins in arid areas, and these are sensitive to global climate change. A dataset of snow cover in the upstream region of the Shule River catchment was established using MOD10A2 data from 2000 to 2019, and the spatiotemporal variations in the snow cover and its meteorological, runoff, and topographic impacts were analyzed. The results show that the spatial distribution of the snow cover is highly uneven owing to altitude differences. The snow cover in spring and autumn is mainly concentrated along the edges of the region, whereas that in winter and summer is mainly distributed in the south. Notable differences in snow accumulation and melting are observed at different altitudes, and the annual variation in the snow cover extent shows bimodal characteristics. The correlation between the snow cover extent and runoff is most significant in April. The snow cover effectively replenishes the runoff at higher altitudes (3300-4900 m), but this contribution weakens with increasing altitude (>4900 m). The regions with a high snow cover frequency are mostly concentrated at high altitudes. Regions with slopes of <30 degrees show a strong correlation with the snow cover frequency, which decreases for slopes of >45 degrees. The snow cover frequency and slope aspect show symmetrical changes.
关键词	BASIN
英文关键词	snow cover; spatiotemporal variations; climate and topographic causes; hydrological effect
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000690036900001
来源期刊	REMOTE SENSING
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/254036
作者单位	[Jiang, Youyan; Du, Wentao; Chen, Jizu; Sun, Wenxuan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Qilian Shan Stn Glaciol & Ecoenvironm, Lanzhou 730000, Peoples R China; [Jiang, Youyan] Lanzhou Reg Climate Ctr, Lanzhou 730020, Peoples R China; [Sun, Wenxuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Youyan,Du, Wentao,Chen, Jizu,et al. Spatiotemporal Variations in Snow Cover and Hydrological Effects in the Upstream Region of the Shule River Catchment, Northwestern China[J]. 中国科学院西北生态环境资源研究院,2021,13(16).
APA	Jiang, Youyan,Du, Wentao,Chen, Jizu,&Sun, Wenxuan.(2021).Spatiotemporal Variations in Snow Cover and Hydrological Effects in the Upstream Region of the Shule River Catchment, Northwestern China.REMOTE SENSING,13(16).
MLA	Jiang, Youyan,et al."Spatiotemporal Variations in Snow Cover and Hydrological Effects in the Upstream Region of the Shule River Catchment, Northwestern China".REMOTE SENSING 13.16(2021).