Glacier change in the western Nyainqentanglha Range,Tibetan Plateau using historical maps and Landsat imagery:1970-2014  

作　　者：WU Kun-peng LIU Shi-yin GUO Wan-qin WEI Jun-feng XU Jun-li BAO Wei-jia YAO Xiao-jun 

机构地区：[1]State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Science,Lanzhou 730000,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Mountain Science》2016年第8期1358-1374,共17页山地科学学报（英文）

基　　金：supported by the fundamental program from the Ministry of Science and Technology of China(MOST)(Grant No.2013FY111400);the National Natural Science Foundation of China(Grant No.41190084);the MOST Technology Oriented Project(Grant No.2012BAC19B07);The second Chinese Glacier Inventory was a product of the previous MOST Project(Grant No.2006FY110200)

摘　　要：Glaciers in the western Nyainqentanglha Range are an important source of water for social and economic development. Changes in their area were derived from two Chinese glacier inventories; one from the 197o 1：5o,ooo scale Chinese Topographic Maps series and the other from Landsat TM/ETM＋ images acquired in 2009. Analyses also included boundaries from 2000 and 2014 Landsat TM/ETM＋ images. A continuing and accelerating shrinkage of glaciers occurred here from 1970 to 2014, with glacier area decreasing by 244.38±29.48 km^2 （27.4%±3.3%） or 0.62%±0.08% a^-1. While this is consistent with a changing climate, local topographic parameters, such as altitude, slope, aspect and debris cover, are also important influences. Recession is manifested by a rise in the elevation of the glacier terminus. The shrinkage of glaciers with NE, N and NW orientations exceeded that of other aspects, and glaciers with SE and S orientations experienced less shrinkage. Changes in the average positive difference of glaciation （PDG） show that the western Nyainqentanglha Range has unfavorable conditions for glacier maintenance which is being exacerbated by a warming climate since 1970.

关 键 词：Glacier change Glacier inventory Western Nyainqentanglha Range Remote sensing 

分 类 号：P343.6[天文地球—水文科学] P237[天文地球—地球物理学]