干旱区生态环境知识资源中心(Arid): 中亚阿拉套地区冰川退缩与气候变化关系研究

Arid

	中亚阿拉套地区冰川退缩与气候变化关系研究
其他题名	Glacier shrinkage and its dependence on climate in the Central Asia Alatau Region
	何毅; 杨太保; 冀琴; 陈杰
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2014
卷号	37 期号:5 页码:908-915
中文摘要	以1990-2011年的TM和ETM+遥感资料为信息源，通过遥感图像处理技术和目视解译方法提取冰川界限，应用GIS技术分析了阿拉套地区近22 _a冰川面积变化。结果表明：1990-2011年阿拉套地区冰川呈退缩趋势，面积退缩了20.24%，大规模冰川分解使得小规模冰川的总面积和条数均有所增加，较大的变化率是由于研究区面积<1 km~2的冰川数量占总数的比重较大(近90%)造成的，依据研究区冰川空间结构特征，应用分形理论对未来冰川变化进行初步预测，认为研究区冰川的消融率仍保持比较高的状态。表明阿拉套地区冰川退缩的关键因素是气候变暖，年降水量的增加不能抵消由夏季温度剧烈上升导致的冰川消融。此外，地形条件、冰川规模都是影响冰川波动的重要因素，与西部其他区域相比，阿拉套地区冰川退缩表现出较快的趋势。
英文摘要	Mountain glaciers are important fresh water resources in the arid region and they are also one of potential climate indicators because of their sensibility to climate changes. It is estimated that 82.2% of glaciers in western China have been in a state of retreat,which the glacial area decreased by 4.5% in recent 50 years. Under this background ,we can not only understand the characteristics and trends of glacier change,but also understand the relationship of glacier response to climate change,and thus likely to predict future changes in glacier. Researches on glacier change have been limited in Chinese Tianshan Mountains, despite the fact that the number of glaciers in the Tianshan Mountains is the largest among all mountain ranges in China,and the glaciers in this region provide very important water resources for local economic development and drinking water for man use. The Alatau Mountains belong to Tianshan Mountain System. Most of the researches on glaciers were sited in Tianshan Mountains but not in Alatau Mountains. Therefore,the glaciers of Alatau Mountains were selected as the study area in this paper. TM and ETM+ Landsat data from 1990 to 2011 were used to map the glacier extents by applying remote sensing image processing and visual interpretation. The details of glaciers change during the last 22 years in the Alatau regions were obtained by using GIS. Meanwhile,the meteorological data were analyzed in the paper. The results showed that the Alatau area glaciers experienced a general shrinkage, the total glacier area in the study area decreased by 20.24% from 1990-2011. Massive glaciers decomposition caused small-scale glaciers increase in total areas and numbers. The paper analyzed the reason of large change rate of glaciers,and the results indicated that the large change rate of glaciers is caused by the big proportion of small glaciers,which glaciers smaller than 1 km~2 for nearly 90% in total glaciers. At the same time,the distribution characteristics of spatial structure for the glaciers were analyzed. Based on the fractal theory,it shows that the melting rate of glaciers in the study area will remain high because of the climate warming, which is mainly caused by the area and length changes of these glaciers. By analyzing the climate records (annual mean temperature, summer mean temperature and annual precipitation) and glacier variation in the research area,it was stated that glacier changes were a response to summer temperature increase. Annual precipitation also showed an upward trend,but it had not compensated the mass loss due to ablation. Besides,topographic condition and the scale of glacier were key factors for glacier changes as well. Compared with other western regions,the Alatau region glaciers retreat exhibited rapid trend.
中文关键词	阿拉套地区 ; 冰川退缩 ; 气候变化
英文关键词	GIS RS Alatau region glacier shrinkage climate change GIS RS
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5273342
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231133
作者单位	兰州大学资源环境学院冰川与生态地理研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	何毅,杨太保,冀琴,等. 中亚阿拉套地区冰川退缩与气候变化关系研究[J]. 兰州大学,2014,37(5):908-915.
APA	何毅,杨太保,冀琴,&陈杰.(2014).中亚阿拉套地区冰川退缩与气候变化关系研究.干旱区地理,37(5),908-915.
MLA	何毅,et al."中亚阿拉套地区冰川退缩与气候变化关系研究".干旱区地理 37.5(2014):908-915.