干旱区生态环境知识资源中心(Arid): Impact of Snowpack on the Land Surface Phenology in the Tianshan Mountains, Central Asia

Arid

DOI	10.3390/rs14143462
	Impact of Snowpack on the Land Surface Phenology in the Tianshan Mountains, Central Asia
	Yang, Tao; Li, Qian; Zou, Qiang; Hamdi, Rafiq; Cui, Fengqi; Li, Lanhai
通讯作者	Li, LH
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2022
卷号	14 期号:14
英文摘要	The accumulation and ablation processes of seasonal snow significantly affect the land surface phenology in a mountainous ecosystem. However, the ability of snow to regulate the alpine land surface phenology in the arid regions is not well described in the context of climate change. The impact of snowpack changes on land surface phenology and its driving factors were investigated in the Tianshan Mountains using the land surface phenology metrics derived from satellited products and a snow dataset from downscaled regional climate model simulations covering the period from 1983 to 2015. The results demonstrated that the annual mean start of growing season (SOS) and length of growing season (LOS) experienced a significant (p < 0.05) decrease and increase with a rate of -2.45 days/decade and 2.98 days/decade, respectively. The significantly advanced SOS and increased LOS were mainly seen in the Western Tianshan Mountains and Ili Valley regions with elevations from 2500 to 3500 m a.s.l and below 3000 m a.s.l, respectively. During the early spring, the significant decline in snow cover fraction (SCF) could advance the SOS. In contrast, snowmelt amount and annual maximum snow water equivalent (SWE) have an almost equally substantial positive correlation with annual maximum vegetation greenness. In particular, the SOS of grassland was the most sensitive to variations of snow cover fraction during early spring than that of other vegetation types, and their strong relationship was mainly located at elevations from 1500 to 2500 m a.s.l. Its greenness was significantly controlled by the annual maximum snow water equivalent in all elevation bands. Both decreased SCF and increased temperature in the early spring caused a significant advance of the SOS, consequently prolonging the LOS. Meanwhile, more SWE and snowmelt amount could significantly promote vegetation greenness by regulating the soil moisture. The results can improve the understanding of the snow ecosystem services in the alpine regions under climate change.
英文关键词	snow mass snow cover fraction land surface phenology Tianshan Mountains
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000833259900001
WOS关键词	CLIMATE-CHANGE ; VEGETATION PHENOLOGY ; TIBETAN PLATEAU ; TIEN-SHAN ; POTENTIAL IMPACTS ; SPRING PHENOLOGY ; COVER ; PATTERNS ; TIME ; PRECIPITATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394173
推荐引用方式 GB/T 7714	Yang, Tao,Li, Qian,Zou, Qiang,et al. Impact of Snowpack on the Land Surface Phenology in the Tianshan Mountains, Central Asia[J],2022,14(14).
APA	Yang, Tao,Li, Qian,Zou, Qiang,Hamdi, Rafiq,Cui, Fengqi,&Li, Lanhai.(2022).Impact of Snowpack on the Land Surface Phenology in the Tianshan Mountains, Central Asia.REMOTE SENSING,14(14).
MLA	Yang, Tao,et al."Impact of Snowpack on the Land Surface Phenology in the Tianshan Mountains, Central Asia".REMOTE SENSING 14.14(2022).