1966—2019年党河流域冰川变化遥感监测  

Remote sensing monitoring of glacier changes in the Danghe River Basin during 1966-2019

作　　者：李振林 秦翔 刘宇硕 LI Zhenlin;QIN Xiang;LIU Yushuo(Gansu Natural Resources Information Center,Lanzhou 730030,China;Qilian Observation and research Station of Cryosphere and Ecologic Environment/Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730030,China;University of Chinese Academy of Sciences,Lanzhou 730030,China)

机构地区：[1]甘肃省自然资源信息中心,兰州730000 [2]中国科学院西北生态环境资源研究院冰冻圈科学与冻土工程重点实验室,兰州730000 [3]中国科学院大学,北京100101

出　　处：《测绘科学》2024年第10期146-155,共10页Science of Surveying and Mapping

基　　金：甘肃省自然资源厅科技创新项目(202212);甘肃省自然科学基金项目(23JRRA629)。

摘　　要：针对党河流域冰川变化对下游水资源的显著影响,而现有研究缺乏的问题,该文研究使用2次冰川编目数据,结合多源卫星遥感影像,使用人工矢量化方法,对1966—2019年间党河流域冰川开展变化监测,同时以扎子沟29号冰川为例,研究其较为详细的变化过程。显示党河流域内冰川主要分布于祁连山区,阿尔金山冰川占小部分,研究时段内党河流域总体呈现退缩趋势,但扎子沟29号冰川出现2次冰川前进现象。党河流域内共分布冰川341条,总面积为221.69 km^(2),1966—2019年冰川呈现退缩趋势,冰川条数增加5条,冰川总面积减少了38.05 km^(2),相对每年减少0.28%。扎子沟29号冰川末端前进、退缩交替出现与祁连山区冰川普遍处于加速萎缩的趋势不同,其原因值得继续深入研究。In response to the significant impact of glacier changes in the Danghe River Basin on downstream water resources and the lack of existing research,this paper uses two glacier cataloging data,combined with multi-source satellite remote sensing images,and employs artificial vectorization methods to monitor glacier changes in the Danghe River Basin from 1966 to 2019.Taking the Zhazigou No.29 glacier as an example,the detailed change process is studied.The glaciers in the Danghe River Basin are mainly distributed in the Qilian Mountains,with a small proportion in the Altun Mountains.During the research period,the Danghe River Basin showed an overall trend of retreat,but the Zhazigou No.29 Glacier experienced two glacier advances.There are a total of 341 glaciers distributed in the Danghe River Basin,with a total area of 221.69 km^(2).From 1966 to 2019,glaciers showed a trend of retreat,with an increase of 5 glaciers and a decrease of 38.05 km^(2)total glacier area,a relative annual decrease of 0.28%.The advance and retreat of the end of Zhazigou No.29 Glacier are different from the trend of accelerated shrinkage of the glaciers in the Qilian Mountains.The reasons for this are worthy of further study.

关 键 词：祁连山 党河流域 扎子沟29号冰川 遥感 冰川变化 

分 类 号：P237[天文地球—摄影测量与遥感]