干旱区生态环境知识资源中心(Arid): Snow-Cover Area and Runoff Variation under Climate Change in the West Kunlun Mountains

Arid

DOI	10.3390/w11112246
	Snow-Cover Area and Runoff Variation under Climate Change in the West Kunlun Mountains
	Ma, Xiaofei 1,2; Yan, Wei 3; Zhao, Chengyi4 ; Kundzewicz, Zbigniew W.5
通讯作者	Yan, Wei ; Zhao, Chengyi
来源期刊	WATER
EISSN	2073-4441
出版年	2019
卷号	11 期号:11
英文摘要	In recent years, the climate in the arid region of Northwest China has become warmer and wetter; however, glaciers in the north slope of the West Kunlun Mountains (NSWKM) show no obvious recession, and river flow is decreasing or stable. This contrasts with the prevalent response of glaciers to climate change, which is recession and initial increase in glacier discharge followed by decline as retreat continues. We comparatively analyzed multi-timescale variation in temperature-precipitation-snow cover-runoff in the Yarkant River Basin (YRK), Karakax River Basin (KRK), Yurungkax River Basin (YUK), and Keriya River Basin (KRY) in the NSWKM. The Mann-Kendall trend and the mutation-detection method were applied to data obtained from an observation station over the last 60 years (1957-2017) and MODIS snow data (2001-2016). NSWKM temperature and precipitation have continued to increase for nearly 60 years at a mean rate of 0.26 degrees C/decade and 5.50 mm/decade, respectively, with the most obvious trend (R-2 > 0.82) attributed to the KRK and YUK. Regarding changes in the average snow-cover fraction (SCF): YUK (SCF = 44.14%) > YRK (SCF = 38.73%) > KRY (SCF = 33.42%) > KRK (SCF = 33.40%). Between them, the YRK and YUK had decreasing SCA values (slope < -15.39), while the KRK and KRY had increasing SCA values (slope > 1.87). In seasonal variation, the SCF of the three of the basins reaches the maximum value in spring, with the most significant performance in YUK (SCF = 26.4%), except for YRK where SCF in spring was lower than that in winter (-2.6%). The runoff depth of all river basins presented an increasing trend, with the greatest value appearing in the YRK (5.78 mm/decade), and the least value in the YUK (1.58 mm/decade). With the runoff response to climate change, temperature was the main influencing factor of annual and monthly (summer) runoff variations in the YRK, which is consistent with the runoff-generation rule of rivers in arid areas, which mainly rely on ice and snow melt for water supply. However, this rule was not consistent for the YUK and KRK, as it was disturbed by other factors (e.g., slope and slope direction) during runoff generation, resulting in disruptions of their relationship with runoff. This research promotes the study of the response of cold and arid alpine regions to global change and thus better serve regional water resources management.
英文关键词	climate change snow cover runoff Mann-Kendall test hydrologic analogy Kunlun Mountains
类型	Article
语种	英语
国家	Peoples R China ; Poland
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000502264500048
WOS关键词	WATER-RESOURCES ; TARIM RIVER ; MASS-BALANCE ; ARID REGION ; DEPTH DATA ; BASIN ; GLACIER ; HIMALAYAN ; IMPACT ; DERIVATION
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
EI主题词	2019-11-01
来源机构	中国科学院新疆生态与地理研究所 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310548
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Xinyang Normal Univ, Sch Geog Sci, Xinyang 464000, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Jiangsu, Peoples R China; 5.Polish Acad Sci, Inst Agr & Forest Environm, PL-61819 Poznan, Poland
推荐引用方式 GB/T 7714	Ma, Xiaofei,Yan, Wei,Zhao, Chengyi,et al. Snow-Cover Area and Runoff Variation under Climate Change in the West Kunlun Mountains[J]. 中国科学院新疆生态与地理研究所, 南京信息工程大学,2019,11(11).
APA	Ma, Xiaofei,Yan, Wei,Zhao, Chengyi,&Kundzewicz, Zbigniew W..(2019).Snow-Cover Area and Runoff Variation under Climate Change in the West Kunlun Mountains.WATER,11(11).
MLA	Ma, Xiaofei,et al."Snow-Cover Area and Runoff Variation under Climate Change in the West Kunlun Mountains".WATER 11.11(2019).