摘要
根据遥感资料解译分析,结合现场实地核查成果,统计分析研究表明,1976~2013年间念青唐古拉山东段的冰湖数量、冰湖面积及冰湖蓄水量总体上均呈上升趋势,但其增长速度表现出时段差异性的典型特征,1976~1988年间增幅最大,1988~2001年间增幅呈现减缓趋势,2001~2013年间增幅又再次出现加速的趋势。从冰湖的具体演变看,有三个变化特点,一种是面积比较小,后续冰舌补给少的冰湖,随着时间的变化,冰湖消失;一种是原始的多个小冰湖扩大合并成一个较大的冰湖;其三,在冰舌周围形成新的湖泊并发展。
According to analysis of remote sensing data interpreted,combining with results of on-site field verification,statistical analysis showed that the number,plane area and water storage of glacier lakes at the eastern region of Nyainqêntanglha mountain in Tibet between 1976 to 2013 appeared an upward trend overall,but its growth rate illustrated the typical characteristics of time differences. Between 1976 to 1988,increase rate is the largest;between 1988 and 2001,growth trends showed slowing; the increase trend became accelerated between 2001 and2013 again. In the specific evolution of glacier lake,there are three changing characteristics: first,their area is relatively small,subsequent replenishment tongue supplied little glacier lake,glacier lakes disappeared over time;second,some original small glacier lakes were merged into a large glacier lake; Third,some new a glacier lake formed and developed around the glacier tongue.
出处
《科学技术与工程》
北大核心
2014年第25期165-168,共4页
Science Technology and Engineering
关键词
西藏念青唐古拉山
冰湖
演变特征
Nyainqêntanglha mountain in Tibet glacier lake evolution characteristics
