青藏高原近30年来现代冰川面积的遥感调查  

Remote Sensing Survey of Existing Glaciers in Qinghai-Tibet Plateau

作　　者：张瑞江[1] 方洪宾[1] 赵福岳[1] 曾福年[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《国土资源遥感》2010年第B11期45-48,共4页Remote Sensing for Land & Resources

基　　金：中国地质调查局地质调查项目"青藏高原生态地质环境遥感调查与监测"(编号:1212010510218)

摘　　要：以1960～1970年间1：10万比例尺地形图、1975年MSS数据和2000年前后ETM数据为信息源，采用现代遥感技术，按自然山系对青藏高原现代冰川面积进行调查，基本查明了各山系内现有冰川的面积以及近30a来冰川面积减少的数量：青藏高原现有冰川面积46887．23km^2，减少了3941．68km^2，年均减少131．4km^2。An investigation of existing glaciers in Qinghai - Tibet Plateau based on remote sensing technology has revealed the areas of existing glaciers in different ridges. The decreased area of existing glaciers in Qinghai - Tibet Plateau from the middle of the 1960＇ s nearly to the 2000＇ s was also found out. Different kinds of remote sensing data suitable for the investigation were chosen according to the characteristics of glaciers distribution. Terrain correction of the remote sensing data is necessary to reduce the influence of topography on the investigation precision. Much seasonal snow existent on the high mountains must be eliminated. It is difficult to eliminate seasonal snow in most areas because it is so similar to the existing glacier. Many ways are summarized to eliminate the seasonal snow. Till the year of 2000, the area of existing glacier in Qinghai - Tibet Plateau was 46 887.23 km^2, suggesting a shrinkage of nearly 3 941.68 km^2. About 131.4 km^2 of existing glaciers was reduced per year from the middle of 1960＇ s approximately to the 2000＇ s in Qinghai - Tibetan Plateau.

关 键 词：现代冰川 遥感调查 青藏高原 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]