干旱区生态环境知识资源中心(Arid): 西北干旱区山区融雪期气候变化对径流量的影响

Arid

	西北干旱区山区融雪期气候变化对径流量的影响
其他题名	The Effect of Climate Change during Snowmelt Period on Streamflow in the Mountainous Areas of Northwest China
	李宝富; 陈亚宁; 陈忠升; 李卫红
来源期刊	地理学报
ISSN	0375-5444
出版年	2012
卷号	67 期号:11 页码:1461-1470
中文摘要	利用8个山区气象站1960-2010年日平均气温、降水和7个出山口水文站的年径流数据(1960-2008),统计分析了山区融雪期开始时间、结束时间、天数、温度和降水的变化趋势及其空间差异性,并定量评估了年径流量对融雪期温度和降水变化的敏感性。结果表明,近50年来,山区融雪期平均提前了15.33天,延迟了9.19天;其中,天山南部山区融雪期提前时间最长,为20.01天,而延迟时间最短,仅6.81天;祁连山北部山区融雪期提前时间最短(10.16天),而延迟时间最长(10.48天)。这显示山区融雪期提前时间越长,延迟时间则越短。山区融雪期平均降水量增加了47.3mm,平均温度升高了0.857℃;其中天山南部山区降水增量最大,达65mm,昆仑山北部山区降水和温度增量均最小,分别为25 mm和0.617℃,而祁连山北部山区温度增量最高(1.05℃)。河流径流量对融雪期气候变化敏感,降水变化诱发年径流量变化了7.69%,温度变化使得年径流量改变了14.15%。
英文摘要	This paper, using daily mean temperature and precipitation from 8 mountainous weather stations over the period 1960-2010 in the arid region of Northwest China, analyzes snowmelt period tendency and its spatial variations and explores the sensitivity of runoff to length, temperature and precipitation of snowmelt period. The results show that mean onset of snowmelt period has a shift of 15.33 days earlier while mean ending date has moved 9.19 days later. Onset of snowmelt period in southern Tianshan Mountains moved 20.01 days earlier while that in northern Qilian Mountains moved only 10.16 days earlier. Mean precipitation and air temperature increases by 47.3 mm and 0.857℃ in the mountainous areas of Northwest China, respectively. The precipitation of snowmelt period with the largest increase was observed in southern Tianshan Mountains, reaching 65mm, the precipitation and temperature in the northern Kunlun Mountains with the smallest increment increased by 25mm and 0.617 ℃, respectively, while the temperature in northern Qilian Mountains rose the highest, an increase of 1.05 ℃. The annual streamflow is also sensitive to the variations of precipitation and temperature of snowmelt period, because variation of snowmelt period precipitation induce annual streamflow to change by 7.69% while change of snowmelt period temperature results in annual streamflow change by 14.15%.
中文关键词	融雪期 ; 温度 ; 降水 ; 径流 ; 西北干旱区
英文关键词	snowmelt period temperature precipitation streamflow the mountainous areas of Northwest China
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4696416
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227865
作者单位	中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	李宝富,陈亚宁,陈忠升,等. 西北干旱区山区融雪期气候变化对径流量的影响[J]. 中国科学院新疆生态与地理研究所,2012,67(11):1461-1470.
APA	李宝富,陈亚宁,陈忠升,&李卫红.(2012).西北干旱区山区融雪期气候变化对径流量的影响.地理学报,67(11),1461-1470.
MLA	李宝富,et al."西北干旱区山区融雪期气候变化对径流量的影响".地理学报 67.11(2012):1461-1470.