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中国南天山的高山冰川,与以干热著称的塔里木盆地紧邻共存,形成自然景观的鲜明对比,引起人们的深思——它们之间有没有内在联系? 有一种看法认为,由于塔里木盆地的主体是塔克拉玛干大沙漠,气候干热,又是青藏高原北缘的下沉气流区,北来气团的背风坡,降水少,因此不利于冰川发育。 如果上述看法成立,则南天山的冰川规模一定很小。事实正相反,例如,我们选用 相似文献
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祁连山区现代冰川发育条件、分布特征及区划——据最新冰川编目资料分析 总被引:2,自引:0,他引:2
祁连山区(包括阿尔金山东端),位于青藏高原的东北沿,跨越青海、甘肃两省之间,为河西和柴达木两内陆水系的发源地,是我国冰川研究最早的地区。1979—1980年,兰州冰川冻土研究所使用国际冰川目录编纂规范,再次对本区进行了比较详细的冰川编 相似文献
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THE LITTLE ICE AGE OF THE NORTHWEST REGION,CHINA 总被引:1,自引:0,他引:1
王宗太 《中国地理科学(英文版)》1992,2(3):215-225
The Little Ice Age began in the early 15 the century and ended in 16 the century in the northwest region of China. In the Northern Hemisphere, the age of the Little Ice Age postponed form north to south, form west to east, and moist region to drought. Judged by the data the Little Ice Age of the Northwest China is later than the eastern China and Europe. The climate of the Little Ice Age in northwest China was cold-wet. In northwest China, as compared with the Little Ice Age, the recently annual temperature have raised about 1-1.3℃, the precipitation have reduced 50-78 mm, the evaporation have increased 7%, the glacier area have reduced about 21-46%, and the runoff have reduced about 14% in the river which the meltwater supply proportion is less than 10%. To sum up, since the Little Ice Age the warm-dry tendency of climatic variation is quite obviously in northwest China. If it goes on like this, its influence will be more severe to the river which meltwater proportion is more than 50%. 相似文献