干旱区生态环境知识资源中心(Arid): 近50年来内蒙古查干淖尔湖水量变化及其成因分析

Arid

	近50年来内蒙古查干淖尔湖水量变化及其成因分析
其他题名	Variation and causation of Lake Qehan, Inner Mongolia over the recent 50 years
	刘美萍 1; 哈斯 1; 春喜 2
来源期刊	湖泊科学
ISSN	1003-5427
出版年	2015
卷号	27 期号:1 页码:141-149
中文摘要	内蒙古查干淖尔湖是位于季风边缘区干旱与半干旱过渡带的封闭湖泊,对气候变化响应极为敏感.利用19582010年的查干淖尔湖21期遥感影像以及湖泊流域19552010年的3个气象站点和1个水文站点的气温、降水、蒸发和径流等数据,分析查干淖尔湖近50余年的湖泊水量、面积/水位波动及其原因.结果表明,近50年来在区域气候暖干化的背景下,查干淖尔湖不断萎缩,流域生态环境退化.19582010年湖泊容积以210~6 m~3/a的速度锐减66.9%(从124.110~6 m~3降到41.1*10~6 m~3),湖泊面积缩小73.3%(从105.3 km~2降到28.1 km~2),平均缩减速度为1.8 km~2/a;流域年均气温上升了2.5℃,年降水量下降了36.6 mm.湖泊水量与流域气温和蒸发量显著负相关.查干淖尔湖分为东西两部分,中间由天然堤坝相连,东湖在水闸的人为控制下水位波动范围不超过1 m.西湖水位波动则相对剧烈,湖面下降7.6 m,于2002年彻底干涸,湖盆裸露,已成为盐尘暴、沙尘暴源地.
英文摘要	Lake Qehan, an inland closed lake located in the arid and semi-arid area and the marginal belt of southeast monsoon in Inner Mongolia, is very sensitive to climatic change,but little work has been conducted in this lake. This study aimed to investigate the lake volume, area and level variation and identify the causes for the lake fluctuation during the past 50 years, based on 19 MSS/TM/ETM+ images and two aerial photographs from 1958 to 2010 and the meteorological and hydrological data of three representative meteorological stations and one hydrological station around the lake basin from 1955 to 2010. The results showed that Lake Qehan has experienced severe shrink and environmental depravation over the recent 50 years, and human activities was not the main factors of lake shrunk,but the increasingly warm and dry climate was the principal cause of the reduced lake area and volume. The mean annual temperature increased 2.5℃ and the annual precipitation declined about 36.6 mm during 19552010. While the lake volume decreased 66.9% (from 124.110~6 m~3 to 41.110~6 m~3), by an average reduction rate of 2*10~6 m~3/a, the lake area reduced from 105.3 km~2 in 1958 to 28.1 km~2 in 2010 by an average reduction rate of 1.8 km~2/a. The variation of lake volume was highly negatively correlated to temperature and evaporation, the correlation coefficients were-0.689 and-0.546,respectively. Lake Qehan has two parts, the west one and the east one, there was a significant lake-level decline in west lake by 7.6 m(from 1016.6 m to 1009 m a.s.l.), and it has dried up in 2002, and exposed extensive expanses of former lakebed and has created salty surface, which lead to saline dust storms.The ecological environment of the study area was getting much worse then. While under the control of the water gate, there was a relatively slight lake-level fluctuation in the east lake, just about 1 m.
中文关键词	查干淖尔湖 ; 湖泊波动 ; 气候变化 ; 人类活动
英文关键词	Lake Qehan lake variation climate change human activities
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MULTIDISCIPLINARY SCIENCES
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5376671
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232893
作者单位	1.北京师范大学资源学院, 北京 100875, 中国; 2.内蒙古师范大学地理科学学院, 蒙古高原环境与全球变化实验室, 呼和浩特, 内蒙古 010022, 中国
推荐引用方式 GB/T 7714	刘美萍,哈斯,春喜. 近50年来内蒙古查干淖尔湖水量变化及其成因分析[J]. 北京师范大学,2015,27(1):141-149.
APA	刘美萍,哈斯,&春喜.(2015).近50年来内蒙古查干淖尔湖水量变化及其成因分析.湖泊科学,27(1),141-149.
MLA	刘美萍,et al."近50年来内蒙古查干淖尔湖水量变化及其成因分析".湖泊科学 27.1(2015):141-149.