干旱区生态环境知识资源中心(Arid): 干旱、半干旱地区积雪变化及其与气候变化的关系以新疆维吾尔自治区为例

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	干旱、半干旱地区积雪变化及其与气候变化的关系以新疆维吾尔自治区为例
其他题名	Variability of snow cover and the relationship with climate change in arid and semi-arid areas: a case study of the Xinjiang Uygur Autonomous Region
	户元涛; 张廷军
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2018
卷号	54 期号:5 页码:577-585
中文摘要	基于新疆维吾尔自治区喀什站和乌鲁木齐站1993-2012年积雪、辐射、气温和降水量数据,分析了干旱、半干旱地区不同时间尺度下积雪与地表反照率、地表净辐射、气温和降水量变化以及它们之间的关系.结果表明:年际变化中,干旱地区积雪首日提前,积雪终日延后,积雪天数、积雪深度和积雪指数增加,促进了地表反照率和降水量的显著增大,使地表净辐射和气温降低;半干旱地区积雪首日延后,积雪终日提前,积雪天数减少,积雪深度和积雪指数的增加使地表反照率显著增大,其中积雪天数的变化明显抑制了气温升高,相关系数为-0.49.季节变化中,干旱地区冬季积雪增加,尤其是积雪深度的增加引起了降水量、地表反照率的增大与地表净辐射、温度的降低;半干旱地区春季积雪增多,地表反照率增大,降水量减少,由于积雪的提前消融,导致地表净辐射增大,使得春季增温最快,而秋季积雪减少,其他气候因子呈增加趋势,冬季积雪增加引起了降水量和地表反照率的增大与地表净辐射的减少,导致温度降低,其中积雪深度的变化与地表反照率、地表净辐射和降水量显著相关,相关系数分别为0.51、-0.58、0.68.月尺度上,干旱、半干旱地区积雪和地表反照率都在1-4月降低,10-12月升高,而地表净辐射、气温和降水量均在1-6月增加,7-12月减少,其他月份均无明显变化.
英文摘要	Based on the data of snow cover, radiation, temperature and precipitation at the Kashi and Urumqi stations in the Xinjiang Uygur Autonomous Region from 1993 to 2012,analyzing the changes of the variables and the relationship between snow cover and albedo, net total radiation, temperature, precipitation on different time scales in arid and semiarid areas. The results showed that in the inter- annual scale the first day of snow cover advanced, the last day of it postponed, the snow days, snow depth and snow index increased, which promoted significant increase in surface albedo and precipitation and the decrease in surface net radiation and temperature in arid area. In the semi-arid area, the first day of snow cover delayed, the last day of it advanced, snow days decreased, the snow depth and snow index increased, causing the significant increase of albedo. The change of snow days distinctly inhibited the temperature rise and the correlation coefficient between them was -0.49. In the seasonal changes, in winter the snow days and snow depth increased especially the snow depth which led to increase in albedo and precipitation and decrease in radiation and temperature in arid area. In semi-arid area, more snow cover and greater albedo and less precipitation and more net radiation due to snow melting earlier which led to faster temperature rise in spring. In autumn, snow cover decreased, but other climatic factors showed a slow increasing trend. The increase of snow in winter caused more precipitation and albedo and smaller net radiation thus resulting in a lower temperature, the change of snow depth was significantly correlated with albedo, net radiation and precipitation, and the correlation coefficients were 0.51,-0.58 and 0.68 respectively. On the monthly scale, the snow cover and albedo decreased from January to April, and increased from October to December, surface net radiation, temperature and precipitation increased from January to June, and decreased from July to December, and they didn't obvious change in rest months.
中文关键词	积雪 ; 地表反照率:地表净辐射 ; 气温 ; 降水量 ; 新疆维吾尔自治区
英文关键词	snow cover albedo net total radiation temperature precipitation Xinjiang Uygur Autonomous Region
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6452301
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378937
作者单位	户元涛, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 张廷军, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	户元涛,张廷军. 干旱、半干旱地区积雪变化及其与气候变化的关系以新疆维吾尔自治区为例[J],2018,54(5):577-585.
APA	户元涛,&张廷军.(2018).干旱、半干旱地区积雪变化及其与气候变化的关系以新疆维吾尔自治区为例.兰州大学学报. 自然科学版,54(5),577-585.
MLA	户元涛,et al."干旱、半干旱地区积雪变化及其与气候变化的关系以新疆维吾尔自治区为例".兰州大学学报. 自然科学版 54.5(2018):577-585.