QQ客服 官方微博 反馈留言

题名	新疆典型冰川特征变化及其对关键气象因子的响应
作者	黄晓然
答辩日期	2017-05-01
文献子类	硕士
授予单位	中国科学院大学
授予地点	新疆乌鲁木齐
导师	包安明
关键词	冰川变化 博格达峰地区 喀尔力克山地区 音苏盖提地区 友谊峰地区 气象因子响应 Glacier changes Bogda peak area Kelikelku mountain area sound Sugari area Friendship peak area meteorological factor response
学位专业	理学硕士
英文摘要	Glaciers are formed under the influence of climate change and are responsive to climate change. The glacier itself changes can also indirectly reflect the climate change. Glacier is the solid form of water body,storing rich fresh water resources. In the arid and semi-arid areas where water resources are scarce,glaciers are important sources of water resources. Glacier changes have an important impact on the ecological environment and people's production and living in arid areas. The study of glacier change is of great significance to the realization of sustainable development of arid and semi arid areas. With the development of remote sensing technology,it is one of the important means to study glaciers in the glacier areas where the climate is bad, the terrain is steep and the snowstorm is difficult to reach. Xinjiang glaciers are widely distributed,mainly concentrated in the Tianshan Mountains. Tianshan Mountains is one of the most mountainous mountains in the world,and the main distribution types of Tianshan glaciers are radially distributed with high mountain peaks. The Altai Mountains are the highest glaciers in China,and the glaciers in the region are small in size. Karakorum mountain mountains magnificent numerous peaks with large scale glaciers,. Snow line elevation is up to 5000m. The region is the world's low latitude mountain glacier development of the region.In order to be more comprehensive understanding,the response of Xinjiang glaciers to climate change is explored.In this paper,four typical glaciers are selected,which are the glaciers in the Friendship Peak area of the Altai Mountains,the glaciers in the Bogda peak area of the Tianshan Mountains and the glaciers in the Kelikinshan area.Based on Landsat TM,ETM + \ OLI remote sensing image data from 1990 to 2015,the glacier boundary was modified by snow cover index method (NDSI) and threshold method. The glacier catalog data were combined with visual interpretation method. The area of glacier in the area of the Bogda area, the area of glacier of the Kelikelku area,the Friendship Peak area,the sound Sugari area, the glacier slope to the ice and the glacier area center of gravity change was analysed. The climatic responses of typical glaciers in the eastern Tianshan Mountains over the past 20 years were studied by combining the temperature of long time series and the key meteorological factors of precipitation. And the characteristics of glacier changes in four study areas were combined with the changes of the key meteorological factors and the characteristics of the terrain and the glaciers themselves.Through the preliminary study, we get some conclusions: （1）The glaciers in the four study areas have experienced the phenomenon of accelerated retreat and the recent fluctuation in the 1990s. From the area of retreat rate,the friendship rate of the largest area of the retreat rate,followed by the Bogda peak area,and then for the sound Sugar area,and finally for the region of the Kelikelku area. （2）The glacier area in the four study areas shows the phenomenon of migration to the origin,which shows that the study area in each quadrant are showing a trend of retreat,in addition to Friendship peak area,the other three study area 4 quadrant area The center of gravity changes are relatively large. （3）From the perspective of the slope map,the glacier area on the southern slope of the Kelikelku mountain area is larger than the northern slope,and the glacier area on the north slope is larger than the glacier area in the southern slope. Glacier area retreat rate northwest slope up slightly increased,the other areas in all directions are showing a retreat trend in addition to the friendship peak area in the. Both the Bogda peak area and the Kelikelku mountain area have the fastest retraction rate in the northwest slope and the sound Sugari area and the Friendship peak area are the fastest in the east slope. （4）According to the analysis of raster meteorological data,the response sensitivity of the key meteorological factors in the Friendship peak area is greater than that in the Bogda area,which is larger than that of the area of the Kelikelku mountain area and the friendship area.The increase in precipitation in the Bogda peak area has little effect on the retreat of the glaciers,and the precipitation in the Kelikelku mountain area has a certain inhibitory effect on the retreat of the glacier area. （5）On the scale of the year,the main reason for the Bogda peak area,the Kelikelku mountain area,the sound Sugari area and the Friendship peak area are due to the increase of the temperature in the wet and dry season and the precipitation in the wet and dry season are not making the overall retreat of the glaciers slowed down.
语种	中文
学科主题	地图学与地理信息系统
内容类型	学位论文
源URL	[http://ir.xjlas.org/handle/365004/14875]
专题	新疆生态与地理研究所_研究系统_荒漠环境研究室
作者单位	中国科学院新疆生态与地理研究所
推荐引用方式 GB/T 7714	黄晓然. 新疆典型冰川特征变化及其对关键气象因子的响应[D]. 新疆乌鲁木齐. 中国科学院大学. 2017.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。