1980-2015年岗日嘎布地区冰川分布数据集

A dataset of glacier distribution and glacier changes in the Kangri Karpo Mountains during 1980-2015

岗日嘎布地区位于青藏高原东南部,北西–南东走向,毗邻波密、墨脱、察隅、八宿,空间范围分布在29°00′N–29°30′N、96°20′E–97°00′E内。该地区冰川属海洋型冰川,其面积变化对当地及区域水资源有重要影响。本数据集在综合中国科学院寒区旱区环境与工程研究所的我国第一次冰川编目数据、1980年地形图、航空摄影相片和2001、2002及2015年Landsat遥感影像等相关数据的基础上,借助ArcGIS、ENVI等软件,对数据进行波段组合、研究区裁剪、人工目视解译与波段比值提取冰川边界等,并对解译的数据进行精度验证。数据集内包含两个文件:1)定义研究区范围的矢量文件;2)基于地形图、航空摄影相片和Landsat遥感影像获取的1980、2001、2015年冰川目录矢量文件。本数据集反映了1980–2015年岗日嘎布地区冰川边界变化情况,可作为藏东南地区冰川变化、气候变化等研究的基础数据。

Located in southeastern Tibetan Plateau,the Kangri Karpo Mountains extents about 280 km from northwest to south-east,south of BomêCounty and neighboring Motuo,Zayüand Basu counties.It has a geographic extent of 29°00′N–29°30′N,96°20′E–97°00′E.The Kangri Karpo Mountains is one of the most important and concentrated regions of maritime(temperate)glacier development.Its glacier area changes have important impact on local and regional water resources.This Kangri Karpo glacier dataset(1980–2015)was developed by integrating several data sources:the Glacier Inventory Dataset produced in the 1980s by the Cold and Arid Regions Environmental and Engineering Research Institute of Chinese Academy of Sciences,the topographic maps and aerial photographs in 1980 and Landsat images in 2001,2002 and 2015.ArcGIS and ENVI softwares were used to combine bands,do data design and perform manual visual interpretation and band ratio segmentation.Two data subsets are presented here:①geographic extent of the study region in shapefile format,and②glacier outlines in shapefile format.The dataset reflects the glaciers’changing boundaries during 1980–2015,and can be used for research on the glacier and climate changes over southeastern Tibetan Plateau.